[User]
I'd like to design a threaded container with a cap and a nut, all in OpenSCAD. The main body of the container will have internal threads at the top and bottom, with a smooth cylindrical cavity in between. I want the inside length (the usable space) to be customizable, so I can store different items. The cap should have external threads matching the body's top threads, and the nut should have external threads matching the body's bottom threads. The cap should also have a flat top and a short chamfered edge. The nut should also have chamfered edges.

Here are some more details:

*   **Body:**
    *   The body should be a cylinder with an inner diameter of 19.8mm.
    *   It should have internal threads at the top that start 17.9mm from the top, for a length of 10.1mm. These threads should be right handed.
	* The body should have internal threads at the bottom that start 8.1mm from the bottom, for a length of 10.1mm. These threads should be left handed.
    *   The overall height of the smooth cylindrical portion of the body will be a customizable parameter, inside_height, which should have a range of 38mm to 152mm.
    *  There should be four small fins that form vertical channels along the outer top and outer bottom to help twist the body. These should be 1.5mm in radius. There should be four small fins on the top of the body and four small fins on the bottom of the body.
    * There should be four small chamfered edges at the top of the body to make it easier to thread on the cap.

*   **Cap:**
    *   The cap should have external left-hand threads matching the top of the container body. The cap thread should start 4 mm from the base of the cap and run for 11.1mm.
    *   The cap should be a cylinder with a diameter of 44mm and a height of 15mm.
    * It should have four small vertical fins that form channels to improve grip. These should be 22mm in radius.
    * It should have a cylindrical chamfered edge to guide it onto the top of the body, from 10 to 13.5mm radius. This will start 11.6mm from the base of the cap and have a height of 3.5mm.
    *  I want a space on top of the cap that will allow a text message to be printed on it, but I don't need the message to be added. I just need the space.
	* There should be a chamfered edge at the base of the cap, which starts from the edge of the threads and has a radius increase of 22mm.

*   **Nut:**
    *   The nut should have external right-hand threads matching the bottom of the container body. The nut thread should start from the base of the nut and run for 17.2 mm.
    *   The nut should be a cylinder with a diameter of 44mm and a height of 17mm.
	* It should have four small vertical fins that form channels to improve grip. These should be 22mm in radius.
	* It should have two cylindrical chamfered edges. The first will guide it onto the bottom of the body, from 10mm to 13.5mm, and start 13.6mm from the base, running for 3.5mm. The second will begin at the base of the nut and run from 13.5mm to 10mm radius, for a height of 3.5mm.
	* There should be a chamfered edge at the base of the nut, which starts from the edge of the threads and has a radius increase of 22mm.

*   **Threads:**
    *   All threads should have a diameter of 25.4mm, a thread diameter reduction of 1.5mm.
    *   The thread pitch should be 25.4/8. This is the ratio of thread diameter to threads per inch.

I think that covers all of the features I'm looking for. Could you generate the OpenSCAD code for me?

[Assistant]
bolt_container.scad:
```
inside_height=58;//[38:152]

body(inside_height);
cap("");
nut();

module thread(dia,td,tp,ht){
linear_extrude(height=ht,twist=ht/tp*-360)
translate([td/2,0])
circle(d=dia-td,$fn=60);
}

module body(ih){
$fn=50;

translate([38,0,0])
difference(){
union(){
thread(25.4,1.5,25.4/8,ih-17.9);

translate([0,0,ih-18])
cylinder(d=25.4,h=10);

translate([0,0,ih-8.1])
thread(25.4,1.5,25.4/-8,10.1);
}

translate([0,0,2])
cylinder(d=19.8,h=ih+0.1);

for(i=[0,ih+2])
translate([0,0,i])
rotate_extrude()
translate([25.4/2,0])
circle(r=1.5,$fn=4);

translate([0,0,ih+2])
rotate_extrude()
translate([19.4/2,0])
circle(r=0.6,$fn=4);
}
}

module cap(txt){
$fn=50;
difference(){
cylinder(r=22,h=15,$fn=6);

dd=22-(cos(30)*22);

rotate_extrude()
translate([22,0])
circle(r=dd+0.2,$fn=4);

translate([0,0,4])
thread(26,1.5,25.4/-8,11.1);

translate([0,0,11.6])
cylinder(r1=10,r2=13.5,h=3.5);

translate([0,0,-0.1])
linear_extrude(height=0.5)
mirror([1,0,0])
text(str(txt),size=13,valign="center",halign="center",font="Arial:style=Bold");
}
}
module nut(){
$fn=50;
translate([0,41,0])
difference(){
cylinder(r=22,h=17,$fn=6);

dd=22-(cos(30)*22);

for(k=[0,17])
translate([0,0,k])
rotate_extrude()
translate([22,0])
circle(r=dd+0.2,$fn=4);

translate([0,0,-0.1])
thread(26.1,1.5,25.4/8,17.2);

translate([0,0,13.6])
cylinder(r1=10,r2=13.5,h=3.5);

translate([0,0,-0.1])
cylinder(r1=13.5,r2=10,h=3.5);
}
}

```


[User]
Okay, I'm looking to design a desk hook based on a Fibonacci spiral, similar to the one I found on Thingiverse but I want it to be fully customizable. I need it to be parametric in OpenSCAD and would like to control these aspects:

*   **Desk Thickness:** This is the maximum thickness of the desk the hook will attach to.
*   **Hook Thickness:** This is the thickness of the hook itself. I want to make sure that this is not less than 1/9 of the desk thickness, to avoid issues.
*   **Chamfer Ratio:** This parameter would control the size of the chamfer on the hook edges. It would be a ratio of the hook thickness to the chamfer size, so a higher value results in a smaller chamfer.
*   **Facet Number ($fn):** This should control the detail of the curved surfaces. A higher number makes them smoother, but takes longer to render. I want this to be adjustable, and defaults to a high value to get smooth curves.

The design should have the basic structure like the Fibonacci hook in the included description where it is based on two circles and a hanging portion. One of the circles is rotated in a way to create a spiral shape and there needs to be some fillets at the corners. The model should also include a small filler piece to fill the hole in the spiral center. The design should also create a test desk cube, just like in the code, so that I can get a sense of scale when looking at the model.

I don't need any additional libraries. All of the features described above can be done using the base OpenSCAD feature set. Can you please generate the OpenSCAD code for this?

[Assistant]
Fibonacci_Hook4.scad:
```
//FIBONACCI HOOK

//Parameters

//Maximum Desk Thickness
desk=20;

//Hook Thickness (ideally half of desk thickness, not under 1/9 of desk thickness)
thick=10;

//Chamfer ratio (ratio Hook thickness:chamfer size, higher value -> smaller chamfer)
chamferratio=10; // [4:100]

 //Facet Number (detail of curves, at least 500 for smooth surfaces)
$fn=500; // [25:(2*radius+20)]

//DO NOT TOUCH!!! (unless you know what  you're doing ;-))
 module __Customizer_Limit__ () {}
    shown_by_customizer = false;

//Some helpful variables

//Chamfer size
 chamfer=thick/chamferratio;

//Radius
radius=sqrt(2)*(desk/2+thick/2);

//Profile
profile=[[thick/2,thick/2-chamfer], [thick/2,-(thick/2-chamfer)], [(thick/2-chamfer),-thick/2], [-(thick/2-chamfer), -thick/2], [-thick/2, -(thick/2-chamfer)], [-thick/2, thick/2-chamfer], [-(thick/2-chamfer), thick/2], [thick/2-chamfer, thick/2] ];

//Profile/2
profile2=[[thick/2,thick/2-chamfer], [thick/2,-(thick/2-chamfer)], [(thick/2-chamfer),-thick/2], [0, -thick/2], [0, thick/2], [thick/2-chamfer, thick/2] ];

//ProfileFillet
profilefil=[[thick/2,thick/2-chamfer], [thick/2,-(thick/2-chamfer)], [(thick/2+chamfer),-thick/2], [1.5*thick-chamfer, -(thick/2)], [1.5*thick-chamfer, thick/2], [thick/2+chamfer, thick/2] ];

//Filler
filler=[[0,0], [0,-thick], [-thick*0.75,0]];

//MODELING STARTS HERE

union(){
//1+1
intersection(){
//first circle
rotate_extrude()translate([radius, 0, 0])polygon(profile);
//Cutting tool (because Thingiverse does not support partial rotate extrude)
translate([-(2*radius+20),0,-(2*radius+20)]) cube([(4*radius+20),(2*radius+20),(4*radius+20)]);
}

//2
difference(){
//second circle
translate([-radius, 0, 0])rotate_extrude()translate([radius*2, 0, 0])polygon(profile);
//cutting tool
translate([-radius,0,-(2*radius+20)])linear_extrude(height=(4*radius+20)){polygon([[0,0], [0,-(2*radius+20)], [-(2*radius+20),-(2*radius+20)], [-(2*radius+20),(2*radius+20)], [(2*radius+20),(2*radius+20)], [(2*radius+20),0]]);}
}

//Round End Part Beginning
translate([-radius,0,0])rotate_extrude() polygon(profile2);

//Round End Part End
translate([-radius,-2*radius,0]) rotate([0,0,90]) rotate_extrude() polygon(profile2);

//Hanger
rotate([-90,0,0]) translate([radius,0,0]) linear_extrude(height=radius+desk) polygon(profile);

//Round End Part Hanger
translate([radius,radius+desk,0]) rotate_extrude() polygon(profile2);

//Fillet

translate([radius-thick,sqrt((radius+thick)*(radius+thick)-(radius-thick)*(radius-thick)),0])
difference(){
rotate_extrude() polygon(profilefil);
translate([0,0,-(2*radius+20)]) union(){
cube([(2*radius+20),(2*radius+20),(4*radius+20)]);
rotate([0,0,-(asin((radius-thick)/(radius+thick))+180)]) cube([(2*radius+20),(2*radius+20),(4*radius+20)]);
rotate([0,0,90]) cube([(2*radius+20),(2*radius+20),(4*radius+20)]);
}
}

//Filler (for the hole in the middle)

translate([radius-thick/2+chamfer,sqrt((radius+thick)*(radius+thick)-(radius-thick)*(radius-thick))-thick,-thick/2 ])linear_extrude(thick)polygon(filler);
}

//Test desk
//rotate([0,0,45]) translate([-1000, -desk/2]) cube([1000,desk, 50]);
```


[User]
I'd like to design a parametric pocket-sized dice tower with a lid for storage, similar to the one I saw on Thingiverse (thing:4571920). It needs to be fully parametric so I can adjust it for different dice sizes and printing tolerances.

Specifically, I want to be able to control the following:

*   **Dice Diameter:** I need to be able to specify the maximum diameter of the dice it should hold. Let's say this is `die_diameter`
*   **Wall Thickness:** The thickness of the material used for the walls of both the tower and lid. I'll call this `wall_thickness`.
*   **Storage Height:** An optional extra height on top of the tower for extra storage. Variable named `toprim`, and will default to 0.
*   **Lid Lip Depth:** How far down the lip of the lid extends. Variable `lid_lipDepth`.
*   **Air Gap:** The tolerance space between the lid and the tower, named `airgap`.
*   **Lid Overhang:** The amount the lid slightly overlaps the tower for a snap-fit, called `lid_overhang`.
*   **Bumper Slope:** The angle of the interior bumpers that direct the dice down. Variable `bumper_slope`.
*   **Number of Bumpers:**  I'd like to control the total number of those bumpers. Variable `bumperCount`.
*   **Which Piece to Generate:**  A variable called `piece` that can be set to "both", "tower", "lid", "demo-tower", or "demo-storage".

The tower should have a series of angled internal bumpers to tumble the dice, and then an exit. The lid should snap onto the tower for storage. I'd like "both" to generate two side-by-side models.  "demo-tower" should generate the tower with the lid partially covering it like it was being put on. And "demo-storage" should show the tower and lid stacked like it's stored.

Please use `eps=0.007` for offset to produce clean cuts when surfaces would overlap and `$fn=32` for smoothness. Use `bumper_length = die_diameter*1`. The overall height of the tower will be calculated from the number of bumpers, slope, and die_diameter so don't give me a setting for overall height.

I don't have any particular preferences on library usage - just whatever makes the most sense to create the design parametrically. I want the final result to be a single parametric model I can adjust.  Please provide me with the complete OpenSCAD code or files that accomplish this.

[Assistant]
Pocket_Dice_Tower_v07.scad:
```
/////////////////////////////////////////////
// Parameters
/////////////////////////////////////////////

/* [General settings (mm)] */
// Which pices to generate
piece = "both"; //[both, tower, lid, demo-tower, demo-storage]
// Max diameter of dice you will use (25 handles most 'normal' dice)
die_diameter = 25;
// Thickness of all exterior surfaces
wall_thickness = 1;
//Add extra mm to the top of the model for more storage. 0 adds none
toprim = 0;
//How far up the lip of the lid goes. Suggested: no more than 1/2 of die_diameter
lid_lipDepth = 10;

/* [Printing tolerance settings (inmm)] */
//The amount of extra space to keep between lid and body
airgap = 0.05; //[0.025:0.025:0.25]
//Lid's little bit of overhang to hold the case close
lid_overhang = 3;

module endParam(){} endParam();

/////////////////////////////////////////////
// Hard-coded parameters
/////////////////////////////////////////////

//offset to produce clean cuts when surfaces would overlap
eps=0.007;
//# of sides for round edges. Of which there are none in this model
$fn=32;

// How far out the bumpers poke out
bumper_length = die_diameter*1;
// The slope of the bumpers.
// Changing this can cause the path for dice to become to narrow
bumper_slope = 60;

//Total bouncers used to tumble the die
bumperCount = 3;

//Stats for interior and exterior measurements of tower
interior_length = die_diameter + bumper_length;
interior_width = die_diameter;
// Dynamic height based off how the die channel spacing works out
boxHeight = bumperCount * (interior_length * tan(90-bumper_slope));
interior_depth = boxHeight+eps;
overall_length = interior_length + wall_thickness*2;
overall_width = interior_width + wall_thickness*2;
overall_depth = boxHeight + toprim;
overall_depth_withBottom = overall_depth + wall_thickness;

//Stats for the interior and exterior of the lid
lid_interiorLength = overall_length + airgap*2;
lid_interiorWidth = overall_width + airgap*2;
lid_interiorDepth = overall_depth_withBottom + airgap*2;
lid_overallLength = lid_interiorLength + wall_thickness*2;
lid_overallWidth = lid_interiorWidth + wall_thickness*2;
lid_overallDepth = lid_interiorDepth + wall_thickness*2;

//Vertical offset for each bumper (z axis)
bumper_layerOffset = interior_length * tan(90-bumper_slope);

/////////////////////////////////////////////
// Logic - Determine what to assemble and assemble it
/////////////////////////////////////////////

if (piece=="both"){
    distanceBetween = 5;
    translate([0,lid_overallWidth/2+distanceBetween/2,0])
        create_tower();
    translate([0,-lid_overallWidth/2-distanceBetween/2,0])
        create_lid();
}

else if (piece=="tower"){
    create_tower();
}

else if (piece=="lid"){
    create_lid();
}

else if (piece=="demo-tower"){
    translate([-lid_interiorDepth/2+lid_overhang+overall_length/2,0,0])
        rotate([0,0,180])
        create_lid();
    translate([0,0,wall_thickness+airgap])
        create_tower();
}

else if (piece=="demo-storage"){
    translate([0,0,lid_overallDepth/2])
        rotate([0,90,0])
        translate([0,0,-lid_overallLength/2])
        create_lid();
    translate([0,0,wall_thickness+airgap])
        create_tower();
}

else {echo("Oops, your piece selection was invalid!");}

/////////////////////////////////////////////
// Create - make a singular model object
/////////////////////////////////////////////

//Create the tower itself
module create_tower(){
    translate([0,0,wall_thickness]){
        part_box();
        part_bumpers();
    }
}

//Create the lid
module create_lid(){
    translate([lid_overallDepth/2,0,lid_overallLength/2])
    part_lid();
}

/////////////////////////////////////////////
// Parts - elements that combine to make up 1 of the printable objects
/////////////////////////////////////////////

// Create the outter shell for the box
module part_box(){
    difference(){
        linear_extrude(overall_depth)
            square([overall_length,overall_width], center=true);
        translate([0,0,-eps/2])
            linear_extrude(interior_depth)
            square([interior_length,interior_width], center=true);
        part_exitVoid();
    }
    part_bottomLayer();
    part_toprim();
}

//Create path piece for dice to exit (used for difference)
module part_dieVoid() {

    translate([-die_diameter/2*cos(bumper_slope)-interior_length/2,0,die_diameter*sin(bumper_slope)/2])
        rotate([0,bumper_slope,0])
        linear_extrude(overall_length*2)
        square(die_diameter, center=true);
}

// The location where the die comes out (used for difference)
module part_exitVoid(){
    sizeOfCutout = interior_width;
    translate([-interior_length/2-sizeOfCutout/2,0,-eps])
        linear_extrude(die_diameter/sin(bumper_slope)+eps)
        square(sizeOfCutout, center=true);
}

//Little extra top rim that is there to help dice fit inside
module part_toprim(){
    translate([0,0,overall_depth])
    difference(){
        linear_extrude(toprim)
            square([overall_length,overall_width], center=true);
        translate([0,0,-eps/2])
            linear_extrude(toprim+eps)
            square([interior_length,interior_width], center=true);
    }
}

// Simple bottom layer to main box
module part_bottomLayer(){
    translate([0,0,-wall_thickness])
        linear_extrude(wall_thickness)
        square([overall_length,overall_width], center=true);
}

// Create bumpers that go inside the box to bounce the dice
module part_bumpers(){
    difference(){
        //Inner tube
        translate([0,0,-eps/2])
            linear_extrude(interior_depth)
            square([interior_length,interior_width], center=true);
        //DicePaths
        for (i=[0:bumperCount-1]){

            if (i % 2) {
                //Odd
                translate([0,0,bumper_layerOffset*i])
                    rotate([0,0,180])
                    part_dieVoid();
            } else {
                //Even
                translate([0,0,bumper_layerOffset*i])
                    part_dieVoid();
            }
        }
    }
}

//Create the lid
module part_lid(){
    //Make lid shape as seen from its broad side
    coords = [
        [0,0],
        [lid_lipDepth,0],
        [lid_lipDepth,lid_overallDepth*0.85],
        [lid_overallLength,lid_overallDepth-lid_overhang],
        [lid_overallLength,lid_overallDepth],
        [0,lid_overallDepth]
    ];
    //
    rotate([0,-90,0])
    difference(){
        //Outter shape
        rotate([90,0,0])
            translate([-lid_overallLength/2,0,0])
            linear_extrude(lid_overallWidth, center=true)
            polygon(coords);
        //Cutout for box
        translate([0,0,wall_thickness])
            linear_extrude(lid_interiorDepth)
            square([lid_interiorLength,lid_interiorWidth], center=true);
    }
}

```


[User]
I'm looking to create a customizable hair clipper guard, and I'd like to use OpenSCAD to do it parametrically. I have a design in mind, and I'd like you to generate the necessary OpenSCAD files for it. The design is based on a few key components: a base plate, fins for guiding the hair, and a cutter that shapes the fins.

The main parameters I need to be able to adjust are:
*   `fins_num`: The number of fins on the guard (should be 2 or more).
*   `fins_thick`: The thickness of each fin.
*   `size`: The overall size of the guard, which effectively determines how far the hair is from the clipper blades.

Here's a breakdown of the components and how they interact:

1.  **Base Plate:** I have a pre-existing STL file called "base.stl" that represents the base of the guard. This part should be imported directly into the design.

2.  **Fins:** The fins are the comb-like structures that guide the hair. They should be generated parametrically.
    *   There will be `fins_num` of these.
    *   They are spaced based on a fixed width of 22.6 * 2 minus one fin thickness (since you don't need space between the last fin and the edge) and evenly distributed, so the space between each fin can be calculated.
    *   Each fin has its own shape; I also have an STL file called "fin.stl" that represents this shape.  The fin shape will be imported via a linear extrude of the "fin.stl" projection. The shape should be rotated to align properly and extruded with the thickness given by `fins_thick`, and placed such that the edge of the first fin is aligned to 22.6mm and the last fin is at 22.6mm as well.
    * The fins should not extend through the central circle of the main base but should instead fit flush against it. This is done by creating a cylindrical volume and using it to remove material. To make sure the cylinder is large enough, it should be at least the size value and is centered, and that cylinder needs to also be cropped by a rectangular shape such that only the fin side is affected.
    *   There's also a "cutter.stl" file. This shape is to be used to remove material from the fins by a linear extrude with the projection of the cutter shape.

3. **Assembly:** All the components - the base plate, and all generated fins after the cutter process - should be combined into a single object by a union. The fins should be placed relative to the base plate using translations and rotations as necessary.

So, to summarize:

*   I need OpenSCAD code that will import "base.stl", "fin.stl" and "cutter.stl".
*   The code should generate the fins according to the parameters I mentioned.
*   The fins should be positioned correctly relative to the base plate.
*   All parts should be combined into a single, final 3D object for exporting.

I expect the code to be parametric, meaning I can change `fins_num`, `fins_thick` and `size` and have the model update correctly. I also plan to use this design for 3D printing so no unnecessary things should be added. It is important that the code produce valid OpenSCAD code. Can you generate the necessary OpenSCAD file or files for me?

[Assistant]
clipper_kbs.scad:
```
// KBS3056
// Creative Commons - Attribution - Non-Commercial - Share Alike license

$fn = 100;
fins_num = 6;	// [2:]
fins_thick = 2.4;
size = 38;	// [16:84]

//----------------------------------------------------------------------------------------
fins_space = (22.6 * 2 - fins_thick) / (fins_num - 1);
size_corr = size - 3;

union(){
	translate([22.6 - fins_thick / 2, 0, 0]){
		union(){
			for (i = [0 : fins_num - 1]){
				translate([-fins_space * i, 0, 0])
					rotate([0, -90, 0]){
						linear_extrude(fins_thick, center = true)
							projection()
								rotate([0, 90, 0])
									import("fin.stl");
						difference(){
							union(){
								cylinder(h = fins_thick, r = size_corr, center = true);
								translate([-size_corr, -99, -fins_thick / 2])
									cube([size_corr, 99, fins_thick]);
							}
							linear_extrude(100, center = true)
								projection()
									rotate([0, 90, 0])
										import("cutter.stl");
						}
					}
			}
		}
	}
	import("base.stl");
}

```


[User]
Hey there! I'm looking for an OpenSCAD design for a combined tablet stand and dice tower. It needs to be highly customizable, so I can adjust it for different sized tablets and dice. I've seen a few designs out there, but none that quite fit what I'm after.

Here are the key features I need:

*   **Adjustable Tablet Size:** I need to be able to specify the length, width, and thickness of my tablet, and the stand should adjust accordingly. I also need to be able to set the tilt angle.
*   **Dice Tower:** The design should have a dice tower section with internal "bumpers" to randomize the dice rolls. I need to specify the dice diameter.
*   **Dice Tray:** A tray at the bottom to collect the dice, and I should be able to customize its width and depth. It'd be great if there was a finger cutout on the front, too.
*   **Three Core Layouts:** I'd like to be able to choose between three design styles: "minimalist," "sturdy," and "stable." The "stable" version should have a double-wide dice tray, and a wider support base.
*   **Optional Top Funnel:** There should be an optional funnel at the top of the tower to guide dice in. I should be able to set the funnel's depth and angle.
*   **Support:** The support at the back should be optional.
*   **Customizable Wall Thickness:** I'd like to set a minimum wall thickness.
*   **Shelf Stopper:** The tablet shelf should have a little nub to stop the tablet from sliding. I need to be able to specify the height of this stopper.

I think it'll require some trig to make sure everything scales correctly, like the tablet angle. Also, those "bumpers" inside the dice tower seem tricky to calculate. I'm expecting you to take care of all those details though. It'd also be good if it printed without supports, but I'm not sure how feasible that is.

Let me know if you need more info! Oh, and it's okay to include a few dummy models for the tablet and die to make testing easier.

[Assistant]
Tablet_Stand_Dice_Tower_v12.scad:
```
/////////////////////////////////////
// Parameters - modify to change model
/////////////////////////////////////

/* [Design] */
//Select the type of design
design = "stable"; //[minimalist, sturdy, stable]

/* [Die Size] */
//Measurement across widest part of the largest die. (25 is common)
die_diameter = 25;

/* [Tablet] */
// Angle tablet should sit/lean
tablet_tilt = 20; //[5:45]
// Length of tablet in longest edge (length)
tablet_wide = 250;
// Length of tablet on its second longest edge (width)
tablet_tall = 153;
// Length of tablet on its shortest edge (thickness)
tablet_deep = 20;

/* [Tray] */
//Should be around 2x die_diameter for easy access to die
tray_width = 50;
//Should be at least 1x die_diameter to avoid die bouncing out
tray_depth = 25;
//If the shorter wall should be included (may cause occasional bounceouts)
tray_fingerCutout_enable = true;

/* [Funnel] */
//Include a funnel at the top to help make dice drops easier
topfunnel_enable = true;
//How tall the funnel is (make this 0 if you disable funnel!)
topfunnel_depth = 17.19;
//How steep of an angle the funnel has
topfunnel_angle = 45; //[5:45]

/* [Support] */
//Include the support (minimalistic versions only)
support_enable = true;

/* [Misc] */
// Minimum thickness of any surface
wall_depth = 2;//[0.5:4]
// How tall the little nub on the front of the tablet shelf is
shelfStopper_height = 5;

module endOfParams(){}endOfParams();
/////////////////////////////////////
// Hardcoded params - formula-driven or static params
/////////////////////////////////////

//Tiny bit used to make 2d shapes into technically 3d
micro = 0.001;
//Epsilon, added to models to some shapes to produce clean cuts
eps = 0.007;
//Level of detail on curved surfaces
$fn = 64;

tablet_angledHeight = findTiltedRectangleHeight([tablet_deep,tablet_tall]);

//Dice chute is the tube for dice
//Dice Chute inner dimensions
dc_inner_length = die_diameter*2;
dc_inner_width = calcSlantedWidth(die_diameter);
dc_inner_depth = tablet_tall;
//Dice Chute outter dimensions
dc_outer_length = dc_inner_length+wall_depth*2;
dc_outer_width = dc_inner_width+calcSlantedWidth(wall_depth)*2;
dc_outer_depth = dc_inner_depth;

//Shelf that tablet sits on, above receiver
shelf_deepness = tablet_deep + wall_depth;
shelf_width = shelf_deepness * cos(tablet_tilt);
shelf_depth = shelf_deepness * sin(tablet_tilt);

//Measurements for the exit ramp (lives in receiver)
exitRamp_slant = 15;
exitRamp_length = dc_inner_length;
exitRamp_width = shelf_width + dc_inner_width + calcSlantedWidth(wall_depth);
exitRamp_depth = exitRamp_width * tan(exitRamp_slant);

//Receiver - part between chute and tray
//Inner hollow
r_inner_length = dc_inner_length;
r_inner_width = exitRamp_width;
r_inner_depth = die_diameter*0.9 + exitRamp_depth + wall_depth;
//Outer hull
r_outer_length = dc_outer_length;
r_outer_width =  r_inner_width + calcSlantedWidth(wall_depth);
r_outer_depth = r_inner_depth + wall_depth*2;

//Support footprint - prevents tip back
sf_length = dc_outer_length;
sf_width = tablet_angledHeight * tan(tablet_tilt);
//sf_depth = wall_depth;//unused, height is dynamic based on angle

//Top Funnel speacilty measurements
tf_botHeight = tablet_angledHeight-topfunnel_depth;
tf_topHeight = tablet_angledHeight;
tf_ExtraLength = topfunnel_depth*tan(topfunnel_angle)*2;
dc_inner_length_forTopFunnel = dc_inner_length;
dc_outer_length_forTopFunnel = dc_inner_length_forTopFunnel + calcSlantedWidth(wall_depth)*2;

/////////////////////////////////////
// Logic - determine what will be created
/////////////////////////////////////

// Dummy tablet
*
part_tabletPlaceholder();

// Dummy die
*
translate([0,0,43])
part_diePlaceholder();

if (design=="minimalist"){
    create_tower_minimalist();
}
else if (design=="sturdy"){
    create_tower_sturdy();
}
else if (design=="stable"){
    create_tower_stable();
}
else {
    echo("Oops! The selected design isn't in the logic list! Nothing rendered.");
}

/////////////////////////////////////
// Create - Generate a printable elements from parts
/////////////////////////////////////

//First dice tower assembly. Original
module create_tower_minimalist(){
   // Die chute
    die_chute();
    // Shelf
    part_shelf();
    // Receiver
    part_receiver();
    // Dice tray
    part_tray();
    // Bumpers
    part_bumpers();
    // Support
    part_support();
}

//First dice tower assembly. Original
module create_tower_sturdy(){
   // Die chute
    die_chute();
    // Shelf
    part_shelf();
    // Receiver
    part_receiver();
    // Dice tray
    part_tray();
    // Bumpers
    part_bumpers();
    // Support
    part_support();
}

//Double Wide dice tray and support
module create_tower_stable(){
   // Die chute
    die_chute();
    // Shelf
    part_shelf();
    // Receiver
    part_receiver();
    // Dice tray
    part_tray(dc_outer_length*2);
    // Bumpers
    part_bumpers();
    // Support
    part_support();
}

/////////////////////////////////////
// Parts - elements that make up larger bits of model
/////////////////////////////////////

// Placeholder for where tablet goes (also used for cutout of tray)
module part_tabletPlaceholder(){
    color("green")
        rotate([-tablet_tilt,0,0])
        translate([-tablet_wide/2,-tablet_deep,0])
        linear_extrude(tablet_tall)
        square([tablet_wide,tablet_deep]);
}

// Fake die
module part_diePlaceholder(){
    color("orange")
    translate([0,0,die_diameter/2])
    sphere(d=die_diameter);
}

// Hollow chute the die dropds down (not its opening or exit)
module die_chute(){
    //Primary chute
    difference(){
        //Outter body
        die_chute_outter();
        //Inner hollow
        die_chute_inner();
        //Top funnel (conditional) void
        if (topfunnel_enable){part_topFunnel_outer();}
    }
    //Top funnel (conditional creation)
    if (topfunnel_enable){part_topFunnel();}
}

// Exterior of chute
module die_chute_outter(){
    translate([0,dc_outer_width/2,0])
    hull(){
        //Top
        translate([0,tablet_angledHeight*tan(tablet_tilt),tablet_angledHeight-micro])
            linear_extrude(micro)
            square([dc_outer_length,dc_outer_width], center=true);
        //Bottom
        linear_extrude(micro)
            square([dc_outer_length,dc_outer_width], center=true);
    }
}

// Interior of chute
module die_chute_inner(){
    translate([0,dc_outer_width/2,0])
    hull(){
        //Top
        translate([0,tablet_angledHeight*tan(tablet_tilt),tablet_angledHeight-micro-eps/2])
        linear_extrude(micro+eps)
        square([dc_inner_length,dc_inner_width], center=true);
        //Bottom
        linear_extrude(micro)
        square([dc_inner_length,dc_inner_width], center=true);
    }
}

//Shelf tablet sits on, above receiver
module part_shelf(){
    // Shelf
    rotate([0,-90,180])
        linear_extrude(dc_outer_length, center=true)
        polygon([
            [0,0],
            [0,shelf_width],
            [shelf_depth,shelf_width]
        ]);
    // Shelf stopper (little nub to stop tablet sliding out)
    if (shelfStopper_height != 0) {
        translate([0,-shelf_width+wall_depth/2,0])
        linear_extrude(shelf_depth+shelfStopper_height)
        square([dc_outer_length, wall_depth], center=true);
    }
}

// Create receiver, the part between chute and tray
module part_receiver(){
    part_receiver_body();
    part_receiver_funnel();
    part_reciver_exitRamp();
}

// Funnel that both helps dice enter receiver and supports shelf
module part_receiver_funnel(){
    intersection(){
        // Create and position bars
        translate([0,0,-wall_depth])
        rotate([90,0,0]){
            translate([die_diameter,0,0])
                part_receiver_funnel_bar();
            translate([-die_diameter,0,0])
                part_receiver_funnel_bar();
        }
        // Make interior cutout shape for chute and receiver
        union(){
            part_receiver_body_inner();
            die_chute_inner();
            part_receiver_body_entrance();
        }
    }
}

// Acts as a funnel and also adds supports. Joins chute/receiver
module part_receiver_funnel_bar(){
    rotate([0,0,45])
    linear_extrude(400, center=true)
    square(die_diameter*sqrt(2)/2, center=true);
}

// Create the receiver's body (the main outter piece)
module part_receiver_body(){
    difference(){
        //Outter
        part_receiver_body_outer();
        //Inner
        part_receiver_body_inner();
        //Entrance from chute cutout
        part_receiver_body_entrance();
    }
}

// Cutout for
module part_receiver_body_entrance(){
    // Basic cutout, vertical
    y = dc_inner_width/2 + calcSlantedWidth(wall_depth);
    translate([0,y,-wall_depth+eps/2])
        linear_extrude(wall_depth+eps)
        square([dc_inner_length,dc_inner_width], center=true);
    /*
    //Complex cutout alternative that should handle thick walls better
    //But won't support the shelf as well, so eff it
    hull(){
        //Width of the "bottom" of the top receiver
        angledPart = die_diameter * tan(tablet_tilt);
        widthAtBottom = angledPart + dc_inner_width;

        //Top
        translate([0,dc_inner_width/2+calcSlantedWidth(wall_depth),eps])
            linear_extrude(micro)
            square([dc_inner_length,dc_inner_width], center=true);
        //Bottom
        //angledPart = die_diameter * tan(tablet_tilt);
        translate([0,angledPart-calcSlantedWidth(wall_depth),-die_diameter-eps])
            linear_extrude(micro+eps)
            square([dc_inner_length,widthAtBottom], center=true);
    }
    */
}

// Outer body of receiver
module part_receiver_body_outer(){
    translate([0,r_outer_width/2-shelf_width,-r_outer_depth])
        linear_extrude(r_outer_depth)
        square([r_outer_length,r_outer_width],center=true);
}

// Inner body of receiver
module part_receiver_body_inner(){
    translate([0,r_inner_width/2-shelf_width-eps,-r_inner_depth-wall_depth])
        linear_extrude(r_inner_depth+eps)
        square([r_inner_length,r_inner_width+eps],center=true);
}

// Exit ramp that lives in receiver to eject die to tray
module part_reciver_exitRamp(){
    test = shelf_width + dc_outer_width;
    *
    translate([0,test/2-shelf_width,0])
    linear_extrude(50)
    square([dc_inner_length,test],center=true);

    yOffset = dc_inner_width+calcSlantedWidth(wall_depth);
    zOffset = -r_inner_depth - wall_depth;
    translate([0,yOffset,zOffset])
    rotate([90,0,-90])
    linear_extrude(exitRamp_length, center=true)
    polygon([
        [0,0],
        [0,exitRamp_depth],
        [exitRamp_width,0]
    ]);

}

//Tray where dice end up
module part_tray(trayLength=dc_outer_length){
    difference(){
        //Main body
        part_tray_base(tray_depth+wall_depth,wall_depth,trayLength);
        //Cutout for empty space
        translate([0,0,wall_depth])
            part_tray_base(tray_depth+wall_depth,0,trayLength);
        //Used to clear out wall between receiver's exit and tray
        translate([0,-eps,0])
            part_receiver_body_inner();
        //Finger access cutouts
        if (tray_fingerCutout_enable){
            part_tray_fingerAccess(trayLength);
        }
    }
}

// Make basic tray shape
module part_tray_base(depth=wall_depth,offset=0,trayLength){
    //Break tray width up into 3'rds. 2 parts will be square, 1 will be oval
    tray_width_part = (tray_width-wall_depth)/3;
    //Position entire tray
    translate([0,-tray_width_part-shelf_width,-r_outer_depth])
    union(){
        //square part
        linear_extrude(depth)
            offset(r=offset)
            square([trayLength-wall_depth*2,tray_width_part*2],center=true);
        //circle part
        translate([0,-tray_width_part,0])
            linear_extrude(depth)
            offset(r=offset)
            resize([trayLength-wall_depth*2,tray_width_part*2])
            circle(d=1);
    }
}

//Create slot for fingers to get to dice easier
module part_tray_fingerAccess(trayLength){
    translate([0,-shelf_width,-r_outer_depth+tray_depth+wall_depth])
        rotate([0,90,0])
        linear_extrude(trayLength+eps, center=true)
        resize([tray_depth,tray_width/3*2*2])//1/2 circle 2'rds of tray length
        circle(d=1);
}

// Create bumpers in chute
module part_bumpers(){
    // Calculate points for where bouncers go
    highestPoint = tablet_angledHeight-die_diameter-topfunnel_depth;
    lowestPoint = die_diameter+die_diameter/2;
    distance = highestPoint-lowestPoint;
    minSpaceBetweenBumpers = die_diameter/sin(45);
    bumperCount = floor(distance/minSpaceBetweenBumpers);
    echo("Number of bumpers in this configuration:",bumperCount+1);
    echo("Number of bumpers is determined by funnel depth, tablet wide & tilt, and die diameter");

    //Create bouncer shapes
    intersection(){
        //Bouncers that are too long
        for (i=[0:bumperCount]){
            LorRpos = i%2 ? dc_inner_length/2 : -dc_inner_length/2;
            zpos = lowestPoint+(minSpaceBetweenBumpers*i);
            translate([LorRpos,0,zpos])
            part_bumpers_single();
        }
        //The space in the die chute they occupy: cuts them down
        die_chute_inner();

    }
}

//Create a simple bumper shape
module part_bumpers_single(){
    rotate([-90,0,0])
        linear_extrude(500)
        resize([die_diameter*2, die_diameter*2])
        rotate([0,0,45])
        square(1, center=true);
}

// Create basic support to prevent tilts
module part_support(){
    if (support_enable){
        if (design == "minimalist"){
            part_support_minimalist();
        }
        else if (design == "stable"){
            part_support_stable();
        }
        else if (design == "sturdy"){
            part_support_sturdy();
        }
    }
}

// Create minimalist support
module part_support_minimalist(){
    support_angle = 15;
    support_totalHeight = wall_depth + (sf_width * tan(support_angle));

    //Support object with overflow
    hull(){
        //Top skini line at tower
        translate([0,dc_outer_width,-r_outer_depth+support_totalHeight])
            linear_extrude(micro)
            square([sf_length,micro], center=true);
        //Bottom plate
        translate([0,sf_width/2+dc_outer_width,-r_outer_depth])
            linear_extrude(wall_depth)
            square([sf_length,sf_width], center=true);
    }
}

// Minimalist support made tall
module part_support_sturdy(){
    stupidBigNumber = 10000; //used to oversized trim. Its lazy.
    support_angle = 85;
    support_totalHeight = wall_depth + (sf_width * tan(support_angle));
    difference(){
        //Support object with overflow
        hull(){
            //Top skini line at tower
            translate([0,dc_outer_width,-r_outer_depth+support_totalHeight])
                linear_extrude(micro)
                square([sf_length,micro], center=true);
            //Bottom plate
            translate([0,sf_width/2+dc_outer_width,-r_outer_depth])
                linear_extrude(wall_depth)
                square([sf_length,sf_width], center=true);
        }
        //Trim object to remove excess
        translate([0,dc_outer_width,0])
            rotate([-tablet_tilt,0,0])
            linear_extrude(stupidBigNumber)
            translate([0,-stupidBigNumber/2,0])
            square([stupidBigNumber,stupidBigNumber], center=true);
    }
}

// Double-wide support
module part_support_stable(){
    support_angle = 15;
    support_totalHeight = wall_depth + (sf_width * tan(support_angle));

    difference(){
        //Support shape
        hull(){
            //Top plate
            translate([0,r_outer_width/2-shelf_width,-r_outer_depth+support_totalHeight])
                linear_extrude(micro)
                square([r_outer_length,r_outer_width],center=true);
            //Base plate
            translate([0,dc_outer_width,-r_outer_depth])
                linear_extrude(wall_depth)
                union(){
                    widthThird = sf_width/3;
                    //Square part
                    translate([0,widthThird*2,0])
                        resize([sf_length*2,widthThird*2])
                        circle(1);
                    //Round part
                    translate([0,widthThird,0])
                        square([sf_length*2,widthThird*2], center=true);
                    //Under the body part
                    translate([0,-r_outer_width/2,0])
                        square([sf_length*2,r_outer_width],center=true);
                }
        }
        //Cutout to avoid filling receiver with trash
        part_receiver_body_outer();
    }
}

// Top funnel
module part_topFunnel(){
    difference(){
        part_topFunnel_outer();
        part_topFunnel_inner();
    }
}

// Funnel outer shape
module part_topFunnel_outer(){
    hull(){
        //Bottom
        translate([0,dc_outer_width/2+tf_botHeight*tan(tablet_tilt),tf_botHeight])
        linear_extrude(micro)
        square([dc_outer_length_forTopFunnel,dc_outer_width], center=true);
        //Top
        translate([0,dc_outer_width/2+tf_topHeight*tan(tablet_tilt),tf_topHeight])
        linear_extrude(micro)
        square([dc_outer_length_forTopFunnel+tf_ExtraLength,dc_outer_width], center=true);
    }
}

// Funnel inner shape
module part_topFunnel_inner(){
    translate([0,calcSlantedWidth(wall_depth),0])
    hull(){
        //Bottom
        translate([0,dc_inner_width/2+tf_botHeight*tan(tablet_tilt),tf_botHeight])
        linear_extrude(micro)
        square([dc_inner_length_forTopFunnel,dc_inner_width], center=true);
        //Top
        translate([0,dc_inner_width/2+tf_topHeight*tan(tablet_tilt),tf_topHeight+eps])
        linear_extrude(micro)
        square([dc_inner_length_forTopFunnel+tf_ExtraLength,dc_inner_width], center=true);
    }
}

/////////////////////////////////////
// Functions - helper functions used to make things easier
/////////////////////////////////////

function findTiltedRectangleHeight(dimensions) =
    let(
        width = dimensions[0],
        height = dimensions[1]
    )
    height*cos(tablet_tilt) + width*sin(tablet_tilt)
;

function findTiltedRectangleWidth(dimensions) =
    let(
        width = dimensions[0],
        height = dimensions[1]
    )
    height*sin(tablet_tilt) + width*cos(tablet_tilt)
;

// Determine how much wider a shape gets based off its skew (tilt)
function calcSlantedWidth(width) = width / sin(90-tablet_tilt);

```


[User]
Hey, I'm trying to design some cabinet hooks to keep my cats out, and I'm hoping you can help me with the OpenSCAD code. I've got a basic idea, and I need it to be parametric so I can easily adjust the dimensions.

Essentially, it's a flat hook that fits over the cabinet door and frame. I need to be able to control:

*   The **inner width** of the hook opening (the part that goes over the door), which I'll call `hook_width`.
*   The **inner length** of the hook's leg (the part that goes down the door), which I'll call `hook_length`.
*   The **width of each leg** of the hook (the sides of the 'U' shape), which should be named `leg_width`.
*   The **overall thickness** of the hook, which I'll call `thickness`.
*   A **boolean** flag to add a small handle on the top, called `add_handle`.

I was thinking the hook could be made by subtracting a smaller cube from a larger one. This will give us the inner 'U' shape. And then if `add_handle` is true, create and add a thin, rectangular handle on the top.

Could you write the OpenSCAD code for this? I want to use the following parameters in my script: `hook_width`, `hook_length`, `leg_width`, `thickness`, and `add_handle`. I'd like to call the top-level module `cabinet_hook`.

I'd also like it if you could include an example at the end of the file that demonstrates the hook with a `hook_width` of 70, a `hook_length` of 40, a `leg_width` of 20, a `thickness` of 4, and `add_handle` is true. I'd like for this test case to be called `test_hook`.

Thanks!

[Assistant]
schrankhaken.scad:
```
/* [Dimensions in mm] */
// -  Width of hook (inner size)
Size=70;
// -  length of hook leg (inner size)
Heigth=40;
// -  leg width
Leg_Width=20;
// -  thickness
Thickness=4;
// - Create Handle?
Handle=true;

boden(Size, Heigth, Leg_Width, Thickness, Handle);

module boden(S, H, L, T, HandleFlag)
{
union()
{
  color("pink"){
    translate([-(S+2*L)/2,-(H+2*L)/2,0])
    difference() {
      cube([S+2*L,H+2*L,T]);
      translate([L,L,-T])
        cube([S+0.01,H+L+0.01,T*3]);
    }
  }
  if (HandleFlag) {
    color("blue"){
      translate([-(S/2+L),-(H/2+L),T-0.01])
      cube([S+2*L,T/2,T*0.5]);
    }
  }
}
}

```


[User]
Hey there, I'm looking to create a system of modular arms and connectors in OpenSCAD, and I need some help designing it. I've seen some existing solutions, but they're not quite what I need, and I'd like something fully parametric and flexible.

Basically, I need to create an arm that can have different kinds of connectors on each end, and optionally in the middle. The connectors should be of two genders, let's call them "Male" and "Female," and they should be able to rotate relative to the arm. Also, it'd be great if they could be angled too.

Here's a more detailed breakdown of the requirements:

**Core Components:**

*   **Arm:**
    *   The arm needs to be of a specified length.
    *   It needs to be a constant thickness (say, 15mm) throughout its length.
    *   It should have the option to include contour cuts along its length, primarily for aesthetic purposes
    *   It should have the option to include a wire tunnel running through the center of it, with exits at the top of each end.
*   **Connectors:**
    *   Two genders: "Male" and "Female". Male should be two fingers, and female should have three fingers that mesh with the male connectors. The dimensions should be such that they connect smoothly and securely.
    *   Connectors should have a defined length (say, 18mm).
    *   Connectors should have screw holes sized for M3, M4, and M5 screws.
    *   Connectors can be oriented vertically (screw head points toward the top) or horizontally (screw head points toward the side).
    *   Connectors can be rotated around the center of their attachment to the arm by 90 degree increments.
    *   Connectors can be angled at the center of their attachment to the arm.
    *   The base (the guide below the fingers of the connector) can be omitted when creating an MMSConnector directly, thus making a shorter connector for better flexibility.

**System Features:**

*   **Arm Customization:**
    *   Arm length should be a parameter.
    *   Each end connector should be independently settable to "Male," "Female," or "None."
    *   Each end connector should have an independently configurable rotation in 90 degree steps
    *   Each end connector should have an independently configurable angle relative to the arm.
    *   The screw size (M3, M4, or M5) should be configurable for all connectors.
    *   Option to include or exclude contour cuts (only applicable if the arm length is long enough, and there's no tee connector).
    *   Option to include or exclude a wire tunnel.
    *   A "tee" connector can be added in the middle of the arm, also with a settable gender, rotation, and offset from the center of the arm, and can be oriented in the Y or Z direction. The offset should be configurable. The tee connector should be oriented in the -Y direction unless specified to be in the +Z direction.
*   **Connector Customization:**
    *   Connectors can be created standalone with a specified gender, rotation, and screw size.
    *   The base can be included or omitted when creating a stand-alone connector.

**Specific Design Requirements:**

*   Use $fn variable to make sure all circles are nice, especially for 3D-printing.
*   I'm thinking all dimensions should be based on a few key variables: `MMSArmThickness` for the thickness of the arm and connectors, and `MMSConnLength` for the length of a standard connector.
*   The connectors should have a finger fit of 0.1 mm so that connections are not too tight or too loose
*   Connectors should have a small base guide that extends below them.
*   The screw head pockets in the female connector should use the appropriate screw head sizes, including an additional 1mm on the radius so that the screw heads don't rub.
*   The wire tunnel should be of a decent size so that wires don't get snagged, and should be about 1/6th the thickness of the arm.
*   For reference, I'm using the `ruler.scad` library (from Thingiverse) for a ruler display, but this isn't something you need to create since it's from an external library.

**Example Usage:**

I'd like a file with two main modules, `MMSArm()` and `MMSConnector()`. The user should be able to use these modules to create any desired combination. I need an example file to show the customizer, that will demonstrate all of the above features.

I think that's everything! Let me know if you have questions. I'm looking forward to seeing what you come up with.

[Assistant]
Modular_Mounting_System_Arm.scad:
```
// Mobile Mounting System Arm Library for OpenSCAD
// B. Ratoff, May-June 2023
//
//
// MMSArm() Arguments:
//  length - Length of arm between screw hole centers
//    (required and must be >= 27)
//  gender1 - gender of first connector, where:
//    "Male" = two prong side
//    "Female" = three prong side
//    "None" = no connector
//  gender2 - gender of second connector
//    (default is gender1 male, gender2 female)
//  twist1 - degrees rotation from vertical of first connector
//  twist2 - degrees rotation of second connector
//    (default is both vertical, with screw head pocket of
//     female connector in positive Y direction)
//  angle1 - angle of first connector with respect to arm
//  angle2 - angle of second connector
//    (default is no angle, angle is in positive Y direction)
//    Note: Connectors rotate with respect to their point
//      of attachment to the arm, so rotating connectors
//      in opposite directions produces a "dog leg" effect.
//  screw - screw size designator, where:
//    0 = M5 (default)
//    1 = M4
//    2 = M3
//  cuts - true (default) if contour cuts are wanted
//    (ignored if length < 40 or tee != "None")
//  tee - if "Male" or "Female", enables a third connector
//    in the middle of the arm for making tees, etc.
//    Default is "None".
//    Default location in center of arm (see off3).
//    Always oriented in negative Y direction
//  twist3 - rotation from vertical of tee connector
//    (Default is 0)
//  off3 - offset position of tee from center in mm
//    (Default is 0)
//    Note: For tee to look right, length must be > 41.
//  dir3 - "Y" puts tee in -Y direction, "Z" in +Z direction
//  wire - (default false) if true, adds a wire tunnel down
//    the center of the arm, with exits on top at each end
//
//

// For compatibility with other MMS components, do not
// change these values!
MMSArmThickness = 15;
MMSConnLength = 18;

module MMSArm(length=27, gender1="Male", gender2="Female", twist1=0, twist2=0, angle1=0, angle2=0, screw=0, cuts=true,tee="None",twist3=0,off3=0,dir3="Y",wire=false) {

  $fn = 256;
  RodLength = length - MMSConnLength*1.5;

  assert((RodLength >= 0),str("MMSArm: length must be >= ",1.5*MMSConnLength));
  assert((screw >= 0 && screw < 3), "MMSArm: screw must be 0, 1 or 2");

  as1 = angle1 >= 0 ? 1 : -1;
  as2 = angle2 >= 0 ? 1 : -1;
  difference() {
    union() {
      cube([RodLength, MMSArmThickness, MMSArmThickness], center = true);
      translate([RodLength/2+as1*sin(angle1)*MMSArmThickness/2-as1*0.01,as1*MMSArmThickness/2-as1*cos(angle1)*MMSArmThickness/2,0]) MMSConnector(gender1,angle1,twist1,screw);
      translate([-RodLength/2-as2*sin(angle2)*MMSArmThickness/2+as2*0.01,as2*MMSArmThickness/2-as2*cos(angle2)*MMSArmThickness/2,0]) MMSConnector(gender2,180-angle2,180-twist2,screw);
    }
    if((length > 39) && cuts && (tee == "None")) RodCuts(RodLength);
    if(RodLength > 1.5*MMSArmThickness && wire) WireHole();
  }
  translate([RodLength/2,as1*MMSArmThickness/2,-MMSArmThickness/2]) rotate(as1*-90) rotate_extrude(angle=angle1) square(MMSArmThickness);
  translate([-RodLength/2,as2*MMSArmThickness/2,-MMSArmThickness/2]) rotate(-as2*90) rotate_extrude(angle=-angle2) square(MMSArmThickness);
  ty = dir3 == "Y" ? -MMSArmThickness/2 : 0;
  tz = dir3 == "Y" ? 0 : MMSArmThickness/2;
  tr = dir3 == "Y" ? 0 : -90;
  translate([off3,ty,tz]) rotate([tr,0,0]) MMSConnector(tee,-90,twist3,screw);

// Nested modules

module WireHole() {
  translate([length/2-MMSArmThickness/2-MMSConnLength,0,MMSArmThickness/2+0.1]) rotate([-90,0,0]) rotate_extrude(angle=90) translate([MMSArmThickness/2,0,0]) circle(MMSArmThickness/6);
  rotate([0,0,180]) translate([length/2-MMSArmThickness/2-MMSConnLength,0,MMSArmThickness/2+0.1]) rotate([-90,0,0]) rotate_extrude(angle=90) translate([MMSArmThickness/2,0,0]) circle(MMSArmThickness/6);
  translate([0,0,0.1]) rotate([0,90,0]) cylinder(h=length-3*MMSArmThickness-MMSArmThickness/3-0.99, r=MMSArmThickness/6, center=true);
}

module RodCuts(lrod) {
  CutRadius = 1.5*lrod^2/MMSArmThickness;
  CutOffset = MMSArmThickness/2;

  of1 = angle1 == 0 ? MMSConnLength/4 : 0;
  of2 = angle2 == 0 ? MMSConnLength/4 : 0;
  difference() {
    rotate([45,0,0]) union() {
      translate([0,CutRadius+CutOffset,0]) cylinder(h=MMSArmThickness+2, r=CutRadius, center=true);
      translate([0,-(CutRadius+CutOffset),0]) cylinder(h=MMSArmThickness+2, r=CutRadius, center=true);
      translate([0,0,CutRadius+CutOffset]) rotate([90,0,0]) cylinder(h=MMSArmThickness+2, r=CutRadius, center=true);
      translate([0,0,-(CutRadius+CutOffset)]) rotate([90,0,0]) cylinder(h=MMSArmThickness+2, r=CutRadius, center=true);
    }
    translate([lrod/2+of1,-3*CutRadius,-3*CutRadius]) cube(6*CutRadius);
    translate([-6*CutRadius-lrod/2-of2,-3*CutRadius,-3*CutRadius]) cube(6*CutRadius);
  }
} // End of RodCuts

} // End of MMSArm

// Parameters for MMSConnector(gender,dir,rot,screw):
// gender = "Male" (2 fingers) or "Female" (3 fingers)
// dir = direction the end points (0 = positive x)
// rot = axis orientation of connector (0 = vertical)
// screw = 0=M5, 1=M4, 2=M3 (default 0)
// base = true to keep bottom guide of connector
module MMSConnector(gender, dir=0, rot=0, screw=0, base=true) {
  $fn = $preview ? 32 : 128;
  FingerFit = 0.1;
  FingerThickness = MMSArmThickness/5-FingerFit;

  assert(rot % 90 == 0, "Connector rotation must be a multiple of 90 degrees");

  rotate([rot-90,0,dir]) difference() {
    union() {
    if(gender == "Male")
      MMSMale(dir, rot, screw, base);
    if(gender == "Female")
      MMSFemale(dir, rot, screw);
    }
  }

// Nested modules

module MMSMale(dir=0, rot=0, screw=0, base=true) {
  if(base) MMSConnBase();
  translate([0,0,-MMSArmThickness*3/10+FingerFit/2]) MMSFinger(screw,base);
  translate([0,0,MMSArmThickness/10-FingerFit/2]) MMSFinger(screw,base);
} // End MMSMale()

module MMSFemale(dir=0, rot=0, screw=0) {
  MScrewHeads = [9.4, 8.1, 6.4];
  MScrewDepths = [3.8, 3.0, 2.5];

  difference() {
    union() {
      MMSConnBase();
      translate([0,0,-MMSArmThickness/2]) MMSFinger(screw);
      translate([0,0,-FingerThickness/2]) MMSFinger(screw);
      translate([0,0,MMSArmThickness*3/10+0.1]) MMSFinger(screw);
      translate([MMSConnLength*3/4,0,MMSArmThickness/2]) cylinder(h=2,r1=MMSArmThickness/2,r2=MScrewHeads[screw]/2+1);
    }
    translate([MMSConnLength*3/4,0,MMSArmThickness/2+2-MScrewDepths[screw]]) cylinder(h=MScrewDepths[screw]+1, r=MScrewHeads[screw]/2, $fn=6);
  }
} // End MMSFemale()

module MMSConnBase() {
  PointShape = [[0,-MMSArmThickness/2], [MMSArmThickness*tan(30)/2,0], [0,MMSArmThickness/2]];
  linear_extrude(MMSArmThickness, center=true) polygon(PointShape);
} // End MMSConnBase()

module MMSFinger(screw=0, base=true) {
  MScrewHoles = [5.4, 4.3, 3.3];
  xlen = base ? MMSConnLength*3/4 : MMSConnLength/2;
  difference() {
    union() {
      translate([0,-MMSArmThickness/2,0]) cube([xlen,MMSArmThickness,FingerThickness]);
      translate([xlen,0,0]) cylinder(h=FingerThickness, r=MMSArmThickness/2);
    }
    translate([xlen,0,-0.1]) cylinder(h=FingerThickness+0.2, r=MScrewHoles[screw]/2);
  }
} // End MMSFinger()

} // End MMSConnector()

```
Modular_Mounting_System_Arm_Configurable.scad:
```
// Mobile Mounting System Arm Configurable for OpenSCAD
// B. Ratoff, May-June 2023
//

/*[View]*/
Cutaway = false;
Rotate = 0; //[0:90:270]
Ruler = false;
Ruler_X = 0;  //[-100:100]
Ruler_Y = 0;  //[-100:100]

/*[Dimensions]*/
// Hole center to hole center
Arm_Length = 27;  // [27:280]
Screw_Size = 0;  // [0:"M5", 1:"M4", 2:"M3"]

/*[Options]*/
// Add contour cuts along rod length
Rod_Cuts = true;
// Add tunnel for wires
Wire_Tunnel = false;

/*[End Connectors]*/
// Gender of end connectors
Gender_1 = "Male"; // ["Male", "Female", "None"]
Gender_2 = "Female"; // ["Male", "Female", "None"]

// Rotation of connectors from vertical
Gender_1_Twist = 0;  // [0:90:270]
Gender_2_Twist = 0;  // [0:90:270]

// Angle between connecctors and arm
Gender_1_Angle = 0;  // [-180:15:180]
Gender_2_Angle = 0;  // [-180:15:180]

/*[Tee Connector]*/
// Choose gender to add a "tee" connector in middle of arm
Tee_Connector = "None"; //["Male", "Female", "None"]
// Orientation ("twist") of tee connector
Tee_Twist = 0;  // [0:90:270]
// Offset of tee from center as a percentage of arm length
Tee_Offset = 0; // [-50:50]
// Direction of tee can be -Y or +Z
Tee_Direction = "Y";  //["Y","Z"]

include<Modular_Mounting_System_Arm.scad>

include<ruler.scad>

if(Ruler) translate([Ruler_X,Ruler_Y,MMSArmThickness/2]) xruler();

difference() {
  rotate([-Rotate,0,0]) MMSArm(Arm_Length, Gender_1, Gender_2, Gender_1_Twist, Gender_2_Twist, Gender_1_Angle, Gender_2_Angle, Screw_Size, cuts=Rod_Cuts,tee=Tee_Connector,twist3=Tee_Twist,off3=Tee_Offset/100*(Arm_Length-2.34*MMSConnLength),dir3=Tee_Direction,wire=Wire_Tunnel);
  if(Cutaway && $preview) translate([-Arm_Length/2-MMSConnLength/2,-MMSArmThickness-2,-MMSArmThickness/2-1]) cube([Arm_Length+MMSConnLength,MMSArmThickness+2,MMSArmThickness+2]);
}

```


[User]
I need to design a customizable container with a few key features, and I'd like to use OpenSCAD for it.

The container should have these parameters:

*   **H**: The total height of the container when stacked, in millimeters. This can optionally include the height of a stack, depending on the `C` parameter.
*   **N**: The number of stacked parts (sub-containers) that fit within the total height `H`.
*   **W**: The final width of the container, in millimeters.
*   **L**: The final length of the container, in millimeters.
*   **T**: The thickness of the container wall and stack, in millimeters. This should be a multiple of the nozzle size of a 3D printer, so probably a multiple of 0.4 or 0.6.
*  **TB**: The thickness of the base in mm.
*   **R**: The radius for rounding the corners of the container, in millimeters.
*   **S**: A boolean (1 or 0) to enable or disable a stacking feature on the bottom of each sub-container. If `S` is 1, there is a stack; otherwise, no stack.
*   **C**: A boolean (1 or 0) to indicate if the stack height should be included in the total height `H` calculation. If `C` is 1, the stack's height is included in `H`.
*   **l**: The looseness (tolerance) value for the stacking fit, in millimeters.
*   **D**: A boolean (1 or 0) to enable or disable a recessed bottom feature, which essentially digs out the bottom of the container (when stacking is enabled).
*   **Sep**: A boolean (1 or 0) to enable or disable a separating plane in the container.
*  **TS**: The thickness of the separator

The container should be based on a rounded rectangle shape.  I have a `round_rect_shape` module already defined, but you'll need to generate the rest of the modules.

If stacking is enabled, the container should consist of multiple stacked parts. The height of each sub-container needs to be calculated based on the total height and number of parts `N`, so they all fit within the total height `H`. The stacking part should be on the bottom of the sub-container and, if `D` is enabled, a bottom recess is added to accommodate this. The separator should be a thin plane within the container, with a small support in the center.

I'd like you to use color for visual clarity: DodgerBlue for the main container body and Khaki for the stack. Red for the center support of the separator.

I think that's everything. Let me know if you need any clarification.

[Assistant]
container.scad:
```
// Final Height of the stacked parts in mm, including stack or not (see C)
H = 56;

// number of stacked parts that should fit in that height
N = 2;

// Final Width in mm
W = 42;

// Final length in mm
L = 83;

// Thickness of wall and stack in mm (use a multiple of nozzle size, ex for 0.4: [1,2, 1.6, ...])
nozzle = 0.6;
T = 2*nozzle;

// thickness of base
TB = 1;

// radius for rouding of corner
R = 5;

// [1/0] enable/disable stack
S = 0;

// [1/0] count/discard stack in final height
C = 1;

// Looseness of the stack
l = 0.5;

// [1/0] enable/disable dig bottom
D = 0;

// [1/0] separator
Sep = 1;
TS = T; // thickness of separator;

$fn=100;

// define base shape, exemple for a round rectangle
// ensuring that it fit inside a box of w x l
module round_rect_shape(w=W,l=L,radius=R) {
    w = w - 2*R;
    l = l - 2*R;

    points = [ [0,0,0], [w,0,0], [0,l,0], [w,l,0] ];

    translate([R, R, 0])
    projection(cut = false)
    hull(){
        for (p = points){
            translate(p) cylinder(r=radius, h=1);
        }
    }
}

// separator plane
module sep( height) {

    intersection() {
        color("DodgerBlue")
            linear_extrude(height)              // outer height
                  children();

        color("red")
        translate([0.01, L/2, 0])
            cube( [W - 0.1, 1, height]);
    }
}

// take shape as children
// and to the extrusion
module top_box( height, thickness, looseness, base_thickness) {
    B = base_thickness * S;
    total = height - B*C;                    // adjust total height with stack

    // compute height for given number of parts: x*N + thickness = total
    height = (total - B) / N;

    A = height - base_thickness;

    translate([0, 0, B])
    union() {
        difference()
        {
            color("DodgerBlue")
            linear_extrude(height)              // outer height
                  children();

            color("Khaki")
            translate([0, 0, thickness])        // bottom
            linear_extrude(height = A + 0.1)
                offset(delta = -thickness)      // side
                    children();

            if( S*D == 1) {
                linear_extrude(height = B + 0.1) // dig bottom
                offset(delta = -( thickness * 2 + looseness) )      // side
                    children();
            }

         }

        // stack
        color("Khaki")
        translate([0, 0, -B])               // under part
        linear_extrude(height = B)
            offset(delta = -( thickness + looseness))      // side
                children();

        // separator
        if( Sep == 1) {
            // if stack need to reduce separator
            sep(height - B) round_rect_shape();
        }
    }
 }

// box
module box( height, thickness, looseness = l, base_thickness = TB) {
 top_box( height, thickness, looseness, base_thickness)
        children();
}

box(H, T) round_rect_shape();
```


[User]
Okay, so I'm trying to make a fidget toy, specifically a print-in-place hinge, and I need help generating the OpenSCAD code. I have a general idea of how it should work, but I need something parametric so I can adjust the dimensions easily. I've seen other designs online, but I need to build something from scratch.

Here’s the core concept:

*   **Basic Hinge Structure:** The hinge will have two plates connected by a series of interlocked barrels, cones, and sockets. It should print in place, meaning the moving parts are generated with sufficient tolerance to function correctly after printing. I've done some testing and believe the tolerance should be configurable.

*   **Plates:** The plates should be flat and rectangular and stick out of the hinge for a distance. They need to have a configurable height (thickness), width, and depth (how far they stick out). Whether or not they are even needed should also be a configurable parameter.

*   **Barrels:** The barrels should be cylindrical and create the main part of the hinge's motion, and need to be wide enough to support the cones. I need to control the minimum barrel size, and spacing between them.

*   **Cones and Sockets:** The barrels should alternate having cones on the sides, and sockets to receive those cones. The cones will be created by scaling a cylinder by a certain percentage of the width, and that scaling should be configurable. The socket should be made by cutting the cone from a barrel, meaning those two variables will be linked. I need to control how far the cones extend.

* **Tabs:** The barrels will be attached to the plates using small tab-like extensions. They need to be the same height as the plate plus the gap for the hinge, and they need to be configurable.

*   **Tolerance:** I need a parameter to control the air gap between the barrels, cones, and sockets to ensure a print-in-place fit. I need to be able to increase and decrease this value depending on my printer settings.

*   **Rounding:** I'd like to have an option to add rounded corners or bevels to the plates and edges of the hinge, this needs to be a toggle and the size should be a configurable parameter. I would also need the shapes used to cut out the bevels.

*   **Parametric Design:** I need to be able to easily change all of these dimensions by modifying variables defined at the top of the file. I would also like the $fn variable to be controllable.

So, in essence, I'm looking for a parametric OpenSCAD design that generates a print-in-place hinge with adjustable plate dimensions, barrel size, tolerance, rounded edges, and cone/socket specifications. I'm happy to have it all in one file or split into a few files (such as a library for the bevels) but I will be using it all in a single project, it would just be for organizational purposes.

[Assistant]
Fidget_Hinge_v06.scad:
```
//How thick the plates of the hinge are
height = 5;
//How long the hinge is
width = 80;
//How far out the plates of the hinge stick out
depth = 10;
//How much space is left between the hinge parts
tolerance = 0.2;
//Enable or disable the rounded corners
enable_bevel = true;

module endParams(){} endParams();

// Generate param package used by the hinge
param = [
  32,       //$fn
  height,   //plateHeight
  width,    //plateWidth
  depth,    //plateDepth
  true,     //plateUse
  6,        //barrelMinWidth
  tolerance,//barrelAirGap
  0.3,      //coneWidthPercentage
  0.33,     //coneCutoffPercentage
  false,    //bevelToggle
  3         //bevelAmount
];

//Generate hinge

difference(){
    hinge(param);

    if (enable_bevel){
        translate([-width/2,-(depth+height+tolerance),height/2])
            bevelShape_edge(10, height);
        translate([width/2,-(depth+height+tolerance),height/2])
            bevelShape_edge(10, height);
        translate([-width/2,(depth+height+tolerance),height/2])
            bevelShape_edge(10, height);
        translate([width/2,(depth+height+tolerance),height/2])
            bevelShape_edge(10, height);
    }
}

//LIBRARIES BELOW THIS POINT that I pasted in
//They are custom an kind of bad, but it is what it is

// Epsiolon to avoid overlap
etao = 0.001;

module bevel_cube(bevelSize, squareSize, half=false, complexity=32){
    difference(){
        cube(squareSize, center=true);
        bevel_cubeEdges(bevelSize, squareSize, half, complexity);
    }

}

module bevel_cubeEdges(bevelSize, squareSize, half=false, complexity=32){
    //Summarize var
    ss=squareSize;
    bs=bevelSize;
    // Determine coordinate of edge, the rotation, and its length
    edgeCoords = [
        //Bottom edge
        [ss.x/2,0,-ss.z/2],
        [-ss.x/2,0,-ss.z/2],
        [0,ss.y/2,-ss.z/2],
        [0,-ss.y/2,-ss.z/2],
        //Top edge
        [ss.x/2,0,ss.z/2],
        [-ss.x/2,0,ss.z/2],
        [0,ss.y/2,ss.z/2],
        [0,-ss.y/2,ss.z/2],
        //Vertical edges
        [ss.x/2,ss.y/2,0],
        [ss.x/2,-ss.y/2,0],
        [-ss.x/2,ss.y/2,0],
        [-ss.x/2,-ss.y/2,0]
    ];
    rotAngle = [
        //Bottom edge
        [90,0,0],
        [90,0,0],
        [0,90,0],
        [0,90,0],
        //Top edge
        [90,0,0],
        [90,0,0],
        [0,90,0],
        [0,90,0],
        //Vertical edges
        [0,0,0],
        [0,0,0],
        [0,0,0],
        [0,0,0]
    ];
    edgeLen = [ss[1],ss[1],ss[0],ss[0],ss[1],ss[1],ss[0],ss[0],ss[2],ss[2],ss[2],ss[2]];

    // Create edges
    loopStart = half ? 4 : 0;
    for (i=[loopStart:len(edgeCoords)-1]) {
        translate(edgeCoords[i]) rotate(rotAngle[i]) bevelShape_edge(bs, edgeLen[i]);
    }
}

// Create a circular bevel piece (for cylinder ends)
*bevelShape_circle(20, 40);
module bevelShape_circle(bevelSize, circleSize, complexity=32){
    $fn=complexity;
    //translate([-bevelSize/2,-bevelSize/2])
    rotate_extrude(angle=360)
    translate([circleSize/2,0])
    bevelShape(bevelSize, complexity);
}

// Create a rounded 90 degree corner bevel piece
*bevelShape_corner(20);
module bevelShape_corner(size, complexity=32){
    $fn=complexity;
    translate([-size/2,-size/2])
    rotate_extrude(angle=90)
    translate([size/2,0])
    bevelShape(size, complexity);
}

// Create a straight edge bevel shape
*bevelShape_edge(20,80);
module bevelShape_edge(size, length, complexity=32){
    $fn=complexity;
    linear_extrude(length+etao, center=true)
    bevelShape(size, complexity);
}

// Creates a rounded + shape used to difference out beveled edges
module bevelShape(size, complexity=32){
    $fn=complexity;
    //Create basic 2d shape for bevel.
    difference(){
        //Square
        rotate(45)
        square(size/sqrt(2), center=true);
        //Circle x 4 cut out of square
        r = size/2;
        l = [[r,r],[-r,r],[r,-r],[-r,-r]];
        for (i=[0:3]){
            translate(l[i])
            circle(r);
        }
    }
}

//END Bevel LIBRARY

//Start hinge library
// Modle that creates a hinge
// Note: Bevel toggle does not work with plates. Make your own plate if you bevel
// Example param object
//param = [
//  32,    //$fn
//  5,     //plateHeight
//  70,    //plateWidth
//  10,    //plateDepth
//  true,  //plateUse
//  6,     //barrelMinWidth
//  0.4,   //barrelAirGap
//  0.3,   //coneWidthPercentage
//  0.33,  //coneCutoffPercentage
//  false, //bevelToggle
//  3      //bevelAmount
//];
// See their usage below for explanations of each var
module hinge(param){
    $fn = param[0];

    // How tall (thick) the plate will be. Hinge width will be 2x this
    plateHeight = param[1];
    // How wide across the hinge is
    plateWidth = param[2];
    // How deep the plate is/how much it sticks out from the hinge
    plateDepth = param[3];
    // To include a plate or not
    plateUse = param[4];

    // The minimum size a barrel of the hinge can be.
    barrelMinWidth = param[5];
    // The amount of gap left between two sections of hinge
    barrelAirGap = param[6];

    // Determine cone width as a percentage of the barrelMinWidth
    coneWidthPercentage = param[7];
    // If the cone comes to a point. 0.01 is a point, 1.0 is a barrel
    coneCutoffPercentage = param[8];

    // If a bezel is applied around hinge/plate
    bevelToggle = param[9];
    // How much of a bevel in mm
    bevelAmount = param[10];

    // Amount of extra size givne to objects to ensure clean cuts
    eps = 0.001;

    // Create hinge plates. Hinge goes between these
    if (plateUse){
        yOffset_plate = plateDepth/2;
        yOffset_barrels = plateHeight + barrelAirGap;
        yOffset = yOffset_plate + yOffset_barrels;
        translate([0,yOffset,0])
        plate(plateDepth);
        translate([0,-yOffset,0])
        plate(plateDepth);

    }

    // Create barrels for hinge (without cone/socket)
    // Determine gap spacing between barrels for air and for the cones
    // barrelGap is synonymous with "cone/socket height"
    barrelGap = (barrelMinWidth * coneWidthPercentage);
    gapWidth = barrelGap + barrelAirGap;
    // Calculate the number of barels. Must be odd, must be at least barrelMinWidth wide
    barrelCount_start = floor((plateWidth+gapWidth) / (barrelMinWidth+gapWidth));
    barrelCount = barrelCount_start % 2 ? barrelCount_start : barrelCount_start-1;
    // Determine how wide the barrels need to be given the count
    gapCount = barrelCount - 1;
    //barrelWidth = (x * barrelCount) + (gapWidth + gapCount);
    barrelWidth = (plateWidth-(gapWidth * gapCount)) / barrelCount;
    // Generate and space barrels
    bcOffset = ((barrelWidth+gapWidth) * (barrelCount-1)) / 2;
    if (bevelToggle){
        difference(){
            //barrels
            union(){
                for (i=[0:barrelCount-1]){
                    translate([((barrelWidth+gapWidth)*i) - bcOffset,0,0])
                    barrel(barrelWidth);
                }
            }
            //barrel bezels
            translate([plateWidth/2,0,plateHeight])
            rotate([0,90,0])
            bevelShape_circle(bevelAmount, plateHeight*2);
            translate([-plateWidth/2,0,plateHeight])
            rotate([0,90,0])
            bevelShape_circle(bevelAmount, plateHeight*2);
        }
    } else {
        for (i=[0:barrelCount-1]){
            translate([((barrelWidth+gapWidth)*i) - bcOffset,0,0])
            barrel(barrelWidth);
        }
    }

    //Create cones around barrels
    for (i=[0:2:barrelCount-2]){
        offsetFromBarrelCenter = barrelWidth/2 + barrelGap/2;
        offsetFromWorldStartPoint = ((barrelWidth+gapWidth)*(floor(barrelCount/2)));
        offsetFromWorldCenter = ((barrelWidth+gapWidth)*i) - offsetFromWorldStartPoint;
        offset = offsetFromWorldCenter + offsetFromBarrelCenter;
        translate([offset,0,0])
        cone(true);
        translate([-offset,0,0])
        cone(false);
    }

    //Create sockets around barrels
    for (i=[1:2:barrelCount-2]){
        //offsetFromBarrelCenter = barrelWidth;
        //offsetFromWorldCenter = ((barrelWidth+gapWidth)*i) - (plateWidth/2);
        //offset = offsetFromWorldCenter + offsetFromBarrelCenter;
        offsetFromBarrelCenter = barrelWidth/2 + barrelGap/2;
        offsetFromWorldStartPoint = ((barrelWidth+gapWidth)*(floor(barrelCount/2)));
        offsetFromWorldCenter = ((barrelWidth+gapWidth)*i) - offsetFromWorldStartPoint;
        offset = offsetFromWorldCenter + offsetFromBarrelCenter;
        translate([offset,0,0])
        socket(true);
        translate([-offset,0,0])
        socket(false);
    }

    //Create tabs that attach barrels to plates (smaller)
    tabDepth = plateHeight + barrelAirGap;
    if (bevelToggle){
        difference(){
            //tabs
            union(){
                for (i=[0:2:barrelCount-1]){
                    //Little iffy on these 2 variables.
                    //I stole them from my own barrel for loop
                    xoFromCenter = ((barrelWidth+gapWidth) * (barrelCount-1)) / 2;
                    xoForWorld = ((barrelWidth+gapWidth)*i) - bcOffset;
                    translate([xoForWorld,tabDepth/2,0])
                    linear_extrude(plateHeight)
                    square([barrelWidth, tabDepth], center=true);
                }
            }
            //Bottom
            translate([plateWidth/2,tabDepth/2,0])
            rotate([90,0,0])
            bevelShape_edge(bevelAmount,tabDepth);
            translate([-plateWidth/2,tabDepth/2,0])
            rotate([90,0,0])
            bevelShape_edge(bevelAmount,tabDepth);
            //top
            translate([plateWidth/2,tabDepth/2,plateHeight])
            rotate([90,0,0])
            bevelShape_edge(bevelAmount,tabDepth);
            translate([-plateWidth/2,tabDepth/2,plateHeight])
            rotate([90,0,0])
            bevelShape_edge(bevelAmount,tabDepth);
        }
    } else {
       for (i=[0:2:barrelCount-1]){
            //Little iffy on these 2 variables.
            //I stole them from my own barrel for loop
            xoFromCenter = ((barrelWidth+gapWidth) * (barrelCount-1)) / 2;
            xoForWorld = ((barrelWidth+gapWidth)*i) - bcOffset;
            translate([xoForWorld,tabDepth/2,0])
            linear_extrude(plateHeight)
            square([barrelWidth, tabDepth], center=true);
        }
    }

    //Create tabs that attach barrels to plate (larger)
    for (i=[1:2:barrelCount-2]){
        //Little iffy on these 2 variables. I stole them from my own barrel for loop
        xoFromCenter = ((barrelWidth+gapWidth) * (barrelCount-1)) / 2;
        xoForWorld = ((barrelWidth+gapWidth)*i) - bcOffset;
        tabDepth = plateHeight + barrelAirGap;
        difference(){
            translate([xoForWorld,-tabDepth/2,0])
            linear_extrude(plateHeight)
            square([barrelWidth+barrelGap*2, tabDepth], center=true);
            translate([xoForWorld,0,0])
            barrel(barrelWidth+barrelGap*2+eps);
        }
    }

    // Create and position an individual plates
    module plate(depth){
        linear_extrude(plateHeight)
        square([plateWidth, depth], center=true);
    }

    // Create a barrel core for the hinge
    module barrel(h){
        translate([0,0,plateHeight])
        rotate([0,90,0])
        linear_extrude(h, center=true)
        circle(r=plateHeight);
    }

    // Create a cone for 1 set of barrels
    module cone(flip=false, epsilon=false){
        r = flip ? [0,90,0] : [0,-90,0];
        epsOffset = epsilon ? eps : 0;
        translate([0,0,plateHeight])
        rotate(r)
        linear_extrude(
            height=barrelGap + epsOffset,
            scale=[coneCutoffPercentage,coneCutoffPercentage],
            center=true
        )
        circle(r=plateHeight);
    }

    // Create sockets for the cones to go into on the other set of barrels
    module socket(invert=false){
        flipAngle = invert ? [0,0,180] : [0,0,0];
        rotate(flipAngle)
        difference(){
            translate([0,0,plateHeight])
            rotate([0,90,0])
            linear_extrude(height=barrelGap, center=true)
            circle(r=plateHeight);
            cone(true, true);
        }
    }
}

// END HINGE LIBRARY
```


[User]
Hey there, I'm looking to design a customizable measuring spoon lid for standard jars, and I'd like to use OpenSCAD to make it parametric. The basic idea is to have a lid with a built-in measuring spoon that attaches via a little pole/arm. The user should be able to choose the size of the measuring spoon, and adjust some key parameters to suit their needs.

Here's what I'm thinking for the design:

**Core Components:**

1.  **Lid Cap:** The main part of the lid that screws onto a jar. It needs a lip to securely attach to the jar, and also needs an opening to allow spices out. The user should be able to control the radius, lip height, and thickness of the lid.
2.  **Spice Holes:** Holes on the top of the lid allowing for spices to pass through to the measuring spoon. The user should be able to control the radius, number of rows, and holes per row.
3.  **Measuring Spoon Attachment:** This is the actual measuring spoon. It's a semi-sphere that's connected to the lid by an arm. I need to make this in a way where you can choose from a selection of US measurements. These include tablespoon (tbsp), ½ tbsp, teaspoon (tsp), and ½ tsp.
4.  **Attachment Arm:** This should be a rigid pole connecting the measuring spoon and the lid. I also need a sort of connector for the arm where it attaches to the lid.

**Parametric Options:**

Here are the user-configurable parameters I'm hoping for:

*   `printer_tolerance`: Allows for adjusting clearances due to printer inaccuracies.
*   `pole_additional_tolerance`: Allows for more specific tolerance adjustments on the attachment pole between the lid and spoon.
*   `part_thickness`: This should globally control the thickness of most of the parts of the lid and measuring spoon, so that the user can tune the overall sturdiness.
*   `lid_radius`: The radius of the main lid part.
*   `lid_cap_lip_height`: The height of the lip on the lid that screws onto the jar.
*  `spice_hole_radius`: The radius of the spice holes.
*   `spice_hole_rows`: The number of rows of spice holes.
*   `spice_holes_per_row`: The number of spice holes in each row.
*  `measuring_spoon_type`: Should be a dropdown menu of `"0_TBSP"`, `"1_HALF_TBSP"`, `"2_TSP"`, and `"3_HALF_TSP"`.
*  `additional_pole_connector_degrees`: Number of degrees to use for the connector. This should be between [0, 180].
*  `part_to_show`: String option `"LID_CAP"`, `"MEASURING_SPOON_ATTACHMENT"`, or `"BOTH"` that specifies what to render.
* `preview_attachment`: Boolean that specifies whether or not to show an outline of the measuring spoon attachment when viewing the lid.
*  `part_spacing`: Spacing between the lid and spoon when the option "BOTH" is chosen for the variable `part_to_show`.

**Design Specifics:**

*   The attachment arm should be made of a pole and a sort of rectangular based connector. This rectangular connector should have a rounded opening that attaches to the pole.
*   The spice holes should be placed in a circle and centered about the center of the lid, and the holes' angles should be calculated such that they are spread evenly within a circle described by the radius of the measuring spoon.
*   The measuring spoon should have a semi-spherical shape.
*   The connection between the pole and the measuring spoon attachment should be on the "back" of the semi-sphere. This position should be relative to the center of the lid.

**Libraries:**

I don't expect any specific external libraries to be required, but if it makes it simpler, you're free to use whatever might make sense.

Can you generate the OpenSCAD files for this? I think having it split into multiple modules might make it easier to read and customize. Thanks!

[Assistant]
measuring_spoon_lid.scad:
```
//ALL MEASUREMENTS ARE IN MM
//Conversion functions

function us_tablespoon_volume(n) = n * 14786.7648; //Approximation
function us_teaspoon_volume(n) = n * 4928.92159; //Approximation
//(4/3) * pi * r^3 / 2 = volume in mm^3
function measurement_radius(v) = 0.78159 * v^(1/3); //Approximation

//Constants

$fn = 100 + 0; //Adding 0 takes it out of the customizer
MEASURMENT_RADIUSES = [
  ["0_TBSP", measurement_radius(us_tablespoon_volume(1))],
  ["1_HALF_TBSP", measurement_radius(us_tablespoon_volume(0.5))],
  ["2_TSP", measurement_radius(us_teaspoon_volume(1))],
  ["3_HALF_TSP", measurement_radius(us_teaspoon_volume(0.5))]
];

//User variables

printer_tolerance = 0.15;
pole_additional_tolerance = 0.05;
//Makes the connection tighter on the pole
additional_pole_connector_degrees = 45; //[0:180]
part_to_show = "BOTH"; //["LID_CAP", "MEASURING_SPOON_ATTACHMENT", "BOTH"]
preview_attachment = true;
measuring_spoon_type = "2_TSP"; //["0_TBSP", "1_HALF_TBSP", "2_TSP", "3_HALF_TSP"]
part_thickness = 3;
lid_radius = 20.5;
lid_cap_lip_height = 12;
spice_hole_radius = 2.85;
spice_hole_rows = 1;
spice_holes_per_row = 3;
part_spacing = 10;

//Global variables
//Lookup inner_radius via hacky version of a dictionary
measuring_spoon_inner_radius = MEASURMENT_RADIUSES[search(measuring_spoon_type[0], MEASURMENT_RADIUSES)[0]][1];
measuring_spoon_outter_radius = measuring_spoon_inner_radius + part_thickness;
measuring_spoon_outter_diameter = measuring_spoon_outter_radius * 2;
measuring_spoon_connector_length = measuring_spoon_outter_diameter - 2 * part_thickness;
distance_from_center_to_center_of_measuring_spoon = measuring_spoon_outter_radius + part_thickness * 1.5;
lid_cap_radius = lid_radius + part_thickness + printer_tolerance;

module measuring_spoon_attachment() {
  translate([ measuring_spoon_outter_radius, measuring_spoon_outter_radius, 0 ]) {
    union() {
      //Measuring spoon
      difference() {
        sphere(r=measuring_spoon_outter_radius);
        sphere(r=measuring_spoon_inner_radius);
        translate([ 0, 0, -measuring_spoon_outter_diameter / 2 ])
          cube(measuring_spoon_outter_diameter, center=true);
      }
      //Pole base
      difference() {
        //Make a rectangular base in x direction
        translate([ -measuring_spoon_outter_radius, -measuring_spoon_outter_radius, 0 ])
          cube([
            measuring_spoon_outter_diameter,
            measuring_spoon_outter_diameter, part_thickness
          ]);
        //Cut out outter shell
        sphere(r=measuring_spoon_outter_radius);
        //Remove front half
        translate([ -measuring_spoon_outter_radius, -measuring_spoon_outter_radius, 0])
          cube([ measuring_spoon_outter_radius, measuring_spoon_outter_diameter, part_thickness ]);
      }
      //Pole base arm 1
      translate([
        measuring_spoon_outter_radius + part_thickness,
        -measuring_spoon_outter_radius,
        part_thickness
      ])
        cube([ part_thickness, part_thickness, part_thickness ]);
      translate([
        measuring_spoon_outter_radius,
        -measuring_spoon_outter_radius,
        0
      ])
        cube([ part_thickness * 2, part_thickness, part_thickness ]);
      //Pole base arm 2
      translate([
        measuring_spoon_outter_radius + part_thickness,
        measuring_spoon_outter_radius - part_thickness,
        part_thickness
      ])
        cube([ part_thickness, part_thickness, part_thickness ]);
      translate([
        measuring_spoon_outter_radius,
        measuring_spoon_outter_radius - part_thickness,
        0
      ])
        cube([ part_thickness * 2, part_thickness, part_thickness ]);
      //Pole
      pole_radius = part_thickness / 2 - printer_tolerance - pole_additional_tolerance;
      //Position at end of base + part_thickness * 2
      translate([
        measuring_spoon_outter_radius + pole_radius + part_thickness + printer_tolerance + pole_additional_tolerance,
        -measuring_spoon_outter_radius,
        pole_radius + part_thickness + printer_tolerance + pole_additional_tolerance
      ])
        rotate([ -90, 0, 0 ])
          cylinder(r=pole_radius, h=measuring_spoon_outter_diameter);
    }
  }
}

module measuring_spoon_attachment_connector() {
  union() {
    //Pipe with rounded opening
    translate([ part_thickness * 1.5, 0, part_thickness * 1.5 ]) {
      rotate([ 0, -90, -90 ]) {
        rotate([ 0, 0, 90 - additional_pole_connector_degrees / 2 ]) {
          //Opened Pipe
          rotate_extrude(angle=180 + additional_pole_connector_degrees)
            translate([ part_thickness / 2, 0, 0 ])
              square([ part_thickness, measuring_spoon_connector_length - printer_tolerance * 2 ]);
          //Rounded edge 1
          translate([ part_thickness, 0, 0 ])
            cylinder(h=measuring_spoon_connector_length - printer_tolerance * 2, r=part_thickness / 2);
          //Rounded edge 2
          translate([ sin(270 - additional_pole_connector_degrees) * (part_thickness), cos(270 - additional_pole_connector_degrees) * (part_thickness), 0 ])
            cylinder(h=measuring_spoon_connector_length - printer_tolerance * 2, r=part_thickness / 2);
        }
      }
    }
    //Rectangular base
    translate([ part_thickness * .5, 0, -printer_tolerance ])
      cube([ part_thickness * 2, measuring_spoon_connector_length - printer_tolerance * 2, part_thickness + printer_tolerance ]);
  }
}

if (part_to_show == "LID_CAP" || part_to_show == "BOTH") {
  translate([ lid_cap_radius, lid_cap_radius, lid_cap_lip_height + printer_tolerance ]) {
    union() {
      //Lid cap
      difference() {
        cylinder(h=part_thickness, r=lid_cap_radius);
        //Subtract holes for spice to exit
        //Angle containing by measuring_spoon_inner_radius - spice_hole_radius
        angle = 2 * asin((measuring_spoon_inner_radius - spice_hole_radius) / lid_radius);
        //Starting angle is solved such that the hole cluster is centered at 0 degrees
        starting_angle = 90 - angle / 2;
        for (row = [0:spice_hole_rows - 1]) {
          for(i = [0:spice_holes_per_row - 1]) {
            current_angle = starting_angle + angle / (spice_holes_per_row - 1) * i;
            current_radius = lid_radius - spice_hole_radius - 3 * spice_hole_radius * row;
            translate([
              sin(current_angle) * current_radius,
              cos(current_angle) * current_radius,
              0
            ])
              cylinder(h=part_thickness, r=spice_hole_radius);
          }
        }
      }
      //Add spoon attachment base
      translate([
        0,
        -(measuring_spoon_connector_length  - printer_tolerance * 2) / 2,
        -lid_cap_lip_height - printer_tolerance
      ]) {
        difference() {
          cube([
            lid_cap_radius + part_thickness * 3,
            measuring_spoon_connector_length - printer_tolerance * 2,
            part_thickness + lid_cap_lip_height + printer_tolerance
          ]);
          translate([
            0,
            (measuring_spoon_connector_length - printer_tolerance * 2) / 2,
            0
          ])
            cylinder(h=part_thickness + lid_cap_lip_height + printer_tolerance, r=lid_cap_radius);
        }
      }
      //Add spoon attachment connector
      translate([
        lid_cap_radius,
        -(measuring_spoon_connector_length - printer_tolerance * 2) / 2,
        part_thickness + printer_tolerance
      ])
        measuring_spoon_attachment_connector();
      //Lid cap lip
      translate([ 0, 0, -lid_cap_lip_height - printer_tolerance ]) {
        difference() {
          cylinder(h=lid_cap_lip_height + printer_tolerance, r=lid_cap_radius);
          cylinder(h=lid_cap_lip_height + printer_tolerance, r=lid_cap_radius - part_thickness);
        }
      }
    }
    //Hologram of where measuring spoon will attach
    if ($preview && preview_attachment) {
      translate([
        lid_cap_radius - 2 * distance_from_center_to_center_of_measuring_spoon + part_thickness * 3,
        -measuring_spoon_connector_length / 2 - part_thickness,
        part_thickness + printer_tolerance
      ])
        rotate([ 0, 0, 0 ])
          color("white", 0.25)
            measuring_spoon_attachment();
    }
  }
}

if (part_to_show == "MEASURING_SPOON_ATTACHMENT")
    measuring_spoon_attachment();

if (part_to_show == "BOTH")
  translate ([ 0, lid_cap_radius * 2 + part_spacing, 0 ])
    measuring_spoon_attachment();
```


[User]
Hi! I'd like to design a test tube holder for some plant cuttings I'm propagating. I have some herbs that came in test tubes, and I'd like to reuse them for this purpose.

I need a parametric OpenSCAD file that will let me customize the dimensions for the holder. I'm looking for a basic cube shape with a hole in the top to hold the test tube. It should also have a cutaway in the front so I can easily see the contents.

Here are the parameters I'd like to be able to control:

*   `laenge`: The length of the cube
*   `hoehe`: The height of the cube
*   `breite`: The width of the cube
*   `glas`: The diameter of the test tube
*   `toleranz`: The tolerance for the test tube hole (to make sure it fits)
*   `auschnitt`: The width of the front cutaway

The test tube hole should be centered on the top face of the cube and go most of the way through, but not all the way to the bottom. The front cutaway should be rectangular, starting about halfway up the height of the cube, and should extend into the center of the cube towards the test tube hole. It should also be centered along the length of the cube.

I was trying to build it myself, but I was having a hard time with the cutaway and making sure it worked when the tube diameter is small. I would also like to be able to customize the test-tube hole to have a sphere at the bottom, which is a nice aesthetic touch.

I’m pretty new to this, but if possible it would be nice if the code was well commented.

Thanks in advance!

[Assistant]
test-tube-holder_v2.scad:
```
// Based on: https://www.thingiverse.com/thing:2773490
//
// SPDX-License-Identifier: CC-BY-NC-SA-4.0
// Copyright 2018 Ivo Meier <https://www.thingiverse.com/ivorness>
// Copyright 2022 Casper Meijn <casper@meijn.net>
// To view a copy of this license, visit http://creativecommons.org/licenses/by-nc-sa/4.0/

// Length of the cube:
laenge = 40; // [10:100]
// heigth of the cube:
hoehe = 50; // [10:100]
// heigth of the cube:
breite = 40; // [10:100]
// diameter of the glass
glas = 20; //[10:60]

toleranz = 0.25;
// cut (front):
auschnitt = 13; //[8:100]

// Basis-Rechteck
difference()
{

    cube([ laenge, breite, hoehe ]);

    union()
    {
        translate([ laenge / 2, breite / 2, hoehe / 3 ])
            cylinder(h = hoehe, d1 = glas + toleranz, d2 = glas + toleranz, $fn = 96);
        translate([ laenge / 2, breite / 2, hoehe / 3 ]) sphere(d = glas + toleranz, $fn = 96);

        translate([ laenge / 2 - auschnitt / 2, -10, hoehe / 2.5 ]) cube([ auschnitt, breite / 1.5, hoehe ]);

        translate([ laenge / 2, breite / 2, hoehe / 2.5 ]) rotate([ 90, 0, 0 ])
            cylinder(h = hoehe, d1 = auschnitt, d2 = auschnitt, $fn = 96);
    }
}
```


[User]
I'd like to design a customizable container in OpenSCAD. I need it to be parametric so I can adjust the interior height and diameter. I’d also like the option to include a decorative ring around the base. The container should have a threaded lid.

Specifically, the container should have a cylindrical body, with the inside dimensions controlled by `inside_height` and `inside_diameter`. The decorative ring, when enabled via a `include_ring` parameter, should be a short cylinder with some decorative extrusions around the outside, located at the base.

The lid should have a matching thread to the container, so it can screw on. It should also have some decorative extrusions around the outside to make it easy to grip.

I envision the use of parameters like `inside_height`, `inside_diameter`, and `include_ring` to control the container's basic dimensions and the presence of the ring, respectively. The values for each of these should be customizable.

For now, I don't have any specific material thickness requirements beyond what you see in the example code I was working with, which I am not including directly because I don't expect you to reuse any of it. I’d like a default for `include_ring` to be 0. I’d like to control the smoothness of the curves with `$fn` and the cylinder's parameters should be controlled using a `r` and `h` parameter combination. I don’t expect you to use any special modules for thread generation or any additional libraries.

[Assistant]
texture_container_3.scad:
```
inside_height=47;//[26.7:2.9:192]
inside_diameter=23;//[10:1:87]
include_ring=0;//[0,1]

container(inside_height,inside_diameter);

cap(inside_diameter);

if(include_ring==1)
ring(inside_diameter);

module container(inside_height,id){
sc=(id+7)/(23+7);
n1=round((inside_height-14)/2.9);;
th=(n1-1)*2.9+6.0;
echo(n1);
$fn=70;
difference(){
union(){
cylinder(r=id/2+4.5,h=th+0.1);
//top and bottom
for(t=[0,th])
translate([0,0,t])
difference(){
cylinder(r=id/2+6,h=5);
for(b=[0,5])
translate([0,0,b])
rotate_extrude()
translate([id/2+6,0])
circle(r=1,$fn=4);
}

//scales
for(j=[0:n1-1])
for(i=[0:15])
rotate([0,0,i*22.5+j*11.25])
translate([id/2+3.5,0,4.9+2.9*j])
rotate([0,75,0])

scale([1,sc,1])
union(){
cylinder(r=3.05,h=1,$fn=20);
cylinder(r=1.2,h=1.6,$fn=20);
}

//threads
difference(){
translate([0,0,th+4.9])
linear_extrude(height=9.1,twist=-9.1*144)
translate([0.5,0])
circle(r=id/2+2);

translate([0,0,th+14])
rotate_extrude()
translate([id/2+2.5,0])
circle(r=1.5,$fn=4);
}
}
translate([0,0,2])
cylinder(r=id/2,h=th+13);
}
}

module cap(id){
$fn=60;
translate([id+14,0,0])
difference(){
cylinder(r=id/2+6,h=11);

translate([0,0,2])
linear_extrude(height=9.1,twist=-9.1*144)
translate([0.5,0])
circle(r=id/2+2.3);

translate([0,0,9.5])
cylinder(r1=id/2+1.5,r2=id/2+3.1,h=1.6);

translate([0,0,11])
rotate_extrude()
translate([id/2+6,0])
circle(r=1,$fn=4);

rotate_extrude()
translate([id/2+6,0])
circle(r=2,$fn=4);

for(i=[0:15])
rotate([0,0,22.5*i])
translate([0,id/2+6,6])
rotate([90,0,0])
cylinder(r1=1.7,r2=1.2,h=1,$fn=6);
}
}

module ring(id){
$fn=90;
translate([0,id+14,0])
difference(){
cylinder(r=id/2+6,h=2);

translate([0,0,-0.1])
linear_extrude(height=2.2,twist=-2.2*144)
translate([0.5,0])
circle(r=id/2+2.3);
}
}
```