[User]
Hey, I'm looking for a customizer-based OpenSCAD design for a model rocket transition, something similar to what I've been using, but I want to make sure it's as flexible as possible. I've been using "Transition_Conical_Shoulder_Customizer_V2.scad", but I'd like to move away from this specific code base.

Here's what I need:

**Core Functionality:**

*   The design should create a conical transition between two different diameters, with shoulders at both ends for attaching to body tubes.
*   It *must* be set up with the OpenSCAD Customizer in mind so I can easily tweak the parameters.
*   I'd like options to add cylindrical sections before and after the conical part.
*   Instead of always using a shoulder on the smaller diameter end, I'd also like to have the option for a 'socket' to fit over a body tube instead.

**Attachment Options (These should be mutually exclusive):**

*   **Shock Cord Attachment:** I want inset loops (like "pig-snouts") on both shoulders. These will be for attaching a shock cord. This should be optional.
*   **Screw Attachment:** Optionally, I want to have center holes in the shoulders for attaching with screws. This should be optional, and incompatible with inset loops.
*   **Through Duct:** I need to have the *option* to create an empty duct through the whole transition for gas flow or weight reduction. If this is chosen, shock cord attachments and screw attachments should not be an option. The diameters of the duct at each end should be individually adjustable. If the 'socket' option is used, the duct should extend through the socket.

**Other Important Options:**

*   **Shoulder Bevel:** I need an option to add a bevel on the edges of the shoulders so it's easier to insert them into body tubes.
*   **Print Support:** An option to include a support ring for the lower shoulder rim during printing.
*   **Cross-Sectional Views:** Very important -  options to view a 3/4 or 1/2 cross-section to make it easier to adjust parameters. This is for development only, of course; these features need to be easily toggled off for final rendering.

**Customizer Organization:**

I'd like to have the customizer organized logically. Perhaps something like:

*   A tab for "Cross-Sectional Views" (with checkboxes for 3/4 and 1/2 section views).
*   A tab for "Transition Body Parameters" (for diameters and lengths).
*   A tab for "Upper and Lower Shoulder Parameters" (for shoulder lengths, diameters, bevels).
*   A tab for "Shoulder Attachment Parameters" (for loops, screw holes).
*    A tab for "Through Duct Parameters" if applicable.
*   A tab for "Upper Shoulder Socket Parameters" for switching to socket and socket parameters
*   A tab for "Render Smoothness" to adjust the $fn of different parts.
*   A tab for "Optional Lower Rim Support"

It would be great to include some comments in the code to help me understand how it all works, and the console output, particularly of the calculated transition angle is really useful.

Also please make it robust; there should be some error checking to make sure I don't create nonsensical shapes. Specifically:
- There should be some error checking to avoid negative lengths of any sections
- The duct diameter should not be bigger than the shoulder diameter at either end
- The socket depth should be checked as well
- Shoulders and socket cannot both exist on the same end.
- Loop, screw, and ducted options should be mutually exclusive.

I don't need to be able to input tube dimensions (like the body tube chart I included). I'm fine figuring out how to set those values myself for printing and fitting tubes, so I'm not really concerned with any libraries related to those.

I think that covers it all. Thanks!

[Assistant]
Transition_Conical_Shoulder_Customizer_V2.scad:
```
//=======================================================================================================
// CONICAL TRANSITION GENERATOR   Gary A. Crowell Sr.
//
//    *** work in progress ***    1/30/2017
//    *** altered to use OpenSCAD Customizer *** 9/16/2018
//		Creative Commons Attribution-ShareAlike   https://creativecommons.org/licenses/by-nc/4.0/
//=======================================================================================================
//    FEATURES:
//      * Conventional upper and lower shoulders.
//      * Optional inset smooth shock chord attachment point.
// 		* Optional center holes for screw attachment.
//      * Optional ducted through version for gas flow or weight reduction.
//      * Optional cylindrical sections above or below the transition.
//      * Optional tube 'socket' instead of shoulder on smaller diameter end.
//      * Optional shoulder edge bevel.
//      * Available print support for transition/shoulder rim.
//      * Available cross-section or 3/4 views to veiw internal structure for development.
//=======================================================================================================

// Conventions:
//		* The 'upper' shoulder is always the smaller one; the lower is the larger.  This is the way the
//		  shoulder would normally be printed (even if you actually use it the other way around).
//		* Shoulder diameters (DIA) should be adjusted for slip fitting in the intended tube, which should
//		  be slightly smaller than the published OD.  This may also require adjustment for the particular
//		  printer used.

/*
================== Transition Conical Shoulder V2 OpenSCAD Customizer ===================================
This file has been adjusted to enable use of the OpenSCAD 'Customizer', which allows the
use of Windows-style selection tools to set parameters of the component.  The use of this
feature requires the following steps:

1.  You must be using the OpenScad 'Development Snapshot' version, available at:
    http://www.openscad.org/downloads.html
    Scroll down to Development Snapshots,  use version OperSCAD 2018.09.05 or later.

2.  Open this file with OpenSCAD.

3.  In the OpenSCAD [Edit] menu, select [Preferences] then open tab [Features], check
    [Customizer], then close the window when the check is shown.

4.  In the OpenSCAD [View] menu, uncheck the option [Hide Customizer].  The Customizer
    window should open at the right side of the screen.

5.  At the top of the Customizer window, check 'Automatic Preview' and select 'Show Details'
    in the dropdown box.

6.  If you are comfortable with the descriptions of the variables (detailed below), then also
    in the [View] menu, you can check the option [Hide editor], which will allow the full screen
    to view the model.  You can also check to [Hide Console].

====== Using the Transition Conical Shoulder Customizer V2.scad file with the Customizer =======

With the above steps completed, the customizer window should be visible at the right side
of the OpenSCAD window, with the following controls available.  Note that while there is some
input parameter checking, it is totally possible to create 'impossible' inputs that will
render garbage or possibly crash OpenSCAD.  Adjust parameters one at a time and carefully
view the results of each adjustment.

> Under the 'Cross-Sectional Views' Tab you may select to view a 3/4 or 1/2 section view
  of the transition.  These views are very useful when adjusting parameters.  Note that you
  must remember to disable these views before creating an .stl file - you will get what you
  see.

> The 'Transition Body Parameters' Tab sets the basic dimensions of the exposed surface
  (i.e., excluding the shoulders) of the transitions.  An optional cylindrical section
  may be added above and/or below the conical transition section.

> The 'Upper and Lower Shoulder Parameters' Tab is used to define the diameter and length
  of the upper and lower shoulders.  An optional bevel may be enabled for each shoulder.
  The bevel makes insertion into a tube easier.

> The 'Shoulder Attachment Parameters' Tab is used to define the method of attachment,
  if any, to the upper and lower shoulders.  Either an inset loop, or a hole for a screw
  eye may be defined.  The inset loop height and width may need careful adjustment to
  properly fit within the shoulder.  Use of the 3/4 cross-section view is handy for this.

> Under the 'Through Duct Parameters' Tab, an internal through cavity may be defined. Use
  of a duct precludes any upper or lower shock cord attachment.  With the proper settings,
  a duct may be used with an upper socket.

> Under the 'Upper Shoulder Socket' Tab, an alternative method of fitting to the upper body
  tube may be enabled.  The tube may be 'socketed' rather than fitting over a shoulder.  This
  method may be preferable in some circumstances.  Use of a socket precludes the use of any
  upper shock cord attachment method.

> Under the 'Render Smoothness' Tab, sliders are available to adjust the smoothness of the
  outer surface, the inner surface, and the attachment loops.

> Under the 'Optional Lower Rim Support' Tab, enaable and set parameters for a print support
  ring for the lower shoulder rim.  It works, give it a try.
  will require less rendering time.

> Note that if you enable the console window (under the [Vies] menu), certain calculated
  values of the transition may be viewed.  (It may be necessary to scroll up in this window
  to find the ECHO'ed values.)

*/

//////////////////////////////////////////////////////////////////////////////////////////////////////

/* [Cross-Sectional Views] */
// OPTIONAL RENDERING VIEWS FOR DEVELOPMENT ==========================================================
// Check to enable 3/4 view.
Three_Qtr_View = true;
// Check to enable cross-section view.
Cross_Section_View = false;
//============================================================================================

/* [Transition Body Parameters] */
Upper_Transition_Diameter_mm = 13.95; // [1:0.05:100]
Upper_Cylindrical_Length_mm = 2; // [1:0.1:100]
Transition_Conical_Length_mm = 5; // [1:0.1:100]
Lower_Cylindrical_Length_mm = 2; // [1:0.1:100]
Lower_Transition_Diameter_mm = 18.85; // [1:0.05:100]

/* [Upper and Lower Shoulder Parameters] */
Upper_Shoulder_Length_mm = 6;	// [1:0.25:100]
Upper_Shoulder_Diameter_mm = 13.0;// [1:0.1:100]
// Check to bevel edge of the upper shoulder:
Upper_Shoulder_Bevel = true;
Lower_Shoulder_Length_mm = 9;	// [1:0.25:100]
Lower_Shoulder_Diameter_mm = 17.8; // [1:0.1:100]
// Check to bevel edge of the lower shoulder:
Lower_Shoulder_Bevel = true;	// Set true to bevel the edge 45 deg (this is a small fixed % of diameter).

/* [Shoulder Attachment Parameters (Not Ducted)] */
// There are two basic variations of shoulder attachment method (plus none at all).  Only one selection
// may be set to 'true' (lower case).  Both may be 'false' for a plain shoulder.

// If loop attached, screw attach is not allowed.
Upper_Loop_Attach = true;	// Upper shoulder inset loop for attachment of shock cord ("pig-snout").
// The following parameters set the size of the 'pig-snout' (you'll see) loop attachment in a shoulder.
//   The scale is to adjust the basic fit for the shoulder diameter, and the scale height (scaleHT) may
//   require adjustment to avoid internal conflicts in the transition.
// Scale to fit the width of the upper loop:
Upper_Loop_W_Scale = 0.2;  	// [0:0.05:0.5]  For upper loopattach, adjust upper loopscale to fit shoulder diameter.  BT50-0.38; BT20-0.28
// Scale to fit the height of the upper loop:
Upper_Loop_H_Scale = 0.25; // [0:0.05:0.5]

// Upper shoulder center hole for screw attachment.
Upper_Screw_Attach = false;	// Upper shoulder center hole for screw attachment.
// If loop attached, screw attach is not allowed.
// Upper screw attach hole diameter, mm:
Upper_Screw_Diameter = 2;	// [0:0.1:5]
// If upper screw attach the screw hole diameter must be set.
Lower_Loop_Attach = true;	// Lower shoulder inset loop for attachment of shock cord ("pig-snout").
// Scale to fit the width of the lower loop:
Lower_Loop_W_Scale = 0.35;  // [0:0.05:0.5]
// For lower loopattach, adjust lower loopscale to fit shoulder diameter.  BT50-0.38; BT20-0.28
// Scale to fit the height of the lower loop:
Lower_Loop_H_Scale = 0.3; // [0:0.05:0.5]

// Lower shoulder center hole for screw attachment.
Lower_Screw_Attach = false;	// Lower shoulder center hole for screw attachment.
// Lower screw attach hole diameter, mm:
Lower_Screw_Diameter = 2; // [0:0.1:5] If lower screw attach the screw hole diameter must be set.

/* [Through Duct Parameters (No Attachment)] */
// Check for through transition duct:
Through_Ducted = false;		// No attachment up or down, but a flow-through duct for gasses
							// (or simply weight reduction).

Upper_Duct_Diameter_mm = 12; // [1:0.25:100]
Upper_Duct_Length_mm = 10; // [1:0.25:100]
Lower_Duct_Diameter_mm = 14; // [1:0.25:100]
Lower_Duct_Length_mm = 10; // [1:0.25:100]

/* [Upper Shoulder Socket] */
// Instead of an upper attachment or shoulder, a socket may be used for fitting the upper tube.
// A socket prohibits upper shoulder and cylindrical section.
Upper_Shoulder_Socket = false;			// No upper attachment, but an upper inset socket to fit the upper tube
							// (may be used with a duct, or any lower attachment).
//  Dimensions for an upper tube socket, if used.

Socket_Depth_mm = 5; // [0:0.25:100]
Socket_Inner_Diameter_mm = 14; // [0:0.05:100]

// Some delta larger than Upper_Transition_Diameter_mm, for an appropriate fit for the tube.

/* [Render Smoothness] */
// RENDERING SMOOTHNESS ====================================================================

Outside_Smoothness = 90;	// [15:15:150]
Inside_Smoothness = 30;   // [15:15:150]
Attachment_Loop_Smoothness = 30;	// [15:15:45]

/* [Optional Lower Rim Support] */
// OPTIONAL PRINTING SUPPORT (for edge of shoulder) ==================================================
// (I suggest you try it - I use it for all shoulders and it works very well for me, resulting in
// sharper shoulder rims.  It may require some adjustment for your situation though.)
Add_Support = false;			// set true to add support
Base_Ring_Width_mm = 1.5; // [0.1:0.05:5]
Base_Ring_Thickness_mm = 0.4; // [0.1:0.05:2]
Support_Wall_Thickness_mm = 0.1; // [0.1:0.05:2]
Support_Separation_mm = 0.75; // [0.1:0.05:2]
//============================================================================================

/* [Hidden] */

//=======================================================================================================
// BODY TUBE DATA ====================================================================================
//  Apogee Body Tubes																Practical
//														I.D			O.D.			I.D.		O.D.
//
//13mm x 18" Body Tube (Estes BT-5 size)	10063	6	0.518"		0.544"
//														(13.2mm)	(13.8mm)
//
//18mm x 18" Body Tube (Estes BT-20 size)	10086	6	0.71"		0.736"
//														(18mm)		(18.7mm)
//
//24mm x 18" Body Tube (Estes BT-50 size)	10100	6	0.95"		0.976"
//														(24.1mm)	(24.8mm)
//
//29mm x 13" Body Tube (Holds F&G Engines)			6	1.14"		1.176"
//														(29mm)		(29.9mm)
//
//33mm x 18" Body Tube (Estes BT-55 Size)	10131	6	1.283"		1.325"
//														(32.6mm)	(33.7mm)
//
//41mm x 18" Body Tube (Estes BT-60 Size)	10141	6	1.595"		1.6"				1.65"
//														(40.5mm)	(41.6mm)
//
//56mm x 18" Body Tube (Estes BT-70 size)	10164	4	2.18"		2.217"
//														(55.4mm)	(56.3mm)
//
//66mm x 18" Body Tube (Estes BT-80 size)	10198	4	2.558"		2.6"
//														(65mm)		(66mm)
//
//74mm x 18" Body Tube (Thin Wall 3" tube)			4	2.93"		3"
//														(74.4mm)	(76.2mm)
//===================================================================================================

// CHANGE THINGS BELOW THIS LINE AT YOUR OWN RISK ===================================================
//=======(I barely understand it myself.)============================================================

overallLENsoc = Lower_Shoulder_Length_mm+Lower_Cylindrical_Length_mm+Transition_Conical_Length_mm;
overallLEN = Lower_Shoulder_Length_mm+Lower_Cylindrical_Length_mm+Transition_Conical_Length_mm+Upper_Cylindrical_Length_mm+Upper_Shoulder_Length_mm;

// display input data in OpenSCAD console window
echo ("Lower Shoulder Len:        ", Lower_Shoulder_Length_mm);
if (Lower_Cylindrical_Length_mm > 0) {echo ("Lower Cylindrical Section: ", Lower_Cylindrical_Length_mm);}
echo ("Transition Length:         ", Transition_Conical_Length_mm);
echo ("Transition Angle:          ", atan (Transition_Conical_Length_mm/abs (Lower_Transition_Diameter_mm/2-Upper_Transition_Diameter_mm/2)), " degrees");
echo ("Upper Shoulder Len:        ", Upper_Shoulder_Length_mm);
if (Upper_Cylindrical_Length_mm > 0) {echo ("Upper Cylindrical Section: ", Upper_Cylindrical_Length_mm);}
echo ("Total Exposed Length:      ", Lower_Cylindrical_Length_mm+Transition_Conical_Length_mm+Upper_Cylindrical_Length_mm);
if (Upper_Shoulder_Socket == true) {
	echo ("Overall Length:            ", overallLENsoc);
} else {
	echo ("Overall Length:            ", overallLEN);
}

if (Upper_Transition_Diameter_mm >= 0) {
if ((Lower_Cylindrical_Length_mm >= 0) && (Upper_Cylindrical_Length_mm >= 0)) {
if (Socket_Depth_mm >= 0) {
if ((Upper_Shoulder_Length_mm >= 0) && (Lower_Shoulder_Length_mm >= 0)) {
if (Transition_Conical_Length_mm >= 0) {
if (Lower_Duct_Diameter_mm <= Lower_Shoulder_Diameter_mm) {
//if (((screwattach != true) && (loopattach != true) && (Through_Ducted != true)) ||
//		((screwattach == true) && (loopattach != true) && (Through_Ducted != true)) ||
//		((screwattach != true) && (loopattach == true) && (Through_Ducted != true)) ||
//		((screwattach != true) && (loopattach != true) && (Through_Ducted == true))) {

loopcutHT = 16; // height of loop cutout
loopcutLEN = 20; // length of loop cutout
loopcutRAD = 10;  // radius of loop cutout
baseopenRAD = 10; //radius of the rounded bottom opening

difference() {
	union () { // the basic shape, normal upper shoulder or socketed
		// lower shoulder
		cylinder (h = Lower_Shoulder_Length_mm, d = Lower_Shoulder_Diameter_mm, $fn=Outside_Smoothness);

		// lower cylindrical section
		translate ([0, 0, Lower_Shoulder_Length_mm-0.001])
			cylinder (h = Lower_Cylindrical_Length_mm, d = Lower_Transition_Diameter_mm, $fn=Outside_Smoothness);

		// conical transition section
		translate ([0, 0, Lower_Shoulder_Length_mm+Lower_Cylindrical_Length_mm-0.001])
			cylinder (h = Transition_Conical_Length_mm, d1 = Lower_Transition_Diameter_mm, d2 = Upper_Transition_Diameter_mm, $fn=Outside_Smoothness);

		if (Upper_Shoulder_Socket != true) { // normal upper (smaller) shoulder and upper cylindrical section
			// upper cylindrical section
			translate ([0, 0, Lower_Shoulder_Length_mm+Lower_Cylindrical_Length_mm+Transition_Conical_Length_mm-0.001])
				cylinder (h = Upper_Cylindrical_Length_mm, d = Upper_Transition_Diameter_mm, $fn=Outside_Smoothness);
			// upper (smaller) shoulder
			translate ([0, 0, Lower_Shoulder_Length_mm+Lower_Cylindrical_Length_mm+Transition_Conical_Length_mm+Upper_Cylindrical_Length_mm-0.001])
				cylinder (h = Upper_Shoulder_Length_mm, d = Upper_Shoulder_Diameter_mm, $fn=Outside_Smoothness);
		} // if not Upper_Shoulder_Socket
	} // union

	// all of the elements below are subtraced from the basic shape, depending on selected options

	// lower loop attach
	if ((Lower_Loop_Attach == true) && (Through_Ducted == false)) {
		loopcutout (Lower_Loop_W_Scale, Lower_Loop_H_Scale, loopcutHT, loopcutLEN, loopcutRAD, baseopenRAD);
	} // if lower loop attach

	// upper loop attach
	if ((Upper_Loop_Attach == true) && (Through_Ducted == false)) {
		translate ([0, 0, overallLEN-0.001]) rotate (a = [0, 180, 0])
			loopcutout (Upper_Loop_W_Scale, Upper_Loop_H_Scale, loopcutHT, loopcutLEN, loopcutRAD, baseopenRAD);
	} // if upper loop attach

	if ((Through_Ducted == true) && (Upper_Shoulder_Socket != true)) { // subtract duct if ducted and not socketed
		// lower (larger) duct vertical section
		translate ([0, 0, -0.001]) cylinder (h = Lower_Duct_Length_mm+0.002, d = Lower_Duct_Diameter_mm, $fn=Inside_Smoothness);
		// duct transition
		translate ([0, 0, Lower_Duct_Length_mm-0.001])
			cylinder (h = overallLEN-Lower_Duct_Length_mm-Upper_Duct_Length_mm+.002,
				d1 = Lower_Duct_Diameter_mm, d2 = Upper_Duct_Diameter_mm, $fn=Inside_Smoothness);
		// upper (smaller) duct vertical section
		translate ([0, 0, overallLEN-Upper_Duct_Length_mm-0.001])
			cylinder (h = Upper_Duct_Length_mm+0.002, d = Upper_Duct_Diameter_mm, $fn=Inside_Smoothness);
	} // if ducted and not socketed

	if ((Through_Ducted == true) && (Upper_Shoulder_Socket == true)) { // subtract duct if ducted and socketed
		// lower (larger) duct vertical section
		translate ([0, 0, -0.001]) cylinder (h = Lower_Duct_Length_mm+0.002, d = Lower_Duct_Diameter_mm, $fn=Inside_Smoothness);
		// duct transition
		translate ([0, 0, Lower_Duct_Length_mm-0.001])
			cylinder (h = overallLENsoc-Lower_Duct_Length_mm-Upper_Duct_Length_mm-Socket_Depth_mm+.002,
				d1 = Lower_Duct_Diameter_mm, d2 = Upper_Duct_Diameter_mm, $fn=Inside_Smoothness);
		// upper (smaller) duct vertical section
		translate ([0, 0, overallLENsoc-Upper_Duct_Length_mm-Socket_Depth_mm-0.001])
			cylinder (h = Upper_Duct_Length_mm+0.002, d = Upper_Duct_Diameter_mm, $fn=Inside_Smoothness);
	} // if ducted and socketed

	if (Upper_Shoulder_Socket == true) { // upper socket
		translate ([0, 0, overallLENsoc-Socket_Depth_mm])
			cylinder (h = Socket_Depth_mm+0.001, d = Socket_Inner_Diameter_mm,  $fn=Outside_Smoothness);
	} // if socketed

	// screw attachments
	if ((Lower_Screw_Attach == true) && (Through_Ducted == false)) {
		translate ([0, 0, -0.001]) cylinder (h = 0.45*overallLEN, d = Lower_Screw_Diameter,  $fn=Inside_Smoothness);
	} // if lower screw attach
	if ((Upper_Screw_Attach == true) && (Through_Ducted == false)) {
		translate ([0, 0, 0.55*overallLEN])
			cylinder (h = 0.5*overallLEN, d = Upper_Screw_Diameter,  $fn=Inside_Smoothness);
	} // if upper screw attach

	// bevel edge corner of lower shoulder
	if (Lower_Shoulder_Bevel == true ) {
		translate ([0, 0, 0 ]) difference() {
			translate ([0, 0, -0.01])
				cylinder (h = Lower_Shoulder_Length_mm, d = Lower_Shoulder_Diameter_mm+0.01, $fn = Outside_Smoothness);
			translate ([0, 0, +0.02])
				cylinder (h = Lower_Shoulder_Length_mm+1, d1 = 0.98*Lower_Shoulder_Diameter_mm,
					d2 = 1.4*Lower_Shoulder_Diameter_mm, $fn = Outside_Smoothness);
		} // difference
	} // if bevelentry
	// bevel edge corner of upper shoulder if not socketed
	if ((Upper_Shoulder_Bevel == true ) && (Upper_Shoulder_Socket != true)) {
	translate ([0, 0, overallLEN]) rotate (a = [0, 180, 0])
		translate ([0, 0, 0 ]) difference() {
			translate ([0, 0, -0.01])
				cylinder (h = Upper_Shoulder_Length_mm, d = Upper_Shoulder_Diameter_mm+0.01, $fn = Outside_Smoothness);
			translate ([0, 0, +0.02])
				cylinder (h = Upper_Shoulder_Length_mm+1, d1 = 0.98*Upper_Shoulder_Diameter_mm,
					d2 = 1.4*Upper_Shoulder_Diameter_mm, $fn = Outside_Smoothness);
		} // difference
	} // if bevelentry

	// sectional views
	if (Three_Qtr_View == true) {translate ([0, 0, -1])
		cube (size = [Lower_Transition_Diameter_mm+1, Lower_Transition_Diameter_mm+1, overallLEN+2]);} // 3/4 section
	if (Cross_Section_View == true) {translate ([-(Lower_Transition_Diameter_mm+1)/2, 0, -1])
		cube (size = [Lower_Transition_Diameter_mm+1, Lower_Transition_Diameter_mm+1, overallLEN+2]);} // cross section

} // difference

//} else { echo ("Mode Error"); sphere (d = 10); }
} else { echo ("Duct Diameter Error"); sphere (d = 10); }
} else { echo ("Transition Length Error"); sphere (d = 10); }
} else { echo ("Shoulder Length Error"); sphere (d = 10); }
} else { echo ("Socket Depth Error"); sphere (d = 10); }
} else { echo ("Cylinder Length Error"); sphere (d = 10); }
} else { echo ("Upper Tube Diameter Error"); sphere (d = 10); }

// ==================================================================================================
module loopcutout (loopscale, loopscaleHT, loopcutHT, loopcutLEN, loopcutRAD, baseopenRAD) {
// cutout for loop - subtract from any solid shoulder - adjust height

	translate ([0, 0, -0.01]) scale (v = [loopscale, loopscale, loopscaleHT]) {

		difference() {
			union () {
				// vertical section of loop channel
				translate ([0, -loopcutLEN/2-0.05, 0])
					cylinder (h = loopcutHT, r = loopcutRAD, $fn = Attachment_Loop_Smoothness*2.5);
				translate ([0, loopcutLEN/2+0.05, 0])
					cylinder (h = loopcutHT, r = loopcutRAD, $fn = Attachment_Loop_Smoothness*2.5);

				// upper loop of channel
				translate ([0, 0, loopcutHT-0.1]) rotate (a = [0, 90, 0]) rotate_extrude(convexity = 10)
					translate([loopcutRAD+0.1, 0, 0]) circle(r = loopcutRAD, $fn = Attachment_Loop_Smoothness*2.4);

				// 'nostril' of the snout
				difference() {
					translate ([0, loopcutLEN/2, -0.0])
						cylinder (h = baseopenRAD+0.02, r = baseopenRAD+loopcutRAD, $fn = Attachment_Loop_Smoothness);
					intersection () {
						translate ([0, loopcutLEN/2, -0.0])
							cylinder (h = baseopenRAD+0.02, r = baseopenRAD+loopcutRAD, $fn = Attachment_Loop_Smoothness);
						translate ([0, loopcutRAD, loopcutLEN/2]) rotate_extrude(convexity = 10)
							translate([loopcutRAD*2, 0, 0]) circle(r = loopcutRAD, $fn = Attachment_Loop_Smoothness);
					} // intersection
				} // difference
				// 'nostril' of the snout
				difference() {
					translate ([0, -loopcutLEN/2, -0.0])
						cylinder (h = baseopenRAD+0.02, r = baseopenRAD+loopcutRAD, $fn = Attachment_Loop_Smoothness);
					intersection () {
						translate ([0, -loopcutLEN/2, -0.0])
							cylinder (h = baseopenRAD+0.02, r = baseopenRAD+loopcutRAD, $fn = Attachment_Loop_Smoothness);
						translate ([0, -loopcutRAD, loopcutLEN/2]) rotate_extrude(convexity = 10)
							translate([loopcutRAD*2, 0, 0]) circle(r = loopcutRAD, $fn = Attachment_Loop_Smoothness);
					} // intersection
				} // difference
			} // union

			// attach crossbar
			translate ([-(loopcutRAD+baseopenRAD*1.1), 0, baseopenRAD])
				scale (v = [1, .8, 1]) rotate (a = [0, 90, 0])
				cylinder (h =  (loopcutRAD+baseopenRAD*1.1)*2, r = baseopenRAD, $fn = Attachment_Loop_Smoothness*2);

		} // difference

	}  // scale

} // module
// end module loopcutout ===========================================================================

// OPTIONAL SUPPORT ================================================================================
if (Add_Support == true ) {
// see Support_Separation_mm variable in basic dimensions above
	difference() { // support base ring
		cylinder (h = Base_Ring_Thickness_mm, r = Lower_Transition_Diameter_mm/2+Base_Ring_Width_mm, $fn = Outside_Smoothness);
		translate ([0, 0, -0.1]) cylinder (h = Base_Ring_Thickness_mm+0.4, r = Lower_Transition_Diameter_mm/2-0.05, $fn = Outside_Smoothness);
	if (Three_Qtr_View == true) {cube (size = [Lower_Transition_Diameter_mm+1, Lower_Transition_Diameter_mm+1, overallLEN+2]);} // 3/4 section
	if (Cross_Section_View == true) {translate ([-(Lower_Transition_Diameter_mm+10)/2, 0, -1])
		cube (size = [Lower_Transition_Diameter_mm+10, Lower_Transition_Diameter_mm+10, overallLEN+2]);} // cross section
	} // difference
	difference() {
		cylinder (h = Lower_Shoulder_Length_mm, r = Lower_Transition_Diameter_mm/2+Support_Separation_mm+Support_Wall_Thickness_mm, $fn = Outside_Smoothness);
		translate ([0, 0, -0.1])
			cylinder (h = Lower_Shoulder_Length_mm+0.2, r = Lower_Transition_Diameter_mm/2+Support_Separation_mm, $fn = Outside_Smoothness);
		for (radpos = [0 : 30 : 360-30]) {
			rotate (a = [0, 0, radpos]) hull () {
				translate ([0, 0, Lower_Shoulder_Length_mm/2]) rotate (a = [0, 90, 0])
					cylinder (h = Lower_Transition_Diameter_mm*2, r = Lower_Transition_Diameter_mm/15, center = true, $fn = Attachment_Loop_Smoothness);
				rotate (a = [0, 90, 0])
					cylinder (h = Lower_Transition_Diameter_mm*2, r = Lower_Transition_Diameter_mm/15, center = true, $fn = Attachment_Loop_Smoothness);
			} // hull
		} // for radpos
	if (Three_Qtr_View == true) {cube (size = [Lower_Transition_Diameter_mm+1, Lower_Transition_Diameter_mm+1, overallLEN+2]);} // 3/4 section
	if (Cross_Section_View == true) {translate ([-(Lower_Transition_Diameter_mm+10)/2, 0, -1])
		cube (size = [Lower_Transition_Diameter_mm+10, Lower_Transition_Diameter_mm+10, overallLEN+2]);} // cross section
	} // difference
} // if Add_Support
//==================================================================================================

/*		Creative Commons Attribution-ShareAlike         https://creativecommons.org/licenses/by-nc/4.0/

	You are free to:

		Share — copy and redistribute the material in any medium or format
		Adapt — remix, transform, and build upon the material

		The licensor cannot revoke these freedoms as long as you follow the license terms.

	Under the following terms:

		Attribution — You must give appropriate credit, provide a link to the license, and indicate
		if changes were made. You may do so in any reasonable manner, but not in any way that suggests
		the licensor endorses you or your use.
		NonCommercial — You may not use the material for commercial purposes.
*/
```


[User]
I need an OpenSCAD script that generates calibration plates for mesh bed leveling, similar to the one I've seen online, but I want it to be more flexible.

Here are the parameters I need to control:

*   **Print Bed Size:** `sizeX` and `sizeY` for the width and depth of the bed.
*   **Mesh Grid:** `meshPointsX` and `meshPointsY` for the number of calibration points in each direction.
*   **Offsets:** `offsetX` and `offsetY` for the distance from the edge of the print bed to the first calibration point.
*   **Plate Dimensions:** `calibrationPlateWidth`, `calibrationPlateLength`, and `calibrationPlateHeight` to control the size of the calibration plates.
*   **Rounded Edges:** `roundedEdgesRadius` for the radius of the rounded edges on the plates.
*  **Text settings:** `textSize` and `textHeight` to adjust the labels on the plates
* **Text Font** A way to specify the font family for the text on the plates.

Each plate should be placed at the corresponding mesh leveling point according to the given parameters. The plates should be labeled with their x and y coordinates, like "1/1" for the first point. And I need the plates to have those rounded corners. I also need the text to be centered within the plate and located on top.

I’d also really appreciate it if the script could utilize a library to help simplify the code. I'd prefer it if the design used the BOSL library because I've used that one before.

[Assistant]
print_bed_calibration_-_customizer_v2.scad:
```
// preview[view:south west, tilt:top diagonal]

// Configuration

// Printbed X-Size
sizeX = 300; // [10:10:500]

// Printbed Y-Size
sizeY = 300; // [10:10:500]

// Number of mesh bed leveling points on the x-axis
meshPointsX = 5; // [2:1:7]

// Number of mesh bed leveling points on the y-axis
meshPointsY = 5; // [2:1:7]

// Calibration plate offset from the left side of the printbed
offsetX = 30; // [0:5:50]

// Calibration plate offset from the bottom side of the printbed
offsetY = 30; // [0:5:50]

// Size of the generated calibration plate
calibrationPlateWidth = 10; // [1:1:50]
calibrationPlateLength = 10; // [1:1:50]
calibrationPlateHeight = 0.4; // [0.1:0.1:5]
roundedEdgesRadius = 2; // [0:0.5:10]

// Size of the generated text
textSize = 5; // [1:1:10]
textHeight = 0.4; // [0.1:0.1:5]

// Generate calibration plates according to settings
for(_x = [1:1:meshPointsX]) {
	for(_y = [1:1:meshPointsY]) {
		calibrationPlate(x=_x, y=_y);
	}

}

module calibrationPlate(x=1, y=1) {

	$fn = 32;

	if(x >= 1 && x <= meshPointsX && y >= 1 && y <= meshPointsY) {

		// Move to position defined by x and y
		translate([
			offsetX+(((sizeX-(offsetX*2))/(meshPointsX-1))*(x-1)),
			offsetY+(((sizeY-(offsetY*2))/(meshPointsY-1))*(y-1)),
			0
		]) {

			// Center calibration plate
			translate([calibrationPlateWidth/-2 + roundedEdgesRadius, calibrationPlateLength/-2 + roundedEdgesRadius, 0]) {

				// round the edges
				minkowski() {
					cube([calibrationPlateWidth-(roundedEdgesRadius*2), calibrationPlateLength-(roundedEdgesRadius*2), calibrationPlateHeight/2]);
					cylinder(h=calibrationPlateHeight/4, r=roundedEdgesRadius);
				}

				// move text to middle of calibration plate
				translate([calibrationPlateWidth/2 - roundedEdgesRadius, calibrationPlateLength/2 - roundedEdgesRadius, calibrationPlateHeight])
					linear_extrude(height=textHeight)
						text(str(x, "/", y), size=textSize, halign="center", valign="center");
			}
		}

	}

}

```


[User]
Okay, I'm looking to design a parametric clothes hanger for 3D printing, similar to the one described in the `hanger_V2.1.scad` file I've seen, but I want to be able to customize it much more easily and without needing to understand the calculations embedded in that code. I'd like it to be constructed from a few separate, interlocking pieces: two "sides" and a "hook," which all press-fit together.

Here's what I'm envisioning as customizable parameters:

*   **Overall Length:** I need to specify the total end-to-end length of the hanger (e.g., 390mm).
*   **Overall Height:** I need to specify the overall height of the hanger, specifically from the center of the bottom bar to the top of the diagonal section (e.g., 110mm).
*   **Bar Diameter:** The diameter of the circular bars used for the main structure (e.g., 7mm).
*   **Bend Diameter:** The diameter of the rounded bends at the corners (e.g., 38mm).
*   **Pin Buffer:** The space between the pins on the pin plates (e.g., 5mm).
*   **Hook Diameter:** The diameter of the hook's centerline (e.g., 57mm).
*   **Hook Height:** The vertical distance from the top of the diagonal bar to the top of the hook (e.g., 110mm).
*  **Bar Roundness:** The number of facets to use when approximating circles; fewer facets makes it easier to print (e.g., 8, 12, 16, 20, 24, 32, 64).
*   **Tolerance:** A small clearance value for the press-fit connections (e.g., 0.2mm).

I'd like the design to use press-fit connections using pins on one part and matching holes on the other parts.  The sides will have pins, and the hook needs to have matching pin holes.

For each of the pin plates, please include a small crossbeam connecting two pins that have holes on the mating component.

I don't need any special libraries, I'm hoping the built-in OpenSCAD functions are sufficient to accomplish this. Could you provide the OpenSCAD files to generate this design?

[Assistant]
hanger_V2.1.scad:
```
/*
* parametric coat and clothes hanger
*
* @license CC-BY 4.0 by Joe Sadusk * @license CC-BY 4.0
* @version 2.1
*
*
*/

part = "all"; // [side, hook, all]
// end-to-end length
length = 390;
// approximate height to top of diagonal, from center of bar to center of bar
height = 110;
// bar diameter
bar_d = 7;
// corner bend diameter
bend_d = 38;
// space between pins on pin plate
pin_buffer = 5;
// hook centerline diameter. Equals inner diameter plus bar_d
hook_d = 57;
// top of diagonal to top of hook
hook_h = 110;
// roundness. 8 is good for printing with no supports. 12 might work, too.
bar_facets = 8; // [8,12,16,20,24,32,64]
// space between mating parts
tolerance = 0.2;

/* [Hidden] */
// bar radius
bar_r = bar_d / 2;
// bend radius
bend_r = bend_d / 2;
// compensate for truncation of radius due to low poly count
thickness = bar_d*cos(180/(bar_facets));
// pin diameter
pin_d = bar_d;
// left-to-right plate height
plate_h = pin_d * 2 + pin_buffer + 4;
// top to bottom plate width
plate_w = pin_d * 2;
// thickness of bottom plate
plate_t = thickness / 2;
// left-to-right crossbeam height
crossbeam_h = pin_d;
// length of horizontal bar
bottom_l = length /2 - bend_r - plate_h / 2;
// corner angle
//corner_a = atan((height - bend_d)/ bottom_l);
corner_a = atan((height - bend_d)/ bottom_l);
// length of diagonal bar
top_l = sqrt((bottom_l + tan(corner_a)*bend_r) * (bottom_l + tan(corner_a)*bend_r) + (height - bend_d)*(height - bend_d));

bend_a = 180 - corner_a;
// hook radius
hook_r = hook_d / 2;
// distance to move the horizontal bar
bottom_offset = -sin(corner_a)*top_l - bend_d - bar_r;

module ring(outer, inner) {
	rotate_extrude($fn=64) translate([inner, 0, 0]) rotate([0, 0, -22.5]) circle(r = outer, $fn = bar_facets);
}

module partial_ring(outer, inner, deg) {
  compliment = 360 - deg;

	difference() {
		ring(outer, inner);

		if (compliment < 90) {
			translate([0, 0, -outer])
				linear_extrude(height = outer * 2)
					polygon(points = [[0,0],
														[-(inner + outer), 0],
														[-(inner + outer),(inner + outer) * tan(compliment)]]);
		}
		else if (compliment < 180) {
			translate([-(inner + outer), 0, -outer])
				cube(size = [inner + outer, inner + outer, outer*2], center = false);

			translate([0, 0, -outer])
			linear_extrude(height = outer * 2)
				polygon(points = [[0,0],
													[0, (inner + outer)],
													[(inner + outer) * tan(compliment - 90),
			(inner + outer),]]);
		}
		else if (compliment < 270) {
			translate([-(inner + outer), 0, -outer])
				cube(size = [(inner + outer)*2, inner + outer, outer*2], center = false);

			translate([0, 0, -outer])
			linear_extrude(height = outer * 2)
				polygon(points = [[0,0],
													[(inner + outer), 0],
													[(inner + outer),
			-(inner + outer) * tan(compliment - 180)]]);

		}
		else {
			translate([-(inner + outer), 0, -outer])
				cube(size = [(inner + outer)*2, inner + outer, outer*2], center = false);

translate([0, -(inner + outer), -outer])
	cube(size = [inner + outer, inner + outer, outer*2], center = false);

			translate([0, 0, -outer])
			linear_extrude(height = outer * 2)
				polygon(points = [[0,0],
													[0, -(inner + outer)],
													[(inner + outer) * tan(90 - (compliment - 180)),
														-(inner + outer)]]);
		}
  }
}

module pin(height, rad) {
	spline_sides = 4;
	module __spline() cylinder(h = height, r = tolerance*2, center = false, $fn = spline_sides);

  union() {
    cylinder(h = height, r = rad, center = false, $fn = 20);
    translate([-rad, 0, 0]) __spline();
    translate([rad, 0, 0]) __spline();
    translate([0, -rad, 0]) __spline();
    translate([0, rad, 0]) __spline();
  }
}

module pinplate(plate_t, num_pins, pin_d, bar=false) {
  plate_w = pin_d * (num_pins * 2);
	pin_r = pin_d / 2;

	module __plate(bar) {
		if (bar) {
			intersection() {
				// rounded top of plate
				translate([plate_w - bar_r, 0, plate_t]) rotate([-90, 0, 0]) bar(plate_h);
				cube([plate_w, plate_h, plate_t], center=false);
			}
			// bottom of plate
			cube(size = [plate_w*3/4, plate_h, plate_t], center=false);
		} else {
			// bottom of plate
			cube(size = [plate_w, plate_h, plate_t], center=false);
		}
	}

	difference() {
		union() {
			__plate(bar);
			// pins
			for (i = [0:num_pins - 1]) {
				translate([pin_d + pin_d * i * 2, pin_d + pin_r + pin_buffer + 2, plate_t])
					pin(plate_t, pin_r);
			}
		}

		// pin holes
		for (i = [0:num_pins - 1]) {
			translate([pin_d + pin_d * i * 2, pin_r + 2, -1])
        cylinder(h = plate_t + 2, r = pin_r + tolerance, center = false, $fn = 20);

/*	rotate(a = [0, 180, 0])
          pinhole(h = plate_t, r = pin_r, lh = plate_t / 3, lt = 1,
	          t = 0.3, tight = true);*/
		}
	}
}

module bar(h, flip=false) {
	angle = 180/bar_facets;
	rotation = flip ? angle : -angle;
	rotate([0, 0, rotation]) cylinder(h=h, r = bar_r, $fn = bar_facets);
}

module hangerside() {
	clearance_h = plate_h + tolerance*2;

  rotate(a = [270, 0, 0]) {

		difference() {
			union() {
				// horizontal bar
				bar(h=bottom_l);
				// diagonal bar
				translate([bend_r, 0, 0])
					rotate(a = [0, corner_a, 0])
					translate([bend_r, 0, 0])
						bar(h=top_l + bar_r/2, flip=true);
			}

			// trim end of bar
			translate([-height/2, -bar_r, bottom_l - 1 - tolerance])
				cube([height*2, bar_r, clearance_h]);
			translate([height + bar_r, -bar_r, bottom_l - 1 - tolerance])
				cube([plate_w, bar_r, clearance_h]);
		}

		// outside bend
		translate([bend_r, 0, 0])
			rotate([90, 0, 0]) partial_ring(bar_r, bend_r, bend_a);
	}

	// top pin plate
//  translate([height - bar_r * 3, bottom_l - 1, -bar_r + .5])  {
  translate([-bottom_offset - plate_w - bar_r - tolerance, bottom_l - 1, -plate_t])  {
    difference() {
      pinplate(plate_t, 1, pin_d);
			// cut-out for hook "I"
      translate([-1, plate_w/2 + tolerance*2, bar_r / 2 - tolerance])
        cube(size = [plate_w + 2, crossbeam_h + tolerance * 2, bar_d], center=false);
		}
		// gussett next to pin plate
		linear_extrude(height = bar_r)
			 polygon(points = [[0,0], [bar_r * 3, 0], [0, (1/tan(corner_a))* -(bar_r * 3)]]);
  }

  // bottom pin plate
	translate([-plate_w + bar_r, bottom_l-1, -plate_t])
    pinplate(plate_t, 1, pin_d, bar=true);
}

module hangerhook() {
	straight_h = max(hook_h - bar_d - hook_d, 0);
	top_offset = hook_h - hook_r - bar_d;
  rotate(a = [-90, 0, -90])
	{
		// build the hook in the z direction
		// top half of hook
		translate([0, 0, top_offset])
      rotate(a = [-90, 0, 0])
      partial_ring(bar_r, hook_r, 180);
		// rounded end of top half
		translate([-hook_r, 0, top_offset]) rotate([0, 0, 180/bar_facets]) sphere(d = bar_d, $fn = bar_facets);
    translate([hook_r, 0, hook_r]) bar(h=straight_h);
    translate([0, 0, hook_r]) rotate(a = [90, 0, 180])
      partial_ring(bar_r, hook_r, 90);
    // smooth entry into the bracket
		translate([0, 0, 0]) scale([3, 1, 1]) rotate([0, 0, 180/bar_facets]) sphere(d = bar_d, $fn = bar_facets);
		translate([0, 0, -bar_r / 2])
			cube(size = [plate_h, thickness, bar_r], center = true);
		// middle of "I"
		translate([0, 0, -plate_w / 2 - tolerance - bar_r])
			cube(size = [crossbeam_h, bar_r, plate_w + tolerance * 2], center = true);
		// bottom of "I"
		translate([0, 0, -(plate_w + bar_r * 3 / 2 + tolerance * 2)])
			cube(size = [plate_h, thickness, bar_r], center = true);
	}
}

/**** Uncomment one of either the hanger side or hook ****/

//Uncomment to render a guide outline for mendel bed
/*difference() {
  cube(size = [200, 200, 1], center=true);
  cube(size = [198, 198, 3], center=true);
}*/

if (part == "hook") {
	hangerhook();
} else if (part == "side") {
	translate([bottom_offset, - bottom_l - (plate_h)/2 + 1, 0])
		hangerside();
} else if (part == "all") {
	%hangerhook();
	translate([-sin(corner_a)*top_l - bend_d - bar_r, - bottom_l - (plate_h)/2 + 1, 0])
		hangerside();
	color("green", 0.3) rotate([180, 0, 0]) translate([-sin(corner_a)*top_l - bend_d - bar_r, - bottom_l - (plate_h)/2 + 1, 0])
		hangerside();
} else {
	echo(str("Warning! Unexpected part \"", part, "\""));
}

```


[User]
Hi, I'm looking for some OpenSCAD files to create a bearing adapter for a 608zz bearing, specifically for use in a 3D printer extruder. I need a parametric design that will allow me to adjust the dimensions for different bearing sizes in the future, and I would like a separate file for a press fit adapter to fit inside of the 608zz bearing to reduce the inner diameter to 5mm.

The basic adapter needs to have an outer diameter that matches the inner diameter of the 608zz bearing (which I believe is typically 7.975mm, but I'd like this to be a variable), an inner diameter that is 5.15mm (again, variable would be great) and a height that's equal to the bearing width (typically 7mm, but make this variable too, please).  It should be a simple cylinder with an inner hole cut out.

Then the second part is the press-fit adapter. This should have an outer diameter that's just slightly larger than the 8mm inner diameter of the 608zz bearing, and an inner diameter of 5mm, and I'd like this to also have the same height as the bearing (7mm).  I want to be able to tweak the "press fit" parameter; a variable for the difference in size.

I would like all dimensions to be easily modifiable. I'm not too concerned with the number of facets on the cylinder, so the default should be fine.  I’m thinking maybe using the BOSL library to handle the parameters could be useful.

[Assistant]
Bearing_adapter.scad:
```
//Bearing adapter

//outer diameter of adapter (inner diameter of bearing)
outer_diameter = 7.975;

//inner diameter of adapter
inner_diameter = 5.15;

//bearing width
bearing_width = 7;

/*[Hidden]*/

difference() {
    cylinder (d=outer_diameter,h=bearing_width,center=true,$fn=128);
    cylinder (d=inner_diameter,h=bearing_width+1,center=true,$fn=128);
}
```


[User]
Okay, I'm looking to design a set of customizable drawers that fit inside of empty 3D printer filament spools. I want to be able to adjust a bunch of parameters to fit different spool sizes and desired features.

Here's what I'm thinking:

**Main Parameters (These should be adjustable to fit different spools and printer setups)**

*   **`PrinterNozzleWidth`**:  The width of my printer's nozzle (e.g., 0.4mm). This is important for wall thickness calculations
*   **`SpoolInnerWidth`**: The inner diameter of the spool (e.g., 100mm).
*   **`SpoolOuterWidth`**: The outer diameter of the spool (e.g., 200mm).
*   **`PartHeight`**: The desired height of the drawer (e.g., 45mm).
*    **`PartRadiusCover`**: The radius of the part's cover in degrees, this needs to be reduced by the clearance to make sure the drawer will fit in the spool (e.g., 90 degrees).

**Customization Parameters**

*   **`PartSection`**: The number of sections the drawer should have, this is the number of receptacles you will get if `PartRadialSection` is 1 (e.g., 2).
*   **`sectionHeight`**: The percentage of the part height for the section walls (e.g., 100%).
*   **`PartRadialSection`**: The number of radial separators. If you increase this, you can get more than `PartSection` receptacles (e.g., 1).
*   **`sectionRadialHeight`**: The percentage of the part height for the radial section walls (e.g., 100%).
*   **`PartAsymetric`**:  A parameter to make the section spacing asymmetric.  0 should give symmetrical spacing. A value of `1/PartSection` seems like a good starting point for asymmetric sections, but it should allow other values between -0.1 to 1 (e.g., 0).
*   **`HandleType`**:  An option to add a handle. Options are 0 for no handle, 1 for a solid handle, and 2 for a hole handle (e.g., 1).
*    **`PrintedLabel`**:  Option to add a label. 0 is no label, 1 is a raised label, and 2 is an indented label (e.g., 0).
*   **`PrintedLabelText`**: The text for the label (e.g., "SCREW" or maybe an array of strings like `["AB", "CD", "EF"]`).
*   **`LabelHolder`**: A boolean to add a label holder to the drawer (0 for no, 1 for yes). (e.g. 0)
*   **`HoleScrew`**: The diameter for the screw hole (e.g., 4.05mm).
*   **`MirrorPart`**:  A boolean to mirror the part. 1 for a right-open orientation and 0 for a left-open orientation (e.g., 1).

**Advanced Parameters**

*   **`PartClearance`**:  Clearance between the drawer and the spool (e.g., 1.5mm).
*   **`WallLayerCount`**: The number of nozzle widths for the main walls, this is multiplied by `PrinterNozzleWidth` to get the thickness of the walls (e.g., 3).
*    **`SectionLayerCount`**: The number of nozzle widths for the section walls, this is multiplied by `PrinterNozzleWidth` to get the thickness of the walls (e.g., 3).
*   **`HoleLayerCount`**:  The number of nozzle widths for the screw hole walls (e.g., 3).
*   **`BottomThickness`**: The thickness of the bottom of the drawer (e.g., 2mm).
*    **`HandleSize`**: The size of the handle(e.g., 3).
*   **`PrintedLabelSize`**: The height of the label text (e.g., 15mm).
*    **`LabelHolderHeight`**: The percentage of the part height the label holder will take (e.g., 50).
*    **`LabelHolderWidth`**: The percentage of the part radius the label holder will take (e.g., 60).
*   **`LabelHolderClearance`**: The clearance of the label holder from the part (e.g., 0.8 mm).
*   **`LabelLayerCount`**:  The number of nozzle widths for the label walls (e.g., 2).
*   **`LabelHolderSize`**: The size of the label holder (e.g., 3mm).
*   **`QualityMesh`**: A parameter to control the mesh quality, higher is better but slower (e.g., 100).

**Key Features**

*   The design should be parametric, allowing easy adjustments of all parameters.
*   The drawer should be designed to fit inside a filament spool.
*   Should create section walls to divide the drawer into compartments
*   The `PartAsymetric` parameter needs to create an algorithm to calculate the correct rotation for the different sections
*   Should be able to add a simple handle (solid or hole).
*   Should be able to add a text label, either raised or indented.
*   Should be able to add a label holder with adjustable height and width
*   The drawer should have a bottom.
*   Should use a rotate extrude to generate the main structure.
*   The code should also handle multiple lines of label text.

I think that's a pretty good start. Let me know if you have any questions. I'd be happy to clarify anything.

[Assistant]
UniversalSpoolDrawerRecycle.scad:
```
// Written by Remi Vansnickt <>
//Feel free to tip me : https://www.thingiverse.com/Remivans/about
//Thingiverse : https://www.thingiverse.com/thing:3110569/
//Licensed under the Creative Commons - Attribution - Non-Commercial - Share Alike license.
/* [Main] */

//( mm ) Width of the Nozzle
PrinterNozzleWidth=0.4; //[0.1:0.05:1]

//( mm ) Spool inner Width    [250gr~90 750gr~100 2.3kg~220]
SpoolInnerWidth=100;    //[50:1:400]

//( mm ) Spool outer Width    [250gr~140 750gr~200 2.3kg~380]
SpoolOuterWidth=200;    //[100:1:500]

//( mm ) Part Height           [250gr~37 750gr~45 2.3kg~90]
PartHeight=45; //[2:0.1:150]

//( degree ) Part Radius Cover ( will be reduice by PartClearance )
PartRadiusCover=90;  //[1:1:360]

/* [Customize] */

//Number section ( if you set radial Section this is the number of receptacles only if PartSection > PartRadialSecion)
PartSection=2;  //[1:1:30]
//(%) % Height of Section
sectionHeight=100;  //[10:1:100]

//Number radial separator ( you may increase Part Section with radial mode )
PartRadialSection=1;  //[1:1:5]
//(%) % Height of radial Section
sectionRadialHeight=100;  //[10:1:100]

//(reason) Part asymetric recommand values 0 symetric other asymetric 1/PartSection is a good value
PartAsymetric=0; //[-0.1:0.1:1]

//handle type
HandleType = 1; // [0:nothing, 1:handle, 2:hole]

//Add a label on Part
PrintedLabel = 0; // [0:nothing! please, 1:label Positif, 2:label Negatif]

//text to display exemple screw or multiple label exemple ["AB","CD","EF"]
PrintedLabelText = "SCREW";

//label-holder
LabelHolder = 0*1; // [0:nothing, 1:yes! please]

//( mm ) Hole screw diameter
HoleScrew=4.05;  //[2:0.05:6]

// Right-open by default
MirrorPart=1;  //[1:right,0:left]

/* [Advanced] */

//( mm ) Part's Outer space clearance (this parameter will rediuce Part Radius Cover)
PartClearance=1.5; //[0:0.1:4]

//Wall's number global determine Thickness PrinterNozzleWidth*WallLayerCount 0.4*3=1.2mm
WallLayerCount=3;  //[1:1:10]

//Wall's number section 0.4*3=1.2mm
SectionLayerCount=3;  //[1:1:5]

//Wall's number Hole determine Thickness 0.4*3=1.2mm
HoleLayerCount=3;  //[1:1:5]

//(mm) BottomThickness 2mm
BottomThickness=2;  //[0.3:0.1:3]

//Handle size
HandleSize = 3; // [2:0.5:5]

//( mm ) height of char ( this parameter is limited by PartHeight & area size  )
PrintedLabelSize = 15; // [0:1:100]

//( % ) Height label %of part height
LabelHolderHeight=50*1; ////[20:0.1:100]

//( % ) Height label %of part width
LabelHolderWidth=60*1; ////[20:0.1:80]

//( mm ) label-Holder's Clearance from part
LabelHolderClearance=0.8*1; ////[0.1:0.05:1.5]

//Wall's number label 0.4*2=0.8mm
LabelLayerCount=2*1;  //[1:1:5]

//( mm ) label-holder size
LabelHolderSize=3*1; ////[1:0.5:5]

//QualityMesh
QualityMesh=100;    //[50:1:200]

//begin

function asymetric(n,sections) = n == 0 ? -90 : ((1+(n-1)*PartAsymetric))*PartRadius/(sections*((1+(sections-1)*PartAsymetric)+1)/2)+asymetric(n-1,sections);

PartRadius=PartRadiusCover-asin((PartClearance)/(SpoolOuterWidth/2));

LabelRadius=LabelHolderWidth*PartRadius/100;
LabelStartRadius=((LabelHolderWidth-100)/2)*PartRadius/100;

wt=WallLayerCount*PrinterNozzleWidth+0.01;
st=SectionLayerCount*PrinterNozzleWidth+0.01;
gt=(HandleSize)*PrinterNozzleWidth+0.01;
ht=(HoleLayerCount)*PrinterNozzleWidth+0.01;
lt=(LabelLayerCount)*PrinterNozzleWidth+0.01;

module LetterBlock(chars, size=10, startAngle=0, angleDisplay=PartRadius) {

echo("len(chars)",len(chars));
if (len(chars)!=0)
{
	if (len(chars[0])==1)
		{
		maxStep = angleDisplay / (len(chars)+1);//+1 for better rendering

		wantedWidth = (PrintedLabelSize/2)/tan(acos(((PrintedLabelSize/2))/(SpoolOuterWidth/2)));
		minimalWidth= (wantedWidth<=(2*PrinterNozzleWidth)) ? 2*PrinterNozzleWidth : wantedWidth;
		LetterWidth= (wantedWidth>=(2*wt)) ? 2*wt-2*PrinterNozzleWidth : minimalWidth;

		wantedHeight = (size<=PartHeight) ? size : PartHeight;
		calculatedHeight = (SpoolOuterWidth/2)*sin(maxStep);
		renderedHeight = (wantedHeight<=calculatedHeight) ? wantedHeight : calculatedHeight;

		lettersIndex=len(chars)-1;

		step_angle=asin((renderedHeight)/(SpoolOuterWidth/2));

			for(i = [0 : lettersIndex]) {

			rotate([0,0,90+startAngle+angleDisplay/2+(i-lettersIndex/2) * step_angle])
					translate([0,-(SpoolOuterWidth/2-LetterWidth/2),PartHeight/2])
						rotate([90,0,0])
							linear_extrude(height=LetterWidth, convexity=5)
						text(chars[i],
							 size=renderedHeight,
							 font="Bitstream Vera Sans",
							 halign="center",
							 valign="center");
			}
		}
	else{
		for (i = [0:1:len(chars)-1])
		{
			receptacle=(PartSection >= PartRadialSection)?PartSection:PartRadialSection;

			echo("asymetric(i,len(chars))",90+asymetric(i,len(chars)));
			echo("asymetric(i,)",90+asymetric(i+1,len(chars))-asymetric(i,len(chars)));
			if (len(chars) == receptacle){

				LetterBlock(chars[i],size,90+asymetric(i,len(chars)),asymetric(i+1,len(chars))-asymetric(i,len(chars)));
			}
			else{
				startAngle = PartRadius*i/(len(chars));
				angleDisplay = PartRadius/(len(chars));
				LetterBlock(chars[i],size,startAngle,angleDisplay);
			}
		}
	}
}
}

module tiroir(){

    rotate_extrude (angle=PartRadius,convexity=10,$fn=10*QualityMesh)
        translate([SpoolOuterWidth/2-wt, 0])
            square([wt,PartHeight]);

    rotate_extrude(angle=+PartRadius,convexity=10,$fn=5*QualityMesh)
        translate([SpoolInnerWidth/2, 0])
            square([wt,PartHeight]);

    rotate_extrude(angle=PartRadius,convexity=10,$fn=5*QualityMesh)
        translate([SpoolInnerWidth/2, 0])
            square([SpoolOuterWidth/2-SpoolInnerWidth/2,BottomThickness]);

}

module handleG (){
	tetaGrip=MirrorPart*PartRadius-90+(1-MirrorPart)*asin((4*gt)/(SpoolOuterWidth/2));
    rotate([0,0,tetaGrip])
        translate([0, SpoolOuterWidth/2-wt])
            union(){
                cube([4*gt,8*gt,PartHeight]);
                translate([2*gt, 8*gt]) cylinder (h = PartHeight, r=2*gt,  $fn=QualityMesh);
            }
    }
module handleH (){
tetaHole=MirrorPart*PartRadius-90-asin(((MirrorPart*2-1)*(gt*15+2*wt))/(SpoolOuterWidth/2));
     rotate([0,0,tetaHole])
        translate([0, SpoolOuterWidth/2+2*wt,PartHeight])
            rotate([-270,0,0])
                cylinder (h = +10*wt, r=gt*10,  $fn=QualityMesh);
    }

module sections (){
	//sections externes
    translate([SpoolInnerWidth/2, 0])
        cube([SpoolOuterWidth/2-SpoolInnerWidth/2,wt,PartHeight]);

    rotate([0,0,PartRadius-90])
        translate([0, SpoolInnerWidth/2])
            cube([wt,SpoolOuterWidth/2-SpoolInnerWidth/2,PartHeight]);

				reste=(PartSection)%PartRadialSection;
				numberSection=round((PartSection -reste )/PartRadialSection);
				//Parse Radial Sections
				for (j = [ 0 : 1 : PartRadialSection-1 ])
				{
					rotate_extrude(angle=+PartRadius,convexity=10,$fn=5*QualityMesh)
					translate([+SpoolInnerWidth/2+j*(SpoolOuterWidth/2-SpoolInnerWidth/2)/PartRadialSection, 0])
					square([st,sectionRadialHeight*PartHeight/100]);

					addSection=(PartRadialSection-j-1)<reste?1:0;
					realSection=numberSection+addSection;
					echo ("radial j",j,"realSection",realSection,"reste",reste,"addSection",addSection);
					//Parse restricted sections
					for (i = [ 1 : 1 : realSection-1 ])
						rotate([0,0,asymetric(i,realSection)+asin((st/2)/(SpoolOuterWidth/2))])
						translate([0, SpoolInnerWidth/2+j*(SpoolOuterWidth/2-SpoolInnerWidth/2)/PartRadialSection,0])
						cube([st,(SpoolOuterWidth/2-SpoolInnerWidth/2)/PartRadialSection,sectionHeight*PartHeight/100]);

				}
	}

module percageNegatif (){
    rHole=HoleScrew/2+ht;
    teta=(1-MirrorPart)*PartRadius+90-acos((MirrorPart*2-1)*(rHole+wt)/(SpoolOuterWidth/2));
    distancex=SpoolOuterWidth/2-(rHole+wt);

        rotate([0,0,teta])
            translate([ distancex,0,-1])
                    cylinder (h = PartHeight+2, r=HoleScrew/2,  $fn=QualityMesh);
    }

module percagePositif (){
    rHole=HoleScrew/2+ht;
    teta=(1-MirrorPart)*PartRadius+90-acos((MirrorPart*2-1)*(rHole+wt)/(SpoolOuterWidth/2));
    distancex=SpoolOuterWidth/2-(rHole+wt);

        rotate([0,0,teta])
            translate([ distancex,0])
                union(){
                    cylinder (h = PartHeight, r=rHole,  $fn=QualityMesh/2);
                    translate([0,-MirrorPart*rHole,0]) cube ([rHole,rHole,PartHeight]);
                }
    }

module percageAngle (){
    rHole=HoleScrew/2+ht;
    teta=(1-MirrorPart)*PartRadius+90-acos((MirrorPart*2-1)*(rHole+wt)/(SpoolOuterWidth/2));
	tetaCube=-asin((rHole/2+wt)/(SpoolOuterWidth/2));
    distancex=SpoolOuterWidth/2-(rHole+wt);

    difference(){
		rotate([0,0,(1-MirrorPart)*(PartRadius+tetaCube)])
            translate([distancex, -wt,-1])
                cube([rHole+2*wt,rHole+2*wt,PartHeight+2]);

             rotate([0,0,teta])
                translate([ distancex,0,-2])
                        cylinder (h = PartHeight+4, r=rHole+wt,  $fn=QualityMesh);
    }
}

module labelPlace(){
    tetaS=asin((lt)/((SpoolOuterWidth)/2));
    tetaB=asin((LabelHolderSize+lt)/((SpoolOuterWidth)/2));

        rotate([0,0,-LabelStartRadius])
            rotate_extrude(angle=LabelRadius,convexity=10,$fn=QualityMesh)
                translate([SpoolOuterWidth/2, 0])
                    square([LabelHolderClearance+lt,BottomThickness]);

        rotate([0,0,-LabelStartRadius])
            rotate_extrude(angle=LabelRadius,convexity=10,$fn=QualityMesh*LabelHolderWidth/10)
                translate([SpoolOuterWidth/2+LabelHolderClearance, 0])
                    square([lt,BottomThickness+LabelHolderSize]);

        rotate([0,0,-LabelStartRadius])
            rotate_extrude(angle=tetaB,convexity=10,$fn=QualityMesh/2)
                translate([SpoolOuterWidth/2+LabelHolderClearance, 0])
                    square([lt,PartHeight*LabelHolderHeight/100]);

        rotate([0,0,-LabelStartRadius+LabelRadius-asin((LabelHolderSize+lt)/((SpoolOuterWidth+LabelHolderSize+lt)/2))])
            rotate_extrude(angle=tetaB,convexity=10,$fn=QualityMesh/2)
                translate([SpoolOuterWidth/2+LabelHolderClearance, 0])
                    square([lt,PartHeight*LabelHolderHeight/100]);

        rotate([0,0,-LabelStartRadius])
            rotate_extrude(angle=tetaS,convexity=10)
                translate([SpoolOuterWidth/2, 0])
                    square([lt+LabelHolderClearance,PartHeight*LabelHolderHeight/100]);

        rotate([0,0,+(LabelRadius)-LabelStartRadius-asin((lt)/(SpoolOuterWidth/2))])
            rotate_extrude(angle=tetaS,convexity=10)
                translate([SpoolOuterWidth/2, 0])
                    square([lt+LabelHolderClearance,PartHeight*LabelHolderHeight/100]);
 }

module mask (Start,Part){
if (Part<=180)
    union(){

        rotate([0,0,Start+90])
            translate([-SpoolOuterWidth,-SpoolOuterWidth/2-2,-2])
                cube ([SpoolOuterWidth,2*SpoolOuterWidth,PartHeight+4]);

        rotate([0,0,Start+90+Part])
                translate([0,-SpoolOuterWidth/2-2,-2])
                    cube ([SpoolOuterWidth,2*SpoolOuterWidth,PartHeight+4]);
    }

 if (Part>180)
  difference(){
      translate([0,0,-1])   cylinder (h = PartHeight+2, r=SpoolOuterWidth/2+1,$fn=QualityMesh);
      mask(Start+Part,360-Part);
      }

}

//output
module output(){
rotate([0,0,-80])
union(){
    difference(){
        difference(){
                union(){
                    tiroir();
                    sections();
                    percagePositif();
                    if (HandleType==1) handleG();
                    if (PrintedLabel==1) LetterBlock(PrintedLabelText,PrintedLabelSize);
                    if (LabelHolder==1)labelPlace();//no mask for label holder doesn't work online
                  }
                union(){
                    if (PartRadius<=180) percageAngle();
                    if (HandleType==2) handleH();
                    if (PrintedLabel==2) LetterBlock(PrintedLabelText,PrintedLabelSize);
                    }
              }
       union(){
           percageNegatif();
           mask(0,PartRadius);// only for online use can be remove for performance
       }
     }
 }
 }
 output();

```


[User]
Hey there! I'm looking to design a tank holder for my CO2 tanks, similar to the one I found online, but I need it to be parametric so I can adjust it for different tank sizes, and I'd like to make a few tweaks. I'm thinking this should be a pretty simple project overall.

Essentially, it's a cradle to keep a CO2 tank from rolling around in the car. The basic design is a rectangular block with a half-cylinder cut out of the top to hold the tank, and then supporting triangle pieces attached to the sides of the block for extra stability.

Here’s what I envision:

1.  **Tank Diameter:** This needs to be a parameter, obviously. I need to be able to easily adjust this for different tanks.
2.  **Holder Length:** I want to be able to adjust the length of the rectangular part of the holder.
3.  **Holder Width:** I'd like the width of the holder to be a percentage of the tank diameter, also configurable.
4. **Base Minimum Thickness:** This should be a parameter so I can specify the minimum thickness of the material at the base.
5.  **Triangle Inset/Thickness:** I need to control how thick the triangular side supports are. I want that to be a specific measurement and for the triangles to have an inset that is relative to that value (essentially the depth of the triangle)
6.  **Cutout:** The cutout should fit the diameter of the tank plus a bit of clearance.

I would like the triangular supports to extend in both directions (lengthwise) from the base block (not on the top or bottom, if that makes sense). I'm not sure if that's clear, but I can probably explain better if it's needed.

I'm thinking this could be designed using OpenSCAD - it should be straightforward with the `difference()`, `cube()`, `cylinder()`, `translate()`, `rotate()` and `linear_extrude()` functions. I expect the code to be fairly simple.

Could you generate the OpenSCAD file(s) for me? No need to use any libraries, I'm fine with the standard primitives. Thanks!

[Assistant]
TankHolder.scad:
```
//===========================================================================
//
// C02 Tank Holder/Cradle
//
// Use this to keep the tank from rolling around in the car when driving
// back and forth from your beer gas supplier.
//
// This part was designed 21 September 2018 by Joe McKeown.
// It's available under the terms of the Creative Commons CC-BY license
// (https://creativecommons.org/licenses/by/3.0/).
//
// History:
// V1.0 21 Sep 2018 First version
//===========================================================================

/* [Hidden] */
// For reference use
MM_PER_INCH=25.4;
FiveLbTankDiameter=5.25*MM_PER_INCH; /*133.35 mm*/
TenLbTankDiameter=6.875*MM_PER_INCH; /*174.625 mm*/
//I found these numbers here:
//https://www.homebrewtalk.com/forum/threads/size-difference-between-5lb-and-10lb-co2-tank.289674/
//I don't personally own a 10lb tank, but the chart matches what I measured on the 5 gallon.

/* [ Dimensions ] */
// Diameter of the tank in mm (5lb->133.35mm, 10Lb -> 174.625)
tankDiameter=133.35;
// Lenght of the holder in mm along tank axis
holderLength=100;
// Width of the holder
holderWidth=0.75*tankDiameter;
// Minimum thickness of the base in mm
baseMin=3;
// Triangle inset (thickness of cross pieces)
tInset=5;

tInset2=tInset/2;
tLen=holderLength/2-tInset2;
tWid=holderWidth/2-tInset2;
module tank(){
  translate([0, 0, tankDiameter/2 + baseMin]) rotate([0,90,0])
  cylinder(d=tankDiameter, h=1.5*holderLength, center=true, fn=100);
}

difference(){
  translate([0,0,tankDiameter/4])
    cube([holderLength,holderWidth,tankDiameter/2], true);
  translate([0,0,-1]) linear_extrude(tankDiameter/2 +2) union(){
    offset(-tInset) polygon(points=[[0,0], [ tLen,-tWid], [-tLen,-tWid]]);
    offset(-tInset) polygon(points=[[0,0], [ tLen, tWid], [ tLen,-tWid]]);
    offset(-tInset) polygon(points=[[0,0], [-tLen, tWid], [ tLen, tWid]]);
    offset(-tInset) polygon(points=[[0,0], [-tLen,-tWid], [-tLen, tWid]]);
  }
  tank();
}
%tank();

```


[User]
I'd like to generate some Lego Duplo-compatible bricks, and I need a parametric OpenSCAD file to do it. I'm thinking the main parameters should be:

*   `X_size`:  The length of the brick in studs (e.g. 3 studs long).
*   `Y_size`: The width of the brick in studs (e.g. 2 studs wide).
*   `Height_factor`: A multiplier for the standard brick height; 1 would be standard, 2 would be twice the standard height, etc.
*   `Studs`: A boolean value (1 or 0) to turn the top studs on or off.
*   `Extended_Ridges`: A boolean (1 or 0) to add extended triangular ridges at the base.

The basic dimensions of a Duplo stud should be 15.75 mm apart. A standard height brick should be 19.25 mm high. I'll need to use these as a basis for my parameters. The walls of the brick should be 1.29 mm thick. The top surface should be 1.4 mm thick. The stud should have an outer radius of 4.7 mm. The internal cylinders should have an outer radius of 6.6 mm and the cylinder walls should be 1mm thick. The internal ridge thickness should be 1 mm, with an extension width of 3.1 mm.

The output should be a single brick with the specified dimensions. There should be an option for extended triangular ridges on the base, in addition to the regular internal ridges.

[Assistant]
duplo_generator.scad:
```
//
// LEGO DUPLO BRICK GENERATOR
//
// Author: Emanuele Iannone (emanuele@fondani.it)
//
// Url: https://www.thingiverse.com/thing:3113862

/* [Main] */

// Size along X axis (in studs)
X_size = 3;

// Size along Y axis (in studs)
Y_size = 2;

// (1 = standard brick height)
Height_factor = 1;

// Enable or disable studs
Studs = 1; // [0:No studs, 1:With studs]

// Add extended triangular support ridges
Extended_Ridges = 0; // [0:No extended ridges, 1:Add extended ridges]

/* [Advanced] */
// Size of a single stud (in mm)
base_unit = 15.75;
// Standard height of a block
std_height = 19.25;
// Vertical walls thickness
wall_thickness = 1.29;
// Top surface thickness
roof_thickness = 1.4;
// Stud outer radius
stud_radius = 4.7;
// Internal cylinder outer radius
cyl_radius = 6.6;
// Internal cylinder thickness
cyl_thickness = 1;
// Ridge thickness
ridge_thickness = 1;
// Ridge extension (control grip)
ridge_width = 3.1;

brick(X_size, Y_size, Height_factor, Studs);

module brick(nx, ny, heightfact, studs=true){
    height = heightfact * std_height;
    dx = nx * base_unit;
    dy = ny * base_unit;
    union() {
        // Shell
        difference() {
            cube([dx, dy, height]);
            translate(v=[wall_thickness, wall_thickness, -1]) {
                cube([dx - (wall_thickness * 2), dy - (wall_thickness * 2), height - roof_thickness + 1]);
            }
        }

        // Studs
        if (studs) for (r=[0:nx-1])for (c=[0:ny-1]){
            stud((base_unit/2) + r * base_unit, base_unit/2 + c * base_unit, height, stud_radius);
        }

        // Internal cylinders
        if (nx > 1 && ny > 1) for(r=[1:nx-1]) for(c=[1:ny-1]) {
            internal_cyl(base_unit * r, base_unit * c, height - roof_thickness + 0.1);
        }

        // Ridges
        ridgeset(0, 0, 0, nx, height);
        ridgeset(dx, dy, 180, nx, height);
        ridgeset(0, dy, -90, ny, height);
        ridgeset(dx, 0, 90, ny, height);
    }
}

module stud(x, y, z, r){
  translate(v=[x, y, 1.875 + z]){
    difference(){
       cylinder(h=3.75, r=r, center=true, $fn=100);
       cylinder(h=4, r=r-1.5, center=true, $fn=100);
    }
  }
}

module internal_cyl(x, y, h) {
    translate(v=[x, y, 0]) difference() {
        union() {
            cylinder(h=h, r=cyl_radius, $fn=100);
            translate([0,0,h]) {
                rotate([-90,0,45]) linear_extrude(height = ridge_thickness, center=true)
                    polygon([[-base_unit*0.7,0],[base_unit*0.7,0],[0,14]]);
                rotate([-90,0,-45]) linear_extrude(height = ridge_thickness, center=true)
                    polygon([[-base_unit*0.7,0],[base_unit*0.7,0],[0,14]]);
            }
        }
        cylinder(h=h*3, r=cyl_radius-cyl_thickness, center=true, $fn=100);
        cube(size=[cyl_radius*2, 1, 10], center=true);
        cube(size=[1, cyl_radius*2, 10], center=true);
    }
}

module ridgeset(x, y, angle, n, height){
    translate([x, y, 0]) rotate([0, 0, angle]) {
        for (i=[1:2*n-1]){
            // Ridge
            translate([(i*base_unit - ridge_thickness)/2,0,0]) rotate([90,0,90]) {
                if (Extended_Ridges) {
                    linear_extrude(height = ridge_thickness, center=true)
                        polygon([[0,height - std_height],[0,height],[10,height]]);
                }
                if (i % 2) cube([ridge_width, height, ridge_thickness]);
            }
        }
    }
}
```


[User]
I'm looking to design a customizable gift box using OpenSCAD. I've seen a design I like, and I'd like to make my own version, with even more parameters.

Here's what I'm thinking:

**Core Box Structure:**

*   The box should consist of a bottom part (base) and a top part (cap).
*   I need to be able to specify the box's width (x-dimension) and length (y-dimension) independently.  I want to be able to make rectangular boxes, not just square ones.
*   I'll need control over the height of both the base and the cap separately, for total height.
*   I want to specify the corner radius as a percentage of the box's *x-dimension*, not just a fixed number.
*   I need to be able to adjust the number of perimeters (wall lines) for both the box base and the cap separately. This needs to be tied to an extrusion width for different nozzle sizes.
*  I also need control over the number of top/bottom layers. This is important for setting up proper shell thickness.
*   There should be a slight transition between the base and the cap.  I'd like to control the height of this transition, which affects how well the top and bottom will fit together.
*   For the basic box structure, I'll need functionality similar to `linear_extrude`, `minkowski`, `rotate_extrude` and `offset` - and to handle the differences created for walls and shells.

**Ribbons & Ornament:**

*   There should be two ribbons, a primary ribbon and a secondary ribbon.
*   The ribbons should wrap around the box, each going around a different side of the box, and should have separate width parameters. The top ribbon should run along the *x-dimension* of the box, and the secondary along the *y-dimension*.
*   I need to control the gap between the ribbons and the box, and the gap between the primary and secondary ribbons.
*   The primary ribbon should also include an ornamental top section. I need several customizable top ornament shapes, and the ability to define the number of "elements" in the ornament.

    *   The ornament shapes I'm looking for are:
        *   Rounded (a simple circular arc)
        *   Inverted rounded (a rounded shape that cuts *into* the ribbon)
        *   Zigzag (a series of angled lines)
        *   Heart (a stylized heart shape)
    *  The size of the ornament should be controlled by a percentage of the box *x-dimension*.

*   The ribbons and ornament also need to have adjustable perimeters (like the box walls), tied to the extrusion width.
*   The ornament should be added as an additional extrusion.

**Printing:**

*   I want a 'render' parameter to quickly enable the rendering of the entire box assembly, or individual parts (box base, box cap, primary ribbon, secondary ribbon, ornament, and the ornament with ribbon).
*   I also want to be able to choose a 'standard' or 'vase' print mode. Vase mode should have zero top/bottom layers, and the walls should only use one perimeter, ignoring the number given.

**Other Considerations:**

*   I want to use variables for things like `$fa` and `$fs` to control the polygon quality.
*   I am looking for a clean and parametric design that is easy to customize.

Can you generate the OpenSCAD code for me, taking all of these parameters into account? I want to be able to easily adjust the values and see the resulting changes in the preview.

[Assistant]
ribbon-box.scad:
```
/*
 * Customizable Gift Box - https://www.thingiverse.com/thing:3114226
 * by ASP3D - https://www.thingiverse.com/asp3d/about
 * created 2018-09-23
 * version v1.0
 *
 * Changelog
 * --------------
 * v1.1 - 2018-09-29
 *  - [add] Ribbons gaps added
 *  - [fix] Some minor fixes
 * v1.0 - 2018-09-23:
 *  - [fix] Some minor fixes and andding comments.
 * v0.9 - 2018-09-22:
 *  - Initial design, printing, testing.
 * --------------
 *
 * This work is licensed under the Creative Commons - Attribution - Non-Commercial ShareAlike license.
 * https://creativecommons.org/licenses/by-nc-sa/3.0/
 */

/* [Printer params] */

// Walls will be based on this value (see "Walls and shells" section)
extrusion_width = 1;

// Bottom and Top shells will be based on this value
layer_height = 0.2;

// Choose "Solid" for vase mode printing or "Standatd" for other purposes. It is better to use "Standard mode" for preview and "Vase mode" for export, even you choose walls with 2-3 extrusions.
render_mode = 0; // [0:Standard mode,1:Solid - Vase mode]

// What part to render. Many other parameters as sizes, walls, shells, top ornament are in other sections
render = 0; // [0:Assembly,1:All parts,2:Box bottom,3:Box top,4:Primary ribbon,5:Secondary ribbon,6:Top ornament,7:Top ornament+Primary ribbon(std mode)]

/* [Gift Box Sizes] */

// Box width (top ornament located on this dimention)
box_size_x = 50;
// Box length (for square box, enter the same value as above)
box_size_y = 50;

// Base height (under cap)
box_bottom_height = 15;
// Cap height (total box height is (box_bottom_height + box_top_height)
box_top_height = 5;
// Corner radius
box_corner_radius_percent = 20; // [1:50]

/* [Ribbon] */

// Shape of the top ornament
ribbon_top_shape = 4; // [1:Rounded,2:Inverted rounded,3:ZigZag,4:Heart]
// Count of ornament elements
ribbon_top_param = 4;
// Size of ornament base on box width
ribbon_top_size_percent = 90; // [40:140]

// Width of main ribbon (with ornament)
primary_ribbon_width = 15;
// Width of second ribbon (enter the same value for equal ribbons)
secondary_ribbon_width = 15;

/* [Walls and shells] */

// How many extrusion lines do you want for box base
bottom_wall_lines = 1;
// ... box cap
top_wall_lines = 1;
// ... ribbons ans ornament
ribbon_wall_lines = 1;

// Count of box base layers (total bottom width will be (bottom_layers * layer_height)
bottom_layers = 3;
// Count of cap layers (total bottom width will be (bottom_layers * layer_height)
top_layers = 3;

/* [Extra] */
// Height of transition between box base and box cap. Too small value with 1 line perimeter may cause delamination. If you print with 2-3 lines perimeter, you may try to reduce this value
box_bottom_to_top_transition = 4;
// XY gap between box, secondary ribbon and primary ribbon
primary_ribbon_gap = 0.1;
// XY gap between box and secondary ribbon (without ornament)
secondary_ribbon_gap = 0.2;

/* [Hidden] */

$fa = 1;
$fs = 1;

box_corner_radius = box_size_x*box_corner_radius_percent/100;

bottom_wall_width = bottom_wall_lines * extrusion_width;
top_wall_width = top_wall_lines * extrusion_width;
ribbon_wall_width = ribbon_wall_lines * extrusion_width;

bottom_height = bottom_layers * layer_height;
top_height = top_layers * layer_height;

render_distance = 5;
primary_ribbon_middle_circle_radius = primary_ribbon_width * 0.2;

ribbon_top_type = 1;

ribbon_top_size = box_size_x*ribbon_top_size_percent/100;

ribbon_top_1_offset = (ribbon_wall_width/2)*0.5;

if (render == 0) {
    color("Yellow") {
        box_bottom_3d();
        translate([0, 0, box_bottom_height + box_top_height])
            rotate([180, 0, 0])
                box_top_3d();
    }
    color("Red") {
        translate([-secondary_ribbon_width/2, 0, (box_bottom_height+box_top_height)/2])
            rotate([0, 90, 0])
                secondary_ribbon_3d();
        translate([0, -primary_ribbon_width/2, (box_bottom_height+box_top_height)/2])
            rotate([0, 90, 90])
                primary_ribbon_3d();
        translate([0, -primary_ribbon_width/2, box_bottom_height+box_top_height+ribbon_wall_lines*extrusion_width+primary_ribbon_gap])
            rotate([0, 90, 90])
                ribbon_top_3d();
    }
} else if (render == 1) {
    translate([-box_size_x*3, 0, 0])
        union() {
            translate([box_size_x + render_distance, 0, 0])
                box_top_3d();
            translate([box_size_x*2 + render_distance*2, 0, 0])
                box_bottom_3d();
            translate([box_size_x*3 + render_distance*3, 0, 0])
                secondary_ribbon_3d();
            translate([box_size_x*4 + render_distance*4, 0, 0])
                primary_ribbon_3d();
            translate([box_size_x*5 + render_distance*5, 0, 0])
                ribbon_top_3d();
        }
} else if (render == 2) {
    box_top_3d();
} else if (render == 3) {
    box_bottom_3d();
} else if (render == 4) {
    primary_ribbon_3d();
} else if (render == 5) {
    secondary_ribbon_3d();
} else if (render == 6) {
    ribbon_top_3d();
} else if (render == 7) {
    primary_ribbon_3d();
    translate([-((box_bottom_height+box_top_height)/2 + ribbon_wall_lines*extrusion_width + primary_ribbon_gap + secondary_ribbon_gap), 0, 0])
        ribbon_top_3d();
}

module ribbon_top_3d() {
    ribbon_top();
}

module ribbon_top() {
    if (ribbon_top_type == 1) {
        rotate([0, 0, 90])
            ribbon_top_1();
    }
}

module ribbon_top_1() {
    linear_extrude(primary_ribbon_width)
        difference() {
            ribbon_top_1_all();
            if (render_mode == 0) {
                offset(delta = -ribbon_wall_width)
                    ribbon_top_1_all();
            }
        }
}

module ribbon_top_1_all() {
    difference() {
        union() {
            for (i = [0 : ribbon_top_param-1]) {
                offset(delta = -ribbon_top_1_offset)
                    ribbon_top_1_element(i);
            }
            circle(primary_ribbon_middle_circle_radius + ribbon_wall_width*2);
        }
        circle(primary_ribbon_middle_circle_radius);
        translate([-primary_ribbon_middle_circle_radius*20, -primary_ribbon_middle_circle_radius*40 + ribbon_top_1_offset, 0])
            square(primary_ribbon_middle_circle_radius*40);
    }
}

module ribbon_top_1_element(n) {
    if (ribbon_top_shape == 1) {
        ribbon_top_1_shape_1(n);
    } else if (ribbon_top_shape == 2) {
        ribbon_top_1_shape_2(n);
    } else if (ribbon_top_shape == 3) {
        ribbon_top_1_shape_3(n);
    } else if (ribbon_top_shape == 4) {
        ribbon_top_1_shape_4(n);
    }
}

module ribbon_top_1_shape_1(n) {
    size = 0.8*ribbon_top_size/2;
    angle = 180/ribbon_top_param;
    round_r = sin(angle/2)*size;
    rotate([0, 0, angle/2 + angle*n])
        hull() {
            circle(0.01);
            translate([size, 0, 0])
                circle(round_r);
        }
}

module ribbon_top_1_shape_2(n) {
    size = 1.25*ribbon_top_size/2;
    angle = 180/ribbon_top_param;
    round_r = sin(angle/2)*size;
    rotate([0, 0, angle/2 + angle*n])
        difference() {
            hull() {
                circle(0.01);
                translate([size, 0, 0])
                    circle(round_r);
            }
            translate([size, 0, 0])
                    circle(round_r);
        }
}

module ribbon_top_1_shape_3(n) {
    size = ribbon_top_size/2;
    angle = 180/ribbon_top_param;
    round_r = sin(angle/2)*size;
    rotate([0, 0, angle/2 + angle*n])
        polygon([
            [0, 0],
            [cos(angle/2)*size, sin(angle/2)*size],
            [size*0.65, 0],
            [cos(angle/2)*size, -sin(angle/2)*size],
        ]);
}

module ribbon_top_1_shape_4(n) {
    size = 0.8*ribbon_top_size/2;
    angle = 180/ribbon_top_param;
    anglep = 0.45*angle;
    round_r = sin((angle-anglep)/2)*size;
    rotate([0, 0, (angle-anglep)/2 + angle*n])
        hull() {
            circle(0.01);
            translate([size, 0, 0])
                circle(round_r);
        }
    rotate([0, 0, (angle+anglep)/2 + angle*n])
        hull() {
            circle(0.01);
            translate([size, 0, 0])
                circle(round_r);
        }
}

module primary_ribbon_3d() {
    linear_extrude(primary_ribbon_width)
        difference() {
            primary_ribbon();
            if (render_mode == 0) {
                offset(delta = -ribbon_wall_width)
                    primary_ribbon();
            }
    }
}

module primary_ribbon() {
    union() {
        rotate([0, 0, 90])
        square([box_size_x + ribbon_wall_width*2+primary_ribbon_gap*2, box_bottom_height + box_top_height + ribbon_wall_width*2 + ribbon_wall_width*2+primary_ribbon_gap*2], center=true);
        translate([-(box_bottom_height + box_top_height)/2 - primary_ribbon_gap - ribbon_wall_width*1.5, 0, 0])
            circle(primary_ribbon_middle_circle_radius*0.8);
    }
}

module secondary_ribbon_3d() {
    rotate([0, 0, 90])
        linear_extrude(secondary_ribbon_width)
            difference() {
                square([box_size_y + ribbon_wall_width*2+secondary_ribbon_gap*2, box_bottom_height + box_top_height + ribbon_wall_width*2+secondary_ribbon_gap*2], center=true);
                if (render_mode == 0) {
                    square([box_size_y+secondary_ribbon_gap*2, box_bottom_height + box_top_height+secondary_ribbon_gap*2], center=true);
                }
            }
}

module box_bottom_3d() {
    union() {
        difference() {
            minkowski() {
                linear_extrude(0.01)
                    square([box_size_x-box_corner_radius*2-top_wall_width*2, box_size_y-box_corner_radius*2-top_wall_width*2], center=true);
                rotate_extrude()
                    box_bottom_wall();
            }
            if (render_mode == 0) {
                minkowski() {
                    linear_extrude(0.01)
                        square([box_size_x-box_corner_radius*2-top_wall_width*2-bottom_wall_width*2, box_size_y-box_corner_radius*2-top_wall_width*2-bottom_wall_width*2], center=true);
                    rotate_extrude()
                        box_bottom_wall();
                }
            }
        }
        if (render_mode == 0) {
            linear_extrude(bottom_height)
                minkowski() {
                    square([box_size_x-box_corner_radius*2.1, box_size_y-box_corner_radius*2.1], center=true);
                    circle(box_corner_radius);
                }
        }
    }
}

module box_bottom_wall() {
    p1x = box_corner_radius + top_wall_width;
    p2y = box_bottom_height - box_bottom_to_top_transition;
    p3x = p1x - top_wall_width;
    p3y = p2y + box_bottom_to_top_transition;
    p4y = p3y + box_top_height - top_height - layer_height;
    polygon([ [0, 0], [p1x, 0], [p1x, p2y], [p3x, p3y], [p3x, p4y], [0, p4y] ]);
}

module box_top_3d() {
    difference() {
        linear_extrude(box_top_height)
            box_top();
        if (render_mode == 0) {
            translate([0, 0, top_height])
                linear_extrude(box_top_height)
                    offset(delta = -top_wall_width)
                        box_top();
        }
    }
}

module box_top() {
    minkowski() {
        square([box_size_x-box_corner_radius*2, box_size_y-box_corner_radius*2], center=true);
        circle(box_corner_radius);
    }
}

```


[User]
Hey, I've got this snowboard customizer idea and I need some help turning it into a proper parametric OpenSCAD design. I've got a basic version working, but it's a bit clunky, doesn't use the customizer, and I think a fresh start would be better.

Basically, I want to generate a snowboard with a few customizable features. Here's what I need:

1.  **Base Snowboard:** I've got an STL file for the base snowboard shape ("Snowboard\_without\_cramps.stl"). I need to import this into the design.

2.  **Name Customization:** I want to be able to add text to the snowboard, like a name. The user should be able to specify:
    *   The text itself
    *   The font size
    *   The X and Y position of the text on the board.

3.  **Snowboard Type:**  I want to have a few options for the board type, specified by an integer:
    *   Type 0: No extra features (just the base snowboard).
    *   Type 1:  Add six cylindrical "pins" to the board. These pins need to have a fixed position relative to the board itself (three per side, like a typical binding system). The user can specify cylinder radius. The position of the pins must be parametric.
     *  Type 2: Add a circular hole to the board. The user should be able to specify the diameter and location of this hole.

4.  **Leash:** The user should be able to add a cylindrical shape for a leash attachment point. This should be a cylinder located at a fixed spot. A boolean variable will be used to determine if this part is added.

The final output should be an STL file. All these settings should be fully customizable through the OpenSCAD Customizer interface. I'd really like to get rid of all those nested if statements, so please keep the code clean. Also, make sure to use proper module definitions for better code organization. I'd prefer if you used the `linear_extrude` instead of `text()` for writing the text. I'm also not too picky about specific libraries, so you can use whatever you think is best for this.  Thanks!

[Assistant]
SnowBoardCustomizer.scad:
```
/* [Settings] */

//name written in the middle
name = "Bic";

//word size (Default = 7)
word_font_size = 9;

//0 (empty), 1 (basic), or 2 (with round)
type = 0; // [0:empty,1:With pins,2:With Hole]

//0 (no) or 1 (yes)
leash = 1; // [0:yes, 1:no]

//It is the file name of your Snowbase file
snowbasefile = "Snowboard_without_cramps.stl";

word_x = -6;              //to adjust the word x placement (Default: -2)

//to adjust the word y placement (Default: -5)
word_y = 27; // [27:front, -5:middle]

module snow () {

    translate ([0,0,-7.2]) {
        import(snowbasefile);
        }
}

//Code

difference() {

union () {
if (type == 0) {

    snow();

}

if (type != 0) {
union() {
    translate ([10,-6.25,0.1]) {
    cylinder(r1=1.5, r2=1.5, h=3.9, center=false, $fn=100);
    }
    translate ([20,-6.25,0.1]) {
    cylinder(r1=1.5, r2=1.5, h=3.9, center=false, $fn=100);
    }
    translate ([10,-12.5,0.1]) {
    cylinder(r1=1.5, r2=1.5, h=3.9, center=false, $fn=100);
    }
    translate ([20,-12.5,0.1]) {
    cylinder(r1=1.5, r2=1.5, h=3.9, center=false, $fn=100);
    }
    translate ([10,-18.25,0.1]) {
    cylinder(r1=1.5, r2=1.5, h=3.9, center=false, $fn=100);
    }
    translate ([20,-18.25,0.1]) {
    cylinder(r1=1.5, r2=1.5, h=3.9, center=false, $fn=100);
    }
}
}

if (type == 1) {

    union () {

    snow();

    translate ([-10,-6.25,0.1]) {
    cylinder(r1=1.5, r2=1.5, h=3.9, center=false, $fn=100);
    }
    translate ([-20,-6.25,0.1]) {
    cylinder(r1=1.5, r2=1.5, h=3.9, center=false, $fn=100);
    }
    translate ([-10,-12.5,0.1]) {
    cylinder(r1=1.5, r2=1.5, h=3.9, center=false, $fn=100);
    }
    translate ([-20,-12.5,0.1]) {
    cylinder(r1=1.5, r2=1.5, h=3.9, center=false, $fn=100);
    }
    translate ([-10,-18.25,0.1]) {
    cylinder(r1=1.5, r2=1.5, h=3.9, center=false, $fn=100);
    }
    translate ([-20,-18.25,0.1]) {
    cylinder(r1=1.5, r2=1.5, h=3.9, center=false, $fn=100);
    }

}
}

if (type == 2) {

    difference() {

        snow();

    translate ([-24,-12.5,2.1]) {
        cylinder(r1=5, r2=5, h=1, center=false, $fn=100);
        }
    }

}

translate ([word_y,word_x,2.5]) {
    rotate ([0,0,-90]) {
    linear_extrude( height=3, twist=0, center=true){
        text(name, font = "Roboto", size = word_font_size*0.75);
    }
}
}

}

if (leash == 1) {
    translate ([-40,-12.5,0]) {
        cylinder(r1=2.5, r2=2.5, h=10, center=false, $fn=100);
    }
}

}
```


[User]
I need an OpenSCAD design for a frustum-shaped ring, kind of like a truncated cone but with a consistent thickness. I've got an example I made, but I'd like a more parametric version.

Specifically, I need to be able to define:

*   The inner diameter at the base of the ring.
*   The inner diameter at the top of the ring.
*   The height of the ring (excluding any rounded edges).
*   The thickness of the ring (which should remain constant regardless of the slope).

I'd also like to control the `$fn` value for the smoothness of the curves. The ring should be generated using the `hull` command so the thickness stays consistent even on the sloped surfaces.

I'm aiming for a ring shape, not a hollow cylinder. The description of my current code said "Use hull command, the thickness will not change according to the slope". It mentioned the constant thickness, so that was important. It was used as a fix for a broken pestle.

I don't need any additional features, just the basic frustum ring with the defined parameters and constant thickness.

[Assistant]
FrustumRing.scad:
```
////----FrustumRing.scad----
////----OpenSCAD 2015.03-2----
////----Kijja Chaovanakij----
////----2018.9.12----
////----Use hull command, the thickness will not change according to the slope.

/*[Var]*/
//number of fragments [30:low,60:medium,90:high,180:quality]
$fn=90; //[30:low,60:medium,90:high,180:quality]
//base inner diameter[44.6]
base_inner_dia=44.6;
//top inner diameter[39]
top_inner_dia=39;
//height of ring exclude round end[23]
ring_height=23;
//thickness of ring[2.3]
ring_thick=2.3;
//total height
total_height=ring_height+ring_thick;
echo("total_height",total_height);

////----main----
color("LightGreen")
rotate_extrude(angle=360,convexity=10)
  hull(){
//bottom ring
    translate([base_inner_dia/2+ring_thick/2,0,0])
      circle(ring_thick/2);
//top ring
    translate([top_inner_dia/2+ring_thick/2,ring_height,0])
      circle(ring_thick/2);
  }//h
//

```