Gear Generator - Parametric Gears & Racks by KoolmMakerWorld: Download Free 3D Models

Koolm

Education>Engineering

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Print Profile(1)

All

P1S

P1P

X1 Carbon

X1E

A1 mini

H2D

Gear Types

Designer

58 min

1 plate

4.6(31)

Open in Bambu Studio

Boost

5510

11998

191

553

4.5 k

760

Released

Description

Looking for Gears? Look no further.

This OpenSCAD script lets you generate a wide variety of gears - spur, ring, crown, bevel, worm gears, and gear racks - all fully parametric and customizable. Built using the power of BOSL2, it uses real-world gear parameters like circular pitch, pressure angle, and helical angles to create functional, realistic gears. Whether you're designing for mechanical systems, learning about gear mechanics, or simply experimenting, this script has you covered.

Click on Customize to open the generator.

🚀 Quick Start

Select a Gear Type
Choose a gear type. Adjust general parameters like circular pitch and teeth count, which are shared across all types.
Customize Your Gear
Each gear type has its own unique parameters. Expand the relevant section (e.g., spur, bevel) and adjust those to your needs.
Render and Export
Generate your gear at the desired resolution, then export it for slicing and 3D printing.

⭐ Features

Multiple Gear Types
Generate spur, ring, crown, bevel, worm gears, and gear racks with ease.
Customizable Parameters
Adjust circular pitch, teeth count, pressure angle, helical angles, clearance and more.
Precision Modeling
Adheres to standard gear design principles for functional prototypes and gear ratio experiments.
Realistic Results
Create not just visual representations but fully functional designs that meet engineering standards.

This script is open source under a Creative Commons Attribution license - free to use, modify, and share with proper credit. Credits go to the BOSL2 library and team. Refer to gears.scad for full documentation. If you have GitHub, go show them some love with a star!

🛠️ Changelog

📜 Maker Scripts

Comment & Rating (191)

@MarinUs

Boosted

Finally someone that does something useful

The designer has replied

@koolm

Haha, thank you :-). Speaking of functional models, I'm nearly finished with a parametric implementation of ISO-compliant screws, nuts, and washers.

@user_1445441536

Boosted

Thanks to you I've sostitute a broken gear of an orange juicer despite the gears is't straight but have a little spiral. Can you implement straight teeth?

The designer has replied

@koolm

Hi @user_1445441536 , thank you for the support. Let's get that juicer fixed. Straight bevel gears will become available soon. Stay tuned!

@koolm

Version 1.3 is out 🚀. Now you can set the cutter radius for bevel gears. To create a straight bevel gear, simply set both the cutter radius and spiral to zero (see attached image). I'd love to see your results - let me know if I can feature a photo in the guide I'm working on!

@kioskun

This is amazing, I didn't know how to design gears for my projects so this works perfectly for when I'll need it, you could possibly also make a Rail generator to accompany this too!

The designer has replied

@koolm

Great to hear @kioskun . I will make sure to extend the script with racks, its on the list - stay tuned :-)

@pacosalasv

Replying to @koolm :

That will be amazing! 👏🏻

@koolm

Replying to @pacosalasv :

@kioskun @pacosalasv Version 1.1 is now out 🚀. It features gear racks and improved parameter controls.

(Edited)

@user_3052356292

Boosted

amazing Tool, wondering if there is going to be an option to make just the worm. would be a game changer. brilliantly made, and many thanks from me and my neighbor who loves his new costum gear

The designer has replied

@koolm

Hi @user_3052356292 , version 1.4 has just been released with support for (mating) worms 🎉. See the changelog in the post for more details. Have fun!

@user_3052356292

Boosted

Replying to @koolm :

amazing, what a timing and thanks for your quick answer! lets boost this file

@koolm

Replying to @user_3052356292 :

Appreciate it man, thanks :-)

@3DTechBase

Hi! What you did is great. I noticed a little thing that you should look at.

The designer has replied

@koolm

Good catch. Oddly enough, it works fine in my OpenSCAD software (see attached image). I will have to dig deeper to find out what's going on here, but It's probably related to the online customizer or the version of OpenSCAD. I will let you know once I have more details.

(Edited)

@koolm

Hi @3DTechBase , this issue is fixed in V1.2. Thanks for the report.

@3DTechBase

Replying to @koolm :

Thx!

@ArtifactWorksho

Boosted

Boosted. I might not be cool enough to build something with these right now- but i will someday and now have the tools. A generator like this is infinitely more useful than hundreds of models, because you know you have anything you want, and aren't storing anything you don't need. Arete! Excellence!

The designer has replied

@koolm

Appreciate it, and I'm sure you will. Arete!

@mrstolarsky

Sweet work Jason! I need to look into that over the weekend to see if I can get some bevel gear replacements for my Tatra Axle. I did design it with straight teeth since that was available in McMaster Carr add-on in Fusion.

The designer has replied

@koolm

Great to hear, good luck with the replacement!

@Karlosator

Print Profile

Gear Types

@draganov

Boosted

Great one. I print Some spur gear for my AC and work great.

The designer has replied

@koolm

Hats off, mission successful!

(Edited)

@runescope

Any possibility of getting a Geneva Gear in there?

The designer has replied

@koolm

Hi @runescope , unfortunately, the library does not currently support Geneva gears. However, I’ve looked into the math behind the mechanism, and I could definitely give it a shot. If I do implement it, it would likely be part of a separate script rather than this one. I'll add it to my ideas list, and if there’s enough interest, I’ll see what I can do. No promises, but I appreciate the suggestion!

@iPrintbot

Escape or scope? Lmaoo Old School RuneScape or RuneScape 3?

Show original

@amzoo

I just uploaded my Geneva Generator for you! https://makerworld.com/en/models/1074774#profileId-1065309

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v1.1	Added Gear Racks – Supports both straight and helical gear racks. Improved Parameter Controls – Enhanced parameters for finer control over gear properties.
v1.2	Fixed an issue with worm gears in the MakerWorld Customizer where top faces would connect.
v1.3	Added the ability to specify the cutter radius for bevel gears. Added support for straight bevel gears (set cutter radius and spiral to 0).
v1.4	Added a worm type that mates with a worm gear. Added support for defining gear size by module or circular pitch.