Gear Generator by Koolm

What is Gear Generator by Koolm?

Gear Generator by Koolm is a free MakerWorld customizer that makes spur, ring, crown, bevel and worm gears and gear racks. It is one of the most popular parametric models on MakerWorld, with nearly 18,000 likes. Like the author's screw tool, it runs a BOSL2 OpenSCAD script behind MakerWorld's customizer, so you work with menus and number boxes instead of code.

Choose a gear type (spur, ring, crown, bevel or worm) or a gear rack, then set shared values such as circular pitch or module and tooth count. Each type has its own section for extras like helical angle, and spur gears can get round, D, keyway or spline bores and a hub with set screw holes. The script uses real gear parameters including pressure angle, so meshing pairs line up when you use matching settings. Generate, preview and download the result for slicing.

It is free with a MakerWorld account, and the author describes the script as open source under a CC BY license. It suits robotics, repairs, kinetic art and learning how gears work. Some gear terms will be new to beginners, but the defaults give a working gear to start from.

What you can make

• Spur gears
• Bevel gears
• Worm gears
• Ring and crown gears
• Gear racks

How to use Gear Generator by Koolm

1. Click Customize on the model page
2. Choose a gear type
3. Set pitch, tooth count and type-specific options
4. Generate and download