STLGen

All generators › Gears and drives

Gear maker

Spur, helical and herringbone gears with real involute teeth.

Drag to turn, scroll or pinch to zoom. Grid squares are 10 mm.
Building the model…
Saves an STL file in millimetres, ready for your slicer.

Your download is starting

should appear in your downloads folder in a moment. Click here if it does not start.

Enjoying STLGen? Buy me a coffee and help keep it free.

Buy me a coffee

About the gear maker

Generate gears by module and tooth count with proper involute teeth. Choose spur, helical or herringbone, set the shaft hole, and read off the shaft spacing.

  • Gears mesh only if they share the same module and pressure angle.
  • Herringbone gears run quietly and stay centred on their own.
  • Add a little play between teeth if printed gears bind.

Everything runs in your browser: nothing is uploaded and there is no sign-up.

More generators