If you want to build your own Cyloidal drive, let https://www.pcbway.com take care of the machining.

This was one heck of a project, but I made it in the end. A (nearly) zerobacklash 4th axis for my home made milling machine.

If you want to follow the projects a little closer, head over to   / notanengineer  .

‪@InheritanceMachining‬ had to build a bigger box of shame because of me, go watch that NOW:    • How a machinist does woodworking...  



Sources:

‪@HowToMechatronics‬What is Cycloidal Drive? Designing, 3D Printing and Testing    • What is Cycloidal Drive? Designing, 3...  

‪@LeviJanssen‬Has a lot of great videos on cycloidal drives

‪@jamesbruton‬also has a lot of great videos on cycloidal drives

the best look inside a real cycloidal drive I could find: ‪@arduinoversusevil2025‬ (AvE) BOLTR: SUMITOMO CYCLO GEARBOX | Zero Backlash!    • BOLTR: SUMITOMO CYCLO GEARBOX | Zero ...  

Cycloidal Drive Parametric Equations https://blogs.solidworks.com/teacher/...

Fusion Script I modified: https://capolight.wordpress.com/2018/...

My modified version for drawing epitrochoids: https://pastebin.com/05iDZssp

‪@ROBRENZ‬'s large bore laps:    • MAKING AND USING LARGE DIAMETER LAPS  

Solid toolpost mount inspired by ‪@StefanGotteswinter‬