Gears
- Spur Gears:
- Pitch Circle = Module x Num of Teeth
- Spur Gear Design 1
- Spur Gear Design 2
- Helical Gears: transmit power efficiently and handle higher loads, allowing for smoother and quieter operation compared to spur gears.


Videos
- The Ultimate Makers Guide to Gear Boxes (Jeremy Fielding)
- How to make Custom Gears for Beginners (Jeremy Fielding)
- Why Harmonic Drives are Awesome (Jeremy Fielding)