Projects for geeks

Robot wheel

17 Mar 2012

This is a project of the simple wheel. Since factory made wheels prizes are not very attractive (10€ for a piece of plastic does not look good), it’s cheaper to make it yourself. The wheel is optimized to be printed on 3D printer.


  • Outer diameter: ∅65mm (2.56 inch)
  • Shaft: ∅4mm
  • Width: 10mm
  • Wall thickness: 3mm
  • Weight: 20g
  • Material: ABS

How to make

You need 3D printer like Reprap Prusa, Makerbot or any other.

Additional parts

  • 1x M3 nut
  • 1x M3×10 screw
  • 20mm wide piece of bicycle tube



  1. Download attached STL file Robot_wheel_A2.STL and print it.
  2. Some printers make smaller holes then in project. Drill hole ∅4mm (or ∅5mm if you like) to fit your needs.
  3. Put small M3 nut into square hole.
  4. Screw M3×10 into nut.
  5. Put piece of gum as a tire. In the reference project 20mm wide bicycle inner tube was used.

Further extensions

Smooth backside of the wheel is ideal to stick encoder pattern.


File Robot_wheel_A2.STL114.05 KB