Finger Racers

This is a little racing toy for fingertips:

• The model is oriented for easy printing. No supports should be needed. Plain bearing is print-in-place.
• The “pedals” are printed as one piece but breaks apart for press-fitting into the wheel hub. Clean up with a side-cutter if needed. The press-fit can be a bit tight, carefully use pliers if finger strength is not enough.
• The wheel needs a “tire” for more friction. I cut loops from an old bicycle inner tube. An easy alternative is to just wrap around with some duct tape or electrical tape, or use a broad rubber band.
  • It can be used without the tire but then works best where it is not too slippery, like carpets, vinyl or painted surfaces.