Sprockets (pair) for beaded cord
This is a pair of push-fit sprockets for driving beaded cord in a Polargraph machine. These are 3D printed in polyamide (nylon) using an SLS process.
The hole has a small flat in it, that lets it engage a bit more positively with a grooved, or flatted motor shaft. The hole is a tight fit on a 5mm shaft, but you can do it by hand.