T2,5 gear with 16 teeth

I've tried printing pulleys but alas have never managed to get one that works,

This one had the profile done in Inkscape, extruded in OpenScad and then added to in FreeCad.

I printed it tested it and this is the first one I've found to work, actually it on my other printer right now. - the first thing I printed with the pulley was another one. ;-)

If you want to see more and how I create prints and 3D designs like this check out my YouTube channel.
https://www.youtube.com/channel/UCSHUc93NXGwBacoIDDqPU2w