DIY Timing Pulley

I may have made an XL timing pulley.

Here’s how I did it.

I downloaded a pulley cad file at It was a DXF. I loaded it into Inkscape and cleaned it up. I then used a DXF importer plugin in Sketchup to load the file. After a lot of cleanup I had a pulley in Sketchup. I then used Phlatboyz plugin to generate the g-code.

I used a 1/32″ endmill and a slow cutting speed as I don’t want to break it since I only have one or two of those.