Having recently had students spinning yarn, I decided to make another shuttle for our community loom, as the one we’ve got has a crack in it. I snapped a photo of it, brought it into Illustrator, added a few guides, and was able to pretty quickly create a fairly similar copy.
I cut the shuttle out of 1/4 birch plywood using our laser cutter. It needs a bit of sanding and filing, but I think it will make a pretty decent replacement.
The files (Illustrator *.ai and PDF) and instructions are up on Thingiverse, or you can just grab the pdf here: simple_shuttle