Pinewood Derby wheel (unofficial)

When your seven-year-old son asks "Daddy, can you print me pinewood derby wheels?" there is only one correct answer, and it isn't "no".

This wheel was designed using drawings of the actual wheels and should be dimensionally accurate. Obviously under the most common derby rules you wouldn't be allowed to use these and it's unlikely they'd be smooth enough that you'd want to anyway, but hey it's fun anyway and my son was thrilled.

I've also included source files for the wood block so if you