Turing Tumble Virtual Pack

Good value, and slightly insane.

When I found out that there's pdf + stl/stp bundle available, I was amazed that someone would actually release the "source code" for the parts. Not only is the pdf version useful when I want to tinker with TT and I'm too lazy to pull out the box (because there's online simulator available). But should I ever find the need to print some additional part, it'd be no problem given the stl/stp files. Thank you, this is unprecendented... and very welcome.