I don't have any skills in wood working and don't know the first thing about how to choose / buy springs - or even where to buy them. However, I have a 3D printer (a huge one at that) and know a bit of CAD and arduino programming. So - here's my take on the Moire Illusion. I had some basic AutoCAD experience from my architecture days, but had forgotten most of it. So started building this on OnShape.com