Although he certainly achieves that, more or less, automating the classic toy is just the hook for a thorough lesson in CNC machine building starting with the basics. Fair warning: we said basics ...

The Ringmaker is a CNC machine created by Bulunmaz, It can create patterns on rings, bangles, and a range of other round objects. It has multiple spindles, with a maximum speed of 70,000 rpm.

A shopbot has an amazing rack gear system ... This isn’t to say belts won’t work — you can create a fine CNC machine with bits of rubber. However, belts stretch, they wear out, and if ...