Take a sheet of copy paper and grip it flat in your hands. Next, gently push down evenly on both sides to form a smooth curve. Now, twist your left thumb up and your right thumb down. Ta-da! You have ...

Milling and routing flat surfaces is pretty much the point of a CNC router, but how about curved surfaces? Auto leveling of hobby CNC machines and 3D printers is becoming commonplace, but Scorch Works ...