All it took for [Bolsterman] to turn his mill into a key cutting machine was a 3/8th 90° countersink bit with the end ground to a flat approximately 0.055″ across (0.035″ is the width of a ...

The high hardness and brittleness of sapphire glass make it extremely difficult to process, and traditional grinding ...

The pattern behind the milling machine can be a good indicator of when to check the cutter head. "If the surface looks rough, stop the machine and inspect cutter tools and holders," says Munks.

Which to buy first, a lathe or a mill? It’s a tough question for the aspiring home machinist with limited funds to spend on machine tools, but of course the correct answer is a lathe.