This is a milestone for me: It's the 250th column since the start of the Professor Hammer series in 1995! One of the things I really enjoy is the follow-up I receive from readers, who often have some ...

A spindle is the key component of any CNC router, which operators use to perform high-speed milling, drilling, engraving, and other such operations on their benchtop CNC mill. However, as the electric ...

I've drilled thousands of holes in stainless steel, and I've found it's best to use a very slow speed. Once stainless gets too hot, it instantly hardens, and the game is over after that. A ...