A few nice aluminium machining images I found:
wheel truing stand
Image by hangdog
Used for straightening bicycle wheels, truing stands range in price from about 50 bucks up to, well, this German-made one.
My Aluminum Six-Sided Die
Image by Lena LeRay
This was the first addition to my original double handful of dice. It was machined from aluminum by a friend of the family as practice.