This is right up your alley. Forget about the CNC sign making - make human body parts!
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can just imagine the conversations... "Gawd-DAMMIT! Who didn't replace the nipple cartridge in the printer?! Johnny, were you messing in here with your friends again? We already went over this - it's _not_ funny to attach body parts to your friends when they're sleeping. I swear one day I'm going to put a lock on the damn thing."
R