Silent Library – Groin-Punching Slot Machine

I modified an old slot machine to perform a complicated task: First, after the contestant pulled the slot machine’s arm the three tumblers were to spin and then stop so that a fist icon was facing forward. Next, lights were to flash, the winnings drawer was to drop open, and then a rubber fist would pop out and punch the contestant in the balls.

Unfortunately, I don’t have any pictures of the complete machine in operation on the set, since I was too busy flipping switches and pressing buttons to control the machine. The scissor-hinged punching mechanism was re-used in an ATM machine built for the show, so you can see it there too!