This Whitney Hydraulic Punch Press is a workhorse in our shop! It's a hole-making-monster. The only thing I do NOT like about it is having to use your hand to control the up/down pendant. I wanted a footpedal! Factory version is $1,700!
Let's use our DIY know-how along with an Arduino and three Sparkfun Beefcake Relay's to make our OWN solution!
Videos below and Arduino Code at the bottom of the page!
Sparkfun BeefCake Relays: http://amzn.to/1wKWNn6
Arduino Board: http://amzn.to/1tXQey7