This is a press brake that I built a few years back. It produces 35-40 tons of pressure and will bend around 30" of 3/16" material in a 1-1/2" lower die.
I'm using an adjustable pwm wired to a stepper driver and a two way switch. It doesn't have a controller. You just hold the switch closed to make it move and you click a button to make it switch directions. The adjustable pwm is to speed it up or slow it down.
I unfortunately do not. My computer crashed, and I lost a lot of my old files. It's not an ideal design by anymeans, because I designed it around material that I already had on hand. If I was buying all new material, the design would have changed quite a bit.