Duncan Weir4 minPower Supply SwitchI have been meaning to do this for some time. I had the power supply and the switch but never seemed to get the time to put it all together. Plus the fact, it meant playing with hard-hitting electricity. It put me off because I am no electrician! But then I started to build the Piper 3D printer and I thought I would make this project just for that. I was trying to make this printer the “most perfect” printer that I had. I have built four printers from “kits” and after doing t