I got the backing plate from Extreme Lighting Displays. They cut it out with the holes etc already done. Layout was provided by Extreme Lighting Displays as well, but if you use JDeation for your layout it can be cut to suit easilyFirst year on my own house, so I'm doing lots of conduit, clips, magnets, drilling holes, and I would like a couple thousand more pixels to finish it off!
ooh, what did you use for the backing plate?