On Apr 16, 8:35, Ethan Dicks wrote: there Yes, plenty of times. I use tracing film, but I suppose you could use transfer paper if you're careful (I've never tried it). I make sure I mark one of the corners and one edge of the layout exactly in registration on both layers. When I expose the PCB, I make sure the raw PCB is exactly lined up on that corner and edge for both exposures (both sides). It helps if the raw PCB is carefully cut! Transfer paper might actually be easier if oyu can do both sides at once, but you'd have to make sure it didn't stretch or warp. -- Pete Peter Turnbull Network Manager Dept. of Computer Science University of York