Homebrew PCBs

Thank you, I think I get the point. Just have two questions about.

"and put the
board and transparency on the glass. I then put a heavy book on top of the
board to ensure it is pressed down. "

I can't see what you say... Sorry. as this may sound stupid.. but..I
put the PCB on top of glass?? the glass on top?? If you put a heavy
book on top, how can UV light expose the board??

the other question is regarding to UV light. I don't know where to get
these kind of lamps... I heard of some people usinf fluorescent lights
with fair results.. but I suppose it is not enough. I would like to
build one of those boxes you guys talk about. I suppose it will also
be usefull to erase EVPROMs..