Homebrew PCBs

I've just noticed something that might be useful to other people using 
pre-coated boards.

I was using up some rather old off-cuts while I waited for some new material 
to arrive, without much success. The new material arrived this morning and I 
noticed that the faint yellow pattern on the resist after UV exposure was 
much more noticeable than it had been on the old stock.

Leon
--
Leon Heller
Amateur radio call-sign  G1HSM
Yaesu FT-817ND transceiver
Suzuki SV1000S motorcycle
leon355@...
http://www.geocities.com/leon_heller