Hello Leon,
Monday, July 25, 2005, 4:48:51 PM, you wrote:
LH> ----- Original Message -----
LH> From: "hjf2k2" <
drgenio@...>
LH> To: <
Homebrew_PCBs@yahoogroups.com>
LH> Sent: Monday, July 25, 2005 3:42 PM
LH> Subject: [Homebrew_PCBs] black photoresist masters - darkening
>> Hi all, I'm still working on the serigraphy emulsion system. I think I
>> need to increase the exposure time to burn the emulsion a little
>> more. The problem is that I'm using transparencies with toner as
epa<SNIP>
LH> A similar technique I've heard of is to expose the transparency to some
LH> solvent fumes.
LH> Leon
LH> --
LH> Leon Heller, G1HSM
LH>
leon.heller@...LH>
http://www.geocities.com/leon_heller You have good ears!
Tonner can be exposed to paint thinner vapours (something that Stefan do not like), to acetone vapours or even vapours of solvent for PVC based colors for serigraphy
--
Sincerely,
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