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Subject: Re: black photoresist masters - darkening

From: "derekhawkins" <derekhawkins@...>
Date: 2005-07-25

> I wouldn't mind about the
> fogging, as long as it lets the light through.

Vellum lets the light through too. In other words the fogging negates
the gains from using transparencies in the first place. You can get the
darkened print without the fogging using xylol vapor.


--- In Homebrew_PCBs@yahoogroups.com, "hjf2k2" <drgenio@h...> wrote:
> --- In Homebrew_PCBs@yahoogroups.com, "derekhawkins"
> <derekhawkins@y...> wrote:
> > > It's a spray, cheap, about $7 for the local brand
> >
> > Was this "Laser Buddy" by any chance? While it darkens the print, I
> > find it "fogs" up the transparency somewhat. A respirator with
organic
> > vapor cartridges is definitely recommended when spraying that
stuff.
> > Got better results exposing the transparency to xylol vapor.
> No, it was a Spanish brand, "abezeta". I wouldn't mind about the
> fogging, as long as it lets the light through.