Homebrew PCBs

On Fri, Apr 2, 2010 at 10:02 PM, Chris Maness <chris@...> wrote:

> Well, it sort of worked.  I think my contrast needs to be beefed up on my
> masque.  I had them print the transparency at Office Max.  Very good
> resolution, but not the contrast I need.  I was going to do it myself on the
> ink jet, but they wanted $50 for a small pack of ink jet transparencies
> which I think is totally ridiculous.
>
> Thanks,
> Chris Maness
>

Yea!!  It worked.  I used my laser printer at work with standard OH
transparency sheets.  It came out very dark and contrasty.  This time
exposed for 4:30s from 12" (small light source).  It took some time for the
developer to remove the exposed resist (positive board), but it etched very
nicely in CuCl2 and H2O2.  I also had a H2O2 bath to periodically remove
insoluble CuCl from the board while I was etching.  I would like to get a
bubble tank so I don't have to do that, but it worked very well.

I am now ready to drill my board for my movie sound project.  ;o)

Thanks,
Chris Maness
KQ6UP


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