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Subject: Re: [Homebrew_PCBs] Dry film- negative resist... First attempt failure

From: Adam Seychell <a_seychell@...>
Date: 2008-10-21

lcdpublishing wrote:
> Hi guys,
>
> I tried my first photo process board this weekend and the process
> failed completely. I am using the dry film, negative resist from MG
> chemicals.

If you've never done exposures and this was your first PCB then it would
be almost guarantee a failure. Normally, a calibration step is made to
determine exposure time with the equipment. Without any preliminary
tests your just going to cause hours of frustration.
I'd agree with what all points other people have said.