Homebrew PCBs

David:
Thanks for the good information.

Roland F. Harriston, P.D.
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David wrote:
>  
>
> Roland,
> My mistake on my last message, I use the Sodium Metasilicate based 
> developer for Positive Photoresist not negative photoresist!!, the 
> product from the dry film ebay supplier is a negative developer, 
> although, I have also used Ilford Perceptol Cat 1960529, primarily 
> used for BW film developing, but does a reasonably good job on PCB's 
> hope this helps
>