Homebrew PCBs

--- In Homebrew_PCBs@yahoogroups.com, "joshdewinter" 
<joshdewinter@y...> wrote:
>   I saw a site a while back where a guy was using a PCB 
sensitizing 
> spray in a can.  It was from Europe...I can't remember what it was 
> called...GPC or something.  You just sprayed it onto a board, 
> exposed, developed and etched.   


G C Electronics  now owned by Waldom  website www.gcwaldom.com  They 
make a spray pos. photo resist.    Believe that Kepro use to have a 
neg. photo resist but they are no longer in business.  Right off 
hand I do not know of stocking dealers not a product that I normally 
buy.  Seems this topic was talked about several months ago.

Yes it is not a easy process to get it right, I tried it a long time 
ago and was never pleased with the results, after I think 3 attempts 
I quit, was only having maybe 2 out of 12 boards come out OK. Was 
spending way too much time for what I was getting out of it. 

I believe the best way is to apply resist is a dry film laminate.  I 
think you will find that it is easier to buy the boards already 
presensitized.  I buy the M.G. Chemicals pos. resist boards 600 
series.  They work good.  Good source is Circuit Specialist  
www.circuitspecialist.com  or www.webtronics.com  They carry in 
stock most items needed to make your PCBs as well as other parts.  I 
buy most electronic parts from Mouser Electronics and Allied 
Electronics.  Mouser is starting to carry some PCB materials again 
they had dropped most of it for awhile.  But Circuit Specialist 
currently has better pricing if you are buying 12 or more boards at 
a time.


Ben

Ben