Homebrew PCBs

Forgot to add, cover glass can absorbe the UV required by the film, so you may need to experiment with that also..

Malcolm

I don't suffer from insanity I enjoy it! 
Mene, mene, tekel, upharsin 
The writing is on the wall. 
Ha-ktovet al ha-kir

--------------------------------------------
On Fri, 8/19/16, kbyrne10@... [Homebrew_PCBs] <Homebrew_PCBs@yahoogroups.com> wrote:

 Subject: [Homebrew_PCBs] First Negative developement Brd
 To: Homebrew_PCBs@yahoogroups.com
 Date: Friday, August 19, 2016, 1:36 PM
 
 
  
 
 
 
   
 
 
     
       
       
       I finally have all the supplies that I
 need and need a question
 answered.SuppliesScotch
 LaminatorOffice depot Black and white
 copier transparencies. Two copies of each experiment
 circuit.Dry film bought in
 ChinaPH up bought on
 E-BayEagle to Gimp
 negativeDakta light bulb approx 12 in
 above frame.Question? How long do I turn
 on light bulb for first experiment in developeing
 board.If it fails to develope properly
 how much time do I add for next
 experiment?What is correct procedure for
 this experiment to learn this aspect properly?
 
     
      
 
     
     
 
 
 
 #yiv9227428166 #yiv9227428166 --