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PCB fabrication

  1. Aug 26, 2010 #1
    Hello, am trying to make pcb at my home, but am not sure about the sequence of fabrication steps.
    i put the board in UV light for several minutes, then i put it in a basic solution and finally in ana acidic one, but nothing happend to my board...
    What are the names of bases and acids used for this purpose?
     
  2. jcsd
  3. Aug 26, 2010 #2
    I got a kit from here:
    http://www.elexp.com/pro-pcb.htm
    If I remember correctly there is a developer for the exposed board and then a ferric-nitrate or some such etchant. If you get no image on the board after the exposure and development, and nothing etches, then I suspect you are way over-exposing -- possibly your transparency is not dense enough in the dark areas. If everything etches away then it's way under-exposed. I remember that I had a little brain-fade when I first tried the kit and didn't dilute the developer correctly, which lead to a seeming under-exposure condition too.
     
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