PCB Fabrication at Home: Basics & Acids Needed

Join the discussion
Registration is free. Ask a follow-up in this thread, or start your own.
1 reply · 2K views
hisham.i
Messages
176
Reaction score
2
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 happened to my board...
What are the names of bases and acids used for this purpose?
 
Engineering news on Phys.org
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.