Archive of the former Yahoo!Groups mailing list: Homebrew PCBs
Subject: developing double-sided PCBs
From: "Mark Farnell" <farnell_mark@...>
Date: 2003-07-16
I have an idea for developing double sided PCBs: One of the sides
are exposed first, then the exposed side is immediately sprayed with
sodium carbonate solution with care so that it doesn't run off the
edges of the PCB. Wait for a while. Then the Na2CO3 is wiped and
this process is repeated until the paint on the exposed area comes
off completely. The other side is then exposed afterwards.
What do you think about this approach?
Mark