Archive of the former Yahoo!Groups mailing list: Homebrew PCBs

Phil
I think you forgot to mention that there is a built in heater! Don't
show that around too much, it will take away the manufacturing edge you
just got! I hear you can get good deals on hcl and h202 in 55 gal.
increments, plus it comes in containers that make great project boxes
(at least for the projects I have to throw away).
Denny
The HCL is a little less than 30%, and yes, Savon Drugs & 3% on the
h2o2. I appreciate the help with the final % and ratios. I guess I'll
just go ahead and try the PP and ABS and hope it doesn't eat through
them. I still have to find a place to generate toner images for TT
(I've got 2 ink jets, no laser), I guess I'll just print it and then
copy it at work. I just gutted an old (85 manufacture date) copier, and
pulled the motor, fuser and some other parts, to make my own laminator.
That monster must have weighted over 100 pounds. I was just going to
throw it away, but it was way too heavy for me to carry downstairs and
to the dumpster, so I decided to field strip it in place and scavenge
what I could.
Mike
From what I've read on CuCl2 etching, there are a few things that
cause chlorine generation. Two of them: not enough copper, and too much
copper. When you are just starting with hcl&h2o2, you are way in to the
one regime. You need regime change, and only use, or dumping copper
into it will get you into the stable regime. In this case, application
of power, lead or unstable nitrates won't lead to regime change. ;^)
Thanks all,
Richard
Please don't take my 'regime change' comments as political comments, it
really just came out that way <G>. (Though I'm usually willing to argue
politics off line)