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

hi Grant,

I'm just letting you know that I'm doing another test reacting
copper and HCl. Its been about 30 hours now and the copper mass
is already 60% of original mass. The 1st 23 hours was just left
stagnant in open air, and the solution went a fairly dark color
over that time (you could still see through about 2 centimeters
of it). After 23 hrs I added more acid (HCl @ 5.5Molar) and
bubbled air. I'll post the results when all the copper has dissolved.

I cannot say what is happening with your solution. If the liquid
is still relatively clear after all these days then there must be
something terribly wrong.