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.