Homebrew PCBs

Pink? should be green or some shade of.
Sam

Read this.
http://members.optusnet.com.au/~eseychell/PCB/etching_CuCl/




--- In Homebrew_PCBs@yahoogroups.com, <twgray2007@...> wrote:
>
> OK, I tried bubbling air through the mixture for about 24 hours with no change.  I heated to about 40 C and placed a PCB in just to test and after about 25 minutes it had just started to turn pink from etching.  The volume was at about 1/2 gallon and to this I added about 1/2 cup of HCL and left the board in for another 30 minutes with little change.  
>  
>  I think I will now put a lot of copper wire in, at 40 C and let it run to see if it will "take off", as you put it. 
>