OK, mine looks just like that but no etching. As I said in the earlier post, I let it heat and bubble for about 24 hours with no joy, so I added an additional 1/3 Cup of HCL...Muriatic acid that I use in my pool.
--- In Homebrew_PCBs@yahoogroups.com, <homebrew_pcbs@yahoogroups.com> wrote:
Forgot to mention.
here is what mine looked like.
http://thesn1per.blogspot.com/2013/06/diy-circuit-boards-tachometer.html
The color you see is the result after about 1 hour of mixing with a small piece of coper
bubbling the entire time. I used no heat. Im in Florida the ambient temp is quite hot as it is.
I tried heat on previous times the results ere the same.
I will add as time goes on the mixture will become a darker shade of green.
I hope this helps.
Sam
--- In Homebrew_PCBs@yahoogroups.com , "thesn1per" <mail4sam@...> wrote:
>
> 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.Â
> >
> > 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.
> >
>