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Re: [Homebrew_PCBs] Re: CuCl etchant - an update

2013-09-04 by Sam Rod

I myself have never used FeCl Im sure it works but Ive never tried it.
Seems to easy to get some off the shelf products and make your own.

I found the darker green it gets the faster it etches. I typicaly use 1 or 2 oz boards
and the time to etch is less than 13 mins. @ about 90f Fl heat 







On Sep 3, 2013, at 8:03 PM, <twgray2007@...> wrote:

> To clarify, the board was turning pinkish, like it does if you wipe a plated board with FeCl, starting to etch. 
> 
> 
> --- In Homebrew_PCBs@yahoogroups.com, <homebrew_pcbs@yahoogroups.com> wrote:
> 
> On Tue, 03 Sep 2013 23:46:25 -0000, you wrote:
> 
> >Pink? should be green or some shade of.
> 
> Pink was the color of the copper, not the solution.
> 
> Harvey
> 
> >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. 
> 
> >>
> 
> 



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