Yahoo Groups archive

Homebrew PCBs

Index last updated: 2026-04-28 23:05 UTC

Message

Re: CuCl etchant - an update

2013-09-03 by thesn1per

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.  
> >  
> >  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. 
> >
>

Attachments

Move to quarantaine

This moves the raw source file on disk only. The archive index is not changed automatically, so you still need to run a manual refresh afterward.