Homebrew PCBs

I'm considering HCL and peroxide.  I just got intimidated when I saw a video
and the guy showed all the steps required to handle it all safely.  Ferric
is a lot less troublesome.

 

I kind of liked the vinegar peroxide solution I was using.  The only problem
I had was that it was slow, and would often eat under the resist.  And it
seemed as though it had very limited staying power.  However to test my
theory that the ferric was discoloring the boards, I put a couple of scrap
pieces in and long after I thought the solution had worn itself out, the
next day I discovered it had etched all the copper.  So it's very slow but
still active. tempted to try a sample etching to see how badly it goes after
the resist if just left for the day.

 

From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] 
Sent: Monday, July 3, 2017 6:24 PM
To: Homebrew_PCBs@yahoogroups.com
Subject: [Homebrew_PCBs] Re: Ferric chloride staining PCB substrate

 

  

Simple:

Don't use ferric chloride. Try HCL and Hydrogen peroxide (which becomes
Cupric chloride) or the other old school etchant - Ammonium chloride.

 



 


 
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