Homebrew PCBs

I'd like to do that as well with the Muratic...question is what
does one DO with the spent etch?  Might not be so good
in a septic tank IF that is permitted to pour the stuff down
the drain.  Just asking...

Charlie

On 19 Jun 2016 09:01:49 -0700 "duwaynes@... [Homebrew_PCBs]"
<Homebrew_PCBs@yahoogroups.com> writes:
  
One explanation I was given is that the vinegar reacts with the chloride
in salt and produces a very weak hydrochloric acid.  I tried it but it
took forever to see any effect on the copper.  Much easier to go and get
a gallon of muriatic acid for $10. I only use about an ounce at a time 
along with 3 oz of peroxide and get boards etched in about 5 minutes.