On Sun, Jun 19, 2016 at 6:57 PM, 'Brad' unclefalter@yahoo.ca [Homebrew_PCBs] <Homebrew_PCBs@yahoogroups.com> wrote:
Yeah. I just have a hesitancy about muriatic, remembering some accidental burns years ago. J I accidentaly splashed a bit of this vinegar stuff on my hand in a moment where I forgot to put on gloves and nothing happened. That kind of thing with muriatic would be very bad. It etches beautifully – just really slow.
From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com]
Sent: Sunday, June 19, 2016 9:02 AM
To: Homebrew_PCBs@yahoogroups.com
Subject: RE: [Homebrew_PCBs] Etching with vinegar, peroxide and salt
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.
Message
Re: [Homebrew_PCBs] Etching with vinegar, peroxide and salt
2016-06-19 by Stefan Trethan
It's all a matter of concentration. You don't need all that high a concentration to etch, and you got hydrochloric acid in your stomach after all...
ST