Homebrew PCBs

Why do they insist on giving it multiple names, its Hydrochloric Acid , in Spain it’s called Agua Fuerte and its noxious stuff. I think I slightly prefer Ferric Chloride but only slightly… You really need a fume cupboard or to use outside.
 
Dave
 
From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] 
Sent: 28 May 2016 02:32
To: Homebrew_PCBs@yahoogroups.com
Subject: RE: [Homebrew_PCBs] Re: Amount of etchant needed
 




Yeah I remember muriatic acid – used to use it to clean our pool.  That was seriously nasty stuff – I’m a bit uneasy about bringing it back into my life.  That’s why I was thinking etchant.  I can’t remember – you *can* pour it into a standard plastic tub right?
 
From: Homebrew_PCBs@yahoogroups.com <mailto:Homebrew_PCBs@yahoogroups.com>  [mailto:Homebrew_PCBs@yahoogroups.com] 
Sent: Friday, May 27, 2016 4:33 PM
To: Homebrew_PCBs@yahoogroups.com <mailto:Homebrew_PCBs@yahoogroups.com> 
Subject: [Homebrew_PCBs] Re: Amount of etchant needed
 
  
There is no need to order echant.   Go to the hardware store and buy a bottle of muriatic acid, peroxide at the grocery.   2 parts hydrogen peroxide and 1 part muriatic acid. Always add the acid to the peroxide to prevent splashing.   Wear gloves and eye protection.    Use is a well ventilated area.

The mixture is clear so it is easy to see when the etching is done.  Mix enough to cover the board.   Toss it when your are done as it is very cheap.  Don't poor down the drain.   Makes a great cleaner for sidewalk stains.   Cut with some water.