Homebrew PCBs

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On Wed, 11/9/16, Kamen Lilov kamenl@... [Homebrew_PCBs] <Homebrew_PCBs@yahoogroups.com> wrote:

 Subject: [Homebrew_PCBs] Re: Heater for Etchant Bath
 To: Homebrew_PCBs@yahoogroups.com
 Date: Wednesday, November 9, 2016, 1:27 AM
 
 
  Hi,

Microwave?  Heh heh that's kewl. I'll have to try that.


8 minutes is very reasonable.

However, I reliably etch 6 mil traces in about 45 seconds, in a cup of hot acid using a sponge.  

We each have our own schemas, I tip my hat..

ic_sizzle

   
 
 
     
       
       
       Why would you heat it so hot as
 to let it fume?
 I've  been using FeCl for years, heated to about 50C / 130F in a
 microwave oven. I did not care to get a heated tank, or put
 in air bubbles.

 Etches anything in about 8 minutes (maybe 9 if there is too much
 copper to take). I tie a piece of wire in a hole in a corner
 of the PCB and agitate constantly. 8 minutes is not too much
 of my time. Perfect results.

 I know with very heated FeCl you can
 do it in 4-5 minutes, but is it really  worthwhile?
 
 
 
     
      
 
     
     
 
 
 
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