Homebrew PCBs

Try it on a sample of copper first. Don’t know for sure,but when you get heavy duty radiator cleaner for your car it is oxalic acid .they also put neutralizer in afterwards . thing is most radiators when you used it were made of brass , which is basically a copper alloy.

 

 

From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] 
Sent: Tuesday, July 04, 2017 12:37 PM
To: Homebrew_PCBs@yahoogroups.com
Subject: RE: [Homebrew_PCBs] Re: Ferric chloride staining PCB substrate

 

  

Thanks!!

 

Question – will Oxalic eat at the copper traces if I’ve removed the resist already?  I haven’t on one board but the other I have.

 

From: Homebrew_PCBs@yahoogroups.com [mailto:Homebrew_PCBs@yahoogroups.com] 
Sent: Tuesday, July 4, 2017 6:03 AM
To: Homebrew_PCBs@yahoogroups.com
Subject: Re: [Homebrew_PCBs] Re: Ferric chloride staining PCB substrate

 

  

Or just gho into the garden and pick some Rhubarb leaves, lots of Oxalic acid in them. Just don't eat any or drink what you make from boiling them or the grass will be growing green over your prostrate form.

Malcolm

I don't suffer from insanity I enjoy it! 
Mene, mene, tekel, upharsin 
The writing is on the wall. 
Ha-ktovet al ha-kir

--------------------------------------------
On Tue, 7/4/17, roylowenthal@... [Homebrew_PCBs] <Homebrew_PCBs@yahoogroups.com> wrote:

Subject: [Homebrew_PCBs] Re: Ferric chloride staining PCB substrate
To: Homebrew_PCBs@yahoogroups.com
Date: Tuesday, July 4, 2017, 3:20 AM


 









Oxalic acid is also sold as, "wood
bleach" usually findable in hardware or paint
stores.
Roy









#yiv3226884296 #yiv3226884296 --