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Subject: Re: [Homebrew_PCBs] Re: Ferric chloride staining PCB substrate

From: Malcolm Parker-Lisberg <mparkerlisberg@...>
Date: 2017-07-04

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









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