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Subject: Re: [Homebrew_PCBs] Re: Building an etching tank?

From: lists <Stuartlists@...>
Date: 2011-01-27

In article <4D40D94B.1080709@...>,
Philip Pemberton <ygroups@...> wrote:

> JohnsonDiversey "Titan Sanitiser" works a treat for getting rid of FeCl
> stains. Rinse the sink out to dampen it, turn off the tap and count to
> ten. Cover the inside of the sink in the stuff (it's a powder) and rub
> it on the stains. Rinse away the remaining powder (it's water soluble).

Proprietry "Ferric Chloride stain remeover" is based on Oxalic acid.

--
Stuart Winsor

Midland RISC OS show - Sat July 9th 2011