[TheForge] Rust,pickling

Tue Aug 12 15:45:00 2003

Andy:  The discoloration you mention is the "salts" leaching out of small
joints on the surface.  This is common in "hot-salts" bluing of guns.  Most
gun refinishers allow a couple of days for te salts to fully emerge before
delivering the piece to the customer.

Grant
----- Original Message ----- 
From: "gladish" <[email protected]>
To: <[email protected]>
Sent: Tuesday, August 12, 2003 11:47 AM
Subject: [TheForge] Rust,pickling

> Last thing I used phospho on had a lot of white powder on the surface,
kind
> of like that flux discoloration on forge-welded items.
> Which leads to the next question: I did a couple of chandeliers with forge
> welded joints where the branches come out. Thought I had it brushed out
> right well, and here came the white stain after about a week. (fortunately
> they were for my house!)
> These pieces are too big to dunk in any pot I have right now- would
brushing
> on and rinsing off vinegar neutralize that staining?
> Thanks,
> Andy G.
>
> > Now you are making me think. OUCH. anyway, when you said pickle, I
thought
> > of nasty acids, which never stop eating through the steel. But
Phosporic,
> > now that could be something else again. Never actually used it myself,
but
> > all the big powdercoaters I have used have big tanks of the stuff, which
> > they dip the metal in before powdercoating, but after sandblasting.
Powder
> > sticks real good after that. But it doesnt leave the steel looking
normal-
> > kind of grayish. And they usually powdercoat right away- dont
> > leave it lying
> > around for even a few minutes. So I dont think it would be good for a
long
> > term finish without something else over it.
>
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