[TheForge] Re: Rust Patina Finish

[Mike Spencer]

> Read about it years ago and can' t remember for sure but seems like
> phophoric acid is part of the parkerized finish on military firearms.
>
> Randy Mundt

Okayyy.  "Parkerized" is the key word.  Sounds like it might be a bit
messy for a driveway gate but worth a try for small, pricey items.

   http://members.tripod.com/T6Aluminum/Parkerizing.htm

Usual safety warning but no truly nasty chemicals.

Good tip.  Tnx.

I've been cleaning up a couple of extremely rusty, wrought iron axe
heads.  Used the electrolytic method we've discussed here but used
dilute phosphoric acid instead of soda.  The pieces have a nice
uniform grey appearance and have shown no sign of rust after coming
out of the bath.  (The cleaning revealed the grain.  Both have
welded-in steel blades.  One has a re-inforcing piece welded crossways
of the grain of the main chink of iron to form a more sturdy poll.
The other has a poll formed from setting down the bar brfore forming
the eye.

- Mike

-- 
Michael Spencer                  Nova Scotia, Canada       .~. 
                                 						   /V\ 
mspencer@tallships.ca            						  /( )\
http://home.tallships.ca/mspencer/						  ^^-^^

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