-----Original Message-----
From: Lew Palmer [mailto:lpalmer@mn.mediaone.net]
Sent: Tuesday, January 08, 2002 3:24 PM
To: 'Bullwinkle'
Subject: RE: To quench or not to quench
Barkeeper's Friend does not contain ammonia. Terry is right, the main
active ingredient is oxalic acid mixed with a mild abrasive powder.
Lew
-----Original Message-----
From: owner-mg-mmm@autox.team.net [mailto:owner-mg-mmm@autox.team.net]
On Behalf Of Bullwinkle
Sent: Tuesday, January 08, 2002 2:15 PM
To: MMM
Subject: Re: To quench or not to quench
Terry:
To SOFTEN brass (and maybe copper) you heat it to a very dull red
(lights off in a dark room) and immediately quench in water. That's the
process used to anneal cartridge cases at the mouth.
Do not use any cleaning compound on brass/copper that contains ammonia.
It causes hydrogen embrittlement. The same applies to cartridge case
brass.
Blake
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