Re: Brake Hoses Redux.


Rob Kirkham <rdkirkham@...>
 

Well, you learn something new every day. Thanks for pointing that out Tony. I take it this turns out to be a tip for more effective brass modelling generally - quick cooling it to minimize oxidation and build up of unsolderable scale and gunk?

Rob

----- Original Message -----
From: "Anthony Thompson" <thompson@...>
To: <STMFC@...>
Sent: Thursday, November 01, 2007 9:09 PM
Subject: Re: [STMFC] Brake Hoses Redux.


Rob Kirkham wrote:
Unfortunately, the water dunk was counter productive. In metals work,
once its red hot you want it to cool slowly - fast cooling only
hardens it up again.
This would be true for steel, Rob, but not for brass. If anything,
cooling it quickly reduces oxidation during cool-down.

Tony Thompson Editor, Signature Press, Berkeley, CA
2906 Forest Ave., Berkeley, CA 94705 www.signaturepress.com
(510) 540-6538; fax, (510) 540-1937; e-mail, thompson@...
Publishers of books on railroad history




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