[TheForge] File Making

[wmullett at bright.net]

Thinking furthur ... and probably too much.  I don't think any carbon will last long on the surface in the heat area before it is burned off.  I think that's why Cussler put his flintlock pieces to be case hardened in a crucible with lid.
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From: James Binnion <jbin at well.com>
Date: Wed Mar 19, 1:01 PM
To: GHS at execpc.com,  Sponsored by ABANA <theforge at mailman.qth.net>
Subject: Re: [TheForge] File Making

It can take hours for the carbon to migrate even a few thousandths of  
an inch. I think Dave is correct about the decarburization prevention  
and the reason for applying the powder at heat is so that it will melt/ 
stick to the surface.

> I may be exposing my ignorance here, but my understanding was that  
> the length of the heat in case hardening affected the depth of the  
> carbon enrichment.
> If the concern was hardening the sharpened edges on the file there  
> is not much to be had in terms of depth at that point.
>
> Might that be part of the answer?
>
> Mike Graf
>

James Binnion
jbin at well.com



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