Quote:
Originally Posted by 2152hq
The Carbonia process may not fully anneal 4140, but when dealing with and refinishing older firearms, most of the time you have little or no idea what the steel is. Nor do you know what the heat treat characteristics are, what temp/time they were drawn back to, or how what you are about to do may alter what has been done by the factory as an established safety criteria for a heat treated part.
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Right, exactly.
Quote:
Originally Posted by 2152hq
It's not an area you want to guess in my opinion,,but I've been known to be conservative when it comes to stuff like this.
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Agreed.
But do you think it'd be "safe" if you were only heating to the 500-550 F range? It seems like this level of heat is unlikely to bring about any significant changes...(?)