short swing Posted June 27, 2009 Share Posted June 27, 2009 I heard you can make a high carbon shell on mild steel. Like for a hammer or a hard cased tool. I was told to take the glowing finished tool and bury it in a bed of charcoal to cool. I guess the carbon collects on the outside and case hardens it. Is this true and if it is, how well does this work? Quote Link to comment Share on other sites More sharing options...
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