Re: OT: Re-tempering cold chisel?


[Follow Ups] [Post Followup] [Dodge Power Wagon Forum]


Posted by Joe Lorenzino on Friday, May 21, 2004 at 10:56PM :

In Reply to: Re: OT: Re-tempering cold chisel? posted by HWooldridge on Friday, May 21, 2004 at 2:52PM :

That is actually a pretty good recipe you yave there. When I help put on demo's at the little blacksmith shop at our museum, we harden and temper all in one heat. We actually make chisels out of rebar at the demo's, and they work quite well. to do the heat treating in one go, use the same heating technique as H Wooldridge suggests, but when you cool it, only dip the first inch of the tool in the solution, and leave some visible heat in the part above the fluid level. Quickly use a stone,file, sand paper,etc (strip of emery cloth nailed onto the edge of a 2x4 works well) to clean the scale back from the cutting edge. As the heat from the back of the tool warms up the cooled section, the heat colors will start to appear on the cleaned section. Requench the whole tool when the edge just starts to turn from purple to blue. This method leaves only the extreme edge in a hardened state, with a softer "backup" area behind it, and once mastered, is very quick compared to multiple reheating. J.V.L.



Follow Ups:



Post a Followup

Name:
E-Mail:
Subject:
Message:
Optional Link
URL:
Title:
Optional Image Link
URL:


This board is powered by the Mr. Fong Device from Cyberarmy.com