heat reating

Jan 15, 2004 2 Replies

I am a woodworker and I have never really done any smithing or metal work. But I just purchased some 01 precision ground steel 1/4" thick and 1.5" wide. I am interested in making several high quality wood hand plane. My question is after I from the plane iron to rough shape. Should I completely sharpen the iron before heat treating? Also what temperatures should I use and how should I go about the heat treating and tempering? I will be purchasing a small electric kiln for the heat treating process. the max temperature of the kiln is about 2300 degrees F.



Any help would be grate full, Kris


No. Get it close, but do the final grinding and honing after heat treatment.

That's plenty. For O1, the hardening temperature should be between 1450 and 1520 F. It is a very forgiving steel, so you should have little problem making excellent plane blades. A nice technical overview of O1 steel can be found here:

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Download the file AISI_O1.PDF.

Cheers!

JIm

A good little booklet on the subject is "Hardening, Tempering & Heat Treatment" by Tubal Cain. I see it on e-bay all the time for about $20 but if you're going to a book store it's ISBN 0-85242-837-5

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