a true craftsman

When he heated that axe head up and dumped into the bucket of what I assume is oil?

Is that how steel is tempered?

Anyone know which grade of oil is best to achieve a sharpenable edge?

Real nice video of a true craftsman at work by the way.

Thanks for posting it Cbug.

jomoco
 
I went to a couple welding classes in high school. When not sipping moonshine and making the pipe stands shoot flames I remember slow cooled and quick cooled was the tempering process. Dunking in water makes the steel case hardened and brittle, slow cooling in sand or oil makes a better knife.
 
Very impressive tree. I haven't pruned very many Pecans however in this past week I pruned two. Something I noticed is that they are very good at compartmentalizing decay. Some older heading cuts only had 1cm of discoloration.
 
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