Building the Everyday Work Knife: Build your first knife using simple knife making tools and methods by Joe Kertzman

Author:Joe Kertzman [Kertzman, Joe]
Language: eng
Format: epub
ISBN: 9781440233043
Publisher: F+W Media, Inc.
Published: 2012-05-01T05:00:00+00:00

OXYGEN/ACETYLENE TORCH

The oxygen/acetylene (A/E) torch is an excellent source of heat for the quenching process and one that I used for many years. I have used it to harden 3,000 or more blades. I stopped using it once I started building my homemade gas forges and using the one-brick forge. The only disadvantage to using A/E is the cost of the gas. Propane, when compared to acetylene, gives four times or more heating time. Although propane won’t get as hot as A/E, it is more than hot enough for our use.

The A/E flame is over 5,000 degrees F, but it is easy to learn to manipulate the torch and blade to get an even heat. It is wise to practice getting an even heat on a junk knife blade or piece of scrap steel.

The A/E torch is perfect for an edge-hardening quench in which only the edge portion of the blade is heated to the hardening temperature. The back of the blade remains at a temperature where it does not fully harden in a quench where the whole blade is submerged in the oil. Blades that are edge heated with the A/E torch can be edge quenched or fully quenched.

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