Hand Tools Archive

Subject:
Effect of hardness

Wiley Horne
Hi Bill and all,

This could be tested using the Tsunesaburo iron, provided someone has a hardness test setup. The test would be destructive.

Test:

1. Check Rc right now (david thinks it’s really high)
2. Do a test run, with photos.
3. Put iron in oven at 400-425F for a while, and retest Rc (IIRC 220C is the upper end of tempering advised by Hitachi).
4. Make another test run, and compare.

Wiley

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