A2 vs O1 Tool Steel

The Wood Whisperer recently touched on this topic, and has a very comprehensive reply from Ron Hock which is worth the read. (Hock was mentioned on here recently for his new range of carving knives)

O1 Tools Steel is a low alloy steel that can produce a very fine, sharp edge with an oil quench (thus the “O”)
A2 Tool Steel has more alloys in it, can be “A”ir quenched, and can benefit from cryogenic treatment (see my article on Steel for more info).

So if you are choosing what material you want to have for your plane or chisel blades, definitely an article worth considering.

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