My go-to is Parks 50 on all of the higher carbon steels like O-1, 52100, W2, 1095, etc. You should have no problem locating a lot of info on "why" here. May be a bit buried but worth the digging.
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Carl Rechsteiner, Bladesmith
Georgia Custom Knifemakers Guild, Charter Member
Knifemakers Guild, voting member
Registered Master Artist - GA Council for the Arts
C Rex Custom Knives
Blade Show Table 6-H
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