Hand Tools

Subject:
That's what I do in 40 deg planes

Patrick Chase
FWIW I also use 30 deg cutting edges in my BD planes with 40 deg beds.

I have two smoothers, a 4 and a 4-1/2, configured with 40 deg frogs. I don't see much trouble with accelerated wear when using them on hardwoods, but I also use a notably abrasion-resistant steel (PM-V11).

On a related note, when I've used O1 irons in these same planes I've found that I prefer 28 deg edges. O1 is more prone to wear bevel formation but also more tolerant of low edge angles, and those two considerations may shift the optimum a bit (or I may just be imagining things. It's not like I did a double-blind trial).

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