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1/4" thick blade for plane, shave, etc?

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Forum topic by Scrape posted 09-06-2011 09:56 PM 1079 views 0 times favorited 1 reply Add to Favorites Watch
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Scrape

21 posts in 1564 days


09-06-2011 09:56 PM

Topic tags/keywords: blade

So, I have some discarded lawnmower blades that I’m looking to cut up for use in homemade tools. Now, these are no ordinary little push-mower blades, these clearly came from something heavy duty, as the steel is 1/4” thick, maybe more.

Is that too thick for a plane blade? I was thinking of using it for a Krenov-style scrub plane. (I’m also considering a drawknife, but I think the thickness is just fine in that application.)

Follow-on question… would an angle grinder with a carbide cut-off wheel be enough to cut this stuff up? I gave it an obligatory attempt with a hacksaw, but that is clearly a losing proposition… I’d be running through a ridiculous number of blades.

Thanks!
-Rob

-- Rob "Scrape" French, Missouri


1 reply so far

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crank49

3510 posts in 1718 days


#1 posted 09-06-2011 11:38 PM

Metal cutting abrasive blades will cut it, but beware of the heat generated. It will affect the temper and hardness.

Mower blades are usually not very hard because they have to withstand huge impact loads without shattering. Nobody likes to see chunks of mower blade coming at them at 200 mph.

The thickness will not work in most planes that I know of, but you could make a wood body plane to hold whatever thickness you have, I suppose.

Should make a good froe.

-- Michael :-{| “If you tell a big enough lie and tell it frequently enough, it will be believed.” ― A H

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