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Thread: Scraper plane blades

  1. #1
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    Scraper plane blades

    I want to make something like a stanley 112 scraper plane, My plan is to buy a replacement blade from veritas of Lie Nielson. Heres my question, Veritas has a thinner high carbon steel that comes standard on the plane and an optional 1/8th" A2 tool steel blade. The A2 blade is about 2x the price of the High carbon blade. Lie Nielsen's blade is 1/8th" A2 tool steel. Is the A2 is the "better" blade. Any thoughts about the blade thickness and A2 s high carbon steel, and anything in general about scrapers?

  2. #2
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    A2 is an "air hardening" steel, which means its great benefit is that it'll hold its hardness up to a higher temperature than ordinary high-carbon steels like O1 and W1. In a scraper for wood, that's totally meaningless unless you use yours a WHOLE lot harder than I do. No scraper should ever see annealing temperatures as it's used, and since it's sharpened with a file (and optionally a hand stone) before burnishing with a hand burnisher, it'll never see annealing temperatures as it's maintained.

    A2 isn't harder or stronger or tougher than common high-carbon steel. In fact, quite ordinary W1 takes & holds a better edge. W1 can be hardened harder, O1 distorts less during hardening & tempering, and A1 has higher heat resistance. Choice of tool steel really comes down to a choice between one of those three (unless you reach for one of the exotics).

    As to thickness... a 1/8" scraper blade sure seems like overkill. That'd be a blade you certainly couldn't bow if you tried. If you're counting on making a scraper plane that bows the blade (as a #12 or #112 would), you'll want about the thinnest blade you could muster.
    -- Tim --

  3. #3
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    Insider tip: Dunno if you'd be interested, but I believe Dominic Greco will soon be listing a variety of scrapers and scraper plane blades for sale at good prices. Keep your eyes on the Commercial Post Zone for more info.
    When the going gets weird, the weird turn pro. - Hunter S. Thompson
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    workingwoods.com

  4. #4
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    tim has it, i think your scraper term may be a low angle blade.. scrapers dont use thick blades..
    If in Doubt, Build it Stout!
    One hand washes the other!
    Don't put off today till tomorrow!

  5. #5
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    Heres what I was looking at
    http://www.lie-nielsen.com/catalog.php?sku=112
    down the page a little bit it says about the blade and the thickness of it. I figured since lie nielsen was using that it should be good

  6. #6
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    Quote Originally Posted by Dave Black View Post
    Heres what I was looking at
    http://www.lie-nielsen.com/catalog.php?sku=112
    down the page a little bit it says about the blade and the thickness of it. I figured since lie nielsen was using that it should be good
    your right its that thick.. learn something new everyday.. the old ones i had seen didnt have that thick of blade in the and they did flex as tim suggested.
    If in Doubt, Build it Stout!
    One hand washes the other!
    Don't put off today till tomorrow!

  7. #7
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    I don't know which would be better, I assuming the thinker one would be better since lie nielsen is using that instead of the thin one.

  8. #8
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    Quote Originally Posted by Dave Black View Post
    Heres what I was looking at
    http://www.lie-nielsen.com/catalog.php?sku=112
    down the page a little bit it says about the blade and the thickness of it. I figured since lie nielsen was using that it should be good
    I don't think I like that - wouldn't an inflexible blade leave "curbs"? You'd have to radius the corners to prevent it. I like a flexible scraper MUCH better, since the act of flexing it rolls the corners up off the wood's surface and lends the rigidity it takes to prevent chattering.
    -- Tim --

  9. #9
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    I've always wondered about the thicker blades myself. I've been using the thinner ones and can't really see an advantage to the thicker steel. On a bench plane, thicker cutting irons do a great deal to eliminate chatter. On my scraper plane, the tall angle of attack generally takes care of the chatter. If it's a particularly difficult piece of wood, i find scraping in a different direction, or a variety of directions takes care of any chatter.
    On the other hand, every Veritas plane i own is very well engineered and built. I've grown to have a lot of faith in their design.
    I wish i could test drive one with the thicker blade.
    paulh

  10. #10
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    I can't help much here but I believe that while a thin scraper held by hand allows you to work on a specific spot, with thick blades on a scraping plane force you to work on a more wide area to fix that same spot which eventually will give you a more uniformly flat surface, not to talk about less tiring in you fingers and hands.
    Best regards,
    Toni

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