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Thread: heat treating?

  1. #1
    Join Date
    Jan 2007
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    bloomington il
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    184

    heat treating?

    I just picked up a Lie Nielson 1/4 inch molding plane iron blank. Will be making a grooving plane with it. Should I put the bevel on be for or after I heat treat? Maybe just start making the bevel then finish after heat treat.

    I use a hand crank grinder so I an not to worried about over heating the blade.

  2. #2
    Join Date
    Feb 2004
    Location
    Perth, Australia
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    9,467
    I would partially shape the blade, then heat treat. A too-thin bevel when heat treated will be vulnerable. Removing some of the waste when the steel is soft appears to be a good idea. It is likely to gum up the wheel surface (especially cbn), however, so watch for this.

    Regards from Perth

    Derek
    Last edited by Derek Cohen; 11-16-2019 at 10:06 PM. Reason: dyslexic

  3. #3
    Join Date
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    Shaping it when it is soft can be done with a file to avoid gumming up the grinder.

    jtk
    "A pessimist sees the difficulty in every opportunity; an optimist sees the opportunity in every difficulty."
    - Sir Winston Churchill (1874-1965)

  4. #4
    Join Date
    Jan 2007
    Location
    bloomington il
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    Quote Originally Posted by Jim Koepke View Post
    Shaping it when it is soft can be done with a file to avoid gumming up the grinder.

    jtk
    Did not know it would gum up the grinder. I will use a file now.

  5. #5
    Join Date
    Jun 2005
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    Shorewood, WI
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    If you use a CBN wheel, grinding softened high carbon steel is said to be a problem. But with a hand-cranked grinder and an ordinary aluminum oxide wheel, I wouldn't expect a problem.

  6. #6
    Hard steel grinds easier that soft steel but id were using a hand crank grinder I would file it in the soft state first.
    Tom

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