Results 1 to 5 of 5

Thread: Sharpening angle for LN 140

  1. #1
    Join Date
    Apr 2021
    Location
    Austin, TX
    Posts
    321

    Sharpening angle for LN 140

    Probably a simple question - what angle do you sharpen the blade at on a 140 skew block plane to control tear out? 40 deg? My version doesn’t have a knicker so I plan on using it mostly with the grain.

  2. #2
    Join Date
    Feb 2004
    Location
    Perth, Australia
    Posts
    8,555
    Hi Keegan

    It is not imperative to have a nicker for cross grain planing. Score the boundary with a sharp cutting gauge (such as a Japanese knife gauge or a wheel gauge), and work up against this. The line is knifed with heavy strokes at the start, and again after a few runs with the plane. This will keep the sidewall from tapering. If there is any tearout as you near the depth wanted for the rebate, as you are forming a rebate against the grain, finish with a shoulder plane planing with the grain.

    Regards from Perth

    Derek

  3. #3
    Join Date
    Apr 2021
    Location
    Austin, TX
    Posts
    321
    Thanks Derek. IÂ’ll try that out. Any thoughts on sharpening angle? Given that the skew lowers the effective angle, shouldnÂ’t I sharpen a secondary angle that is steeper to reduce tear out. Or does that defeat the purpose of the skew?

  4. #4
    Join Date
    Jun 2008
    Location
    So Cal
    Posts
    3,265
    On my 140 the bevel is about 28 degrees. I keep one primary bevel angle after some time and lots or stropping i restore the primary bevel.
    Its the same angle I use on my Apron planes.
    Good Luck
    Aj

  5. #5
    Join Date
    Feb 2004
    Location
    Perth, Australia
    Posts
    8,555
    Quote Originally Posted by Keegan Shields View Post
    Thanks Derek. IÂ’ll try that out. Any thoughts on sharpening angle? Given that the skew lowers the effective angle, shouldnÂ’t I sharpen a secondary angle that is steeper to reduce tear out. Or does that defeat the purpose of the skew?
    Hi Keegan

    Anything between 25-30 degrees is going to be fine. I hollow grind the bevel at about 28 degrees (I see Andrew does as well), and then it is a simple matter to freehand the edge as needed.

    Regards from Perth

    Derek

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •