MY S.E.L NUMBERS DON'T ADD UP

Discussion in 'Segmented Turnings Forum' started by SHAWN FERGUSON, Mar 13, 2018.

  1. SHAWN FERGUSON

    SHAWN FERGUSON New Member

    IF I HAVE 24 SEGMENTS EACH WITH A S.E.L. OF 1.093 (1.093X24) I GET 26.232. I'M GETTING A BOARD LENGTH OF 21.1. SHOULD THE BOARD LENGTH BE THE SUM OF THE S.E.L?
     
  2. Bob Beaupre

    Bob Beaupre Administrator Staff Member

    No the board length is the length of half of the pieces at the SEL and half of the pieces at the inside length, plus the with of your kerf.
    You flip your board as you cut your pieces.
     
  3. mfisher

    mfisher Super Moderator Staff Member

    Shawn.
    I made a quick ring that was 1.09 for a SEL in WTP. There is a column for Economy Board Length and one for Grain Match. In the Economy BL the stock is flipped as Bob said. In the grain match it is not.
    Economy came up with a BL of 19.97"
    Grain match came up with a BL of 29.1"
     
  4. SHAWN FERGUSON

    SHAWN FERGUSON New Member

    THANKS FOR THE RESPONSE GUYS. I CUT SOME SEGMENTS OUT OF SCRAP AND LINED THEM UP TO GET A VISUAL AND NOW I FEEL DUMB BECAUSE LOOKING AT IT, IT SHOULD HAVE BEEN OBVIOUS
    SEG 1.jpg SEG 2.jpg .
     
    Last edited: Mar 14, 2018
  5. mfisher

    mfisher Super Moderator Staff Member

    Don't beat yourself up. I had a more than one person approach me at the woodshop with the same question after building a vessel in WTP. Great visual for showing the difference between economy and grain match.
     

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