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Thread: Length measurement issues

  1. #1

    Question Length measurement issues

    Hello all! Hope your New Year is going well!

    Hopefully someone can give me a clue on this issue!

    My board measures 60.125 by hand, the project board is listed as 59.789 because thats what the machine insisted it measured when I started. Now, having had to replace the Y bearings mid-carve, I'm trying to restart it, but it NOW says the board only measures 59.723! And no, the board has Not shrunk 0.066 in all the cold weather we've been having!

    I've been docking around with this sign since Harvey and it's been nothin but problems! Had to replace the Z motor mid-carve of the Top of the sign, then the Y bearings mid-carve on this one as I said, now This! I've remeasured about a dozen times to no avail, then I reset the calibration.Click image for larger version. 

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    Any clues would be appreciated!

    Thx, Lee (aka KiltedGunn)
    Attached Files Attached Files

  2. #2
    Join Date
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    Is that MDF? I believe it could have shrunk.... I know you don't believe it...

    AL
    Favorite Saying.... "It's ALL About the Brass Roller"..... And "Use MASKING TAPE" for board skipping in the X or breaking bits.

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  3. #3

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    No sir, its HDU foam board...and the hand measurement is slightly over 60 inches as pictured.

  4. #4

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    is the project centered on the board length? Just wondering if you can go back into designer and change the length to match what it is saying or shorter, then it will ask to center on board vs scaling.

  5. #5

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    It is centered on the board, but if I make too many adjustments now, then the bottom (this carving) won't match up to the top...plus it would change what's already been carved, if I understand correctly

  6. #6
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    Oct 2009
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    Ohio
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    Looks like it is actually 60.187 (60 3/16"). I'm just being picky but that is a 1/16" longer than 60.125 which is .062" longer, at least from what I can see from your picture. Are you using a sled or at least have masking tape on the bottom by the keypad side for the tracking roller?
    CarverJerry

    ver. 1.188 Win 7- 64b with 6 GB ram @ 2.8Ghz and dual 1Tb hard drives. Rock Chuck & Ringneck vacuum system hooked up to a Harbor Freight large vacuum. Center line text, conforming vectors.

  7. #7
    Join Date
    Feb 2008
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    With a board that is just over 5' long you will need in-feed and out-feed support. Also, make sure the in-feed and out-feed shelves on the machine are adjusted correctly. In the past, I have had many problems with long carves and most are attributable to not keeping the board exactly level during the carve and measurement phases. Any sag on the ends will cause the board to bow in the middle and lose, or partially lose, contact with the tracking roller. Also, make sure the board edges are exactly parallel. Any variance may cause binding. Loosening the sliding plate just a little after you crank down the head may help. Head pressure is a factor also.
    Last edited by SteveNelson46; 01-22-2018 at 08:29 AM.
    Steve

  8. #8
    Join Date
    Jan 2007
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    Quote Originally Posted by kiltedgunn View Post
    No sir, its HDU foam board...and the hand measurement is slightly over 60 inches as pictured.
    Agree... Foam board won't shrink.

    Back to the brass roller like posted above. Did the brass roller have a O ring before and not now? Or the other way around?
    Favorite Saying.... "It's ALL About the Brass Roller"..... And "Use MASKING TAPE" for board skipping in the X or breaking bits.

    Follow ME on Facebook http://www.facebook.com/pages/Accoun...50019051727074

    www.PoconoDigitalWoodshop.com

    www.AccountabilityTag.com


  9. #9

    Default

    You're right, Jerry, 60 3/16",, thanks!

    No sled, I built one, but it weighs a freakin Ton! Probably shouldn't have used MDF, huh?

  10. Default

    Thanks Steve! Yes, I have outfeed rollers on each end. They're the same height they were for the top piece carve, which worked fine. And yessir, the board is parallel...

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