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Thread: Jumping bandsaw blade

  1. #1
    Join Date
    Feb 2007
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    Catalunya
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    Jumping bandsaw blade

    Hi guys.

    I've changed and adjusted properly ( or so I think) the blade of my bandsaw, it cuts OK but it jumps from time to time.

    Are there any further adjustments or checkings I could do to avoid this?

    I've checked the wheels alignment, the blade verticality in x and Y axis, the blade tension. I don't know why is this happening.

    Any help will be greatly appreciated.

    Many thanks in advance.
    Best regards,
    Toni

    __________________________________________________ __________________________________________________ _________________
    web site:http://www.toniciuraneta.com
    I also dream of a shop with north light where my hands can be busy, my soul rest and my mind wander...

  2. #2
    Join Date
    Dec 2007
    Location
    Tellico Plains, Tennessee
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    Toni,
    I'll be interested in the responses you get... mine does the same thing occasionally... I just thought it was either normal or I had the adjustments out of whack...
    Chuck
    Tellico Plains, TN
    https://www.etsy.com/shop/TellicoTurnings
    My parents taught me to respect my elders, but it's getting harder and harder to find any.
    If you go looking for trouble, it will usually find you.

  3. #3
    Join Date
    Nov 2006
    Location
    Delton, Michigan
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    17,475
    toni further explain (jumps) so those that know more than me can better understand the condition..
    If in Doubt, Build it Stout!
    One hand washes the other!
    Don't put off today till tomorrow!

  4. #4
    Join Date
    Nov 2006
    Location
    Mountain Home, Arkansas
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    Yes, please explain further what you mean by "jumps".
    By any chance, to you have a bent tooth or crimp somewhere on the blade?
    "Folks is funny critters."

    Think for yourselves and let others enjoy the privilege to do so, too. ~Voltaire

  5. #5
    Join Date
    Apr 2007
    Location
    No, not all of SoCal is Los Angeles!
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    Yes, some further description of the "jump" would help. Are you saying that the blade runs along normally and suddenly moves forward or backward in relation to the direction of cut? Is is a "jog" like the blade has caught on something while in motion? Inquiring minds want to know ;-)
    Any sufficiently advanced technology is indistinguishable from magic.
    - Arthur C. Clarke

  6. #6
    Join Date
    Oct 2009
    Location
    Bradford, Vermont
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    425
    We definitely need more clarification. Do you mean it bounces once every time it goes around (indicating a poor weld), or does it suddenly shift position frontwards or backwards, or does it leap off the wheels, tearing at the covers & exercising your puckermuscle?
    -- Tim --

  7. #7
    Join Date
    Mar 2007
    Location
    Southeast Pa
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    Often caused by the weld..

    Sometimes rounding over the both sides of the back of the blade with a stone will help. If the teeth don't match up properly at the weld there isn't much that can be done to help that blade. Save for rougher cuts...?

    Garry

  8. #8
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    Feb 2007
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    Quote Originally Posted by glenn bradley View Post
    Yes, some further description of the "jump" would help. Are you saying that the blade runs along normally and suddenly moves forward or backward in relation to the direction of cut? Is is a "jog" like the blade has caught on something while in motion? Inquiring minds want to know ;-)
    Thanks guys, the way Glenn describes it is the most close one, the saw is cutting smoothly and all of a sudden it makes a short shake as if it had caught a silica deposit in the wood or something harder within the wood.
    I neither have checked the weld nor the teeth, so I do not know if they are OK.

    I'll do it asap.
    Best regards,
    Toni

    __________________________________________________ __________________________________________________ _________________
    web site:http://www.toniciuraneta.com
    I also dream of a shop with north light where my hands can be busy, my soul rest and my mind wander...

  9. #9
    Join Date
    Oct 2006
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    somewhere east of Queen Creek, AZ - South East of Phoenix
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    8,529
    Toni,
    Try a differant blade.
    "There’s a lot of work being done today that doesn’t have any soul in it. The technique may be the utmost perfection, yet it is lifeless. It doesn’t have a soul. I hope my furniture has a soul to it." - Sam Maloof
    The Pessimist complains about the wind; The Optimist expects it to change;The Realist adjusts the sails.~ William Arthur Ward

  10. #10
    Join Date
    Feb 2007
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    Quote Originally Posted by Don Baer View Post
    Toni,
    Try a differant blade.
    Thanks Don. I think that will be the fastest way of finding out.
    Best regards,
    Toni

    __________________________________________________ __________________________________________________ _________________
    web site:http://www.toniciuraneta.com
    I also dream of a shop with north light where my hands can be busy, my soul rest and my mind wander...

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