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Fretless neck problem help

Discussion in 'Basses [BG]' started by HassanIqbal, Feb 13, 2014.

  1. HassanIqbal


    May 4, 2013
    Hello, I have a carvin b5f (fretless) bass

    i recently noticed that the neck has a little forward bow and i don't know a lot about neck adjustment nor do I have any shops here where I can take this bass

    I tried to tighten the neck a little bit every day (since neck adjustment takes time), using the allen wrench clockwise , it doesn't work

    here is a picture

    I'm not sure if you can see the problem but help me out from what you understand
  2. HassanIqbal


    May 4, 2013
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  4. Jazz Ad

    Jazz Ad Mi la ré sol Gold Supporting Member

    This looks too straight to me.
    Neck adjustements are immediate.
  5. HassanIqbal


    May 4, 2013
  6. Jefff

    Jefff Supporting Member

    Aug 14, 2013
    Is it noting out?

    Is it buzzing...even for a fretless?

    WHat's the problem?
  7. HassanIqbal


    May 4, 2013
    the first 1-2 frets are really close to the neck so it doesn't hold a note like on other frets and when I hold first few frets, it makes a crunch sound as soon my hand leaves the fret after playing the note (i wouldn't call it buzzing but maybe that's what fretless buzz is)
  8. Jazz Ad

    Jazz Ad Mi la ré sol Gold Supporting Member

    Yep, neck too straight. You need to give more relief, not less. You need to untighten the trussrod.
    What happens here is that when you fret on first notes, the body of the string vibrates against the wood around 12th fret because it doesn't have enough room.
    The neck has to be curved to work. Vibrating strings are curved, not straight.
  9. tmsbandman


    Jan 17, 2013
    Atlanta area
  10. Jazz Ad

    Jazz Ad Mi la ré sol Gold Supporting Member

    Honestly, this is a legend. Trussrods make necks move right away and even very old ones don't need time to adjust, fortunately for luthiers who'd need 2 days to do a setup.
  11. Ease the tension on the truss rod about 1/4 to 1/2 of a turn at a time…take it slow in small increments and see if this fixes the problem.
  12. HassanIqbal


    May 4, 2013
  13. HassanIqbal


    May 4, 2013
    I still think I need to tighten the truss rod, since the bow seems forward near first fret, can someone explain that to me?
  14. It's hard to say for sure from just a picture, but I think I'd go slightly straighter and raise the bridge touch.

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