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Action Way to high

Discussion in 'Hardware, Setup & Repair [BG]' started by Ian_H, Feb 29, 2016.


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  1. Ian_H

    Ian_H

    Jan 14, 2016
    Hey guys,

    I built a DIY bass from eBay just for fun. Its Ibanez SR body style, 5 string. Everything is complete but the action is ridiculously high. I have adjusted saddles, filed down the string nuts and adjusted truss rod. Still very high. Any thoughts?
     
  2. mojomike001

    mojomike001

    Mar 28, 2013
    South Florida
    Shim the neck.
     
    gelinas666, pacojas and Aqualung60 like this.
  3. Ian_H

    Ian_H

    Jan 14, 2016
    Great I will be trying tonight. What material do you like to use for shims?
     
  4. mojomike001

    mojomike001

    Mar 28, 2013
    South Florida
    It can depend on the thickness. Sandpaper is good for thin shimming. Wood is ideal for thicker shimming. I've also used old credit cards and they have worked perfectly fine.
     
    dragon2knight and Ian_H like this.
  5. stonewall

    stonewall

    Jun 14, 2010
    ontario,Canada
    Adjusted truss rod? Explain what you did for this adjustment ?
     
    phillipkregg likes this.
  6. Ian_H

    Ian_H

    Jan 14, 2016
    I did a few 1/8 turns clockwise to help with the curvature of the neck thinking maybe it would give me lower action. Initially lowered saddles then shaved some off the sting nut. It helped some but still have way to much height. I will take any advise as I am a novice with bass set up!
     
  7. Pics of neck, bridge and nut would help.
     
    Fingerpickingood likes this.
  8. StonesG

    StonesG

    Feb 5, 2016
    Years ago I went to a hobby shop and got sheet balsa wood to use for shims. You can also use the cardboard from the back of a note pad if you need one in a hurry.

    Don't forget though that setup is an interactive process in that every adjustment effects every other.

    I usually bottom out the bridge saddles, tune up and start raising them slowly retuning often till the buzz goes away. All the while watching the neck for truss adjustment. Everything gets tweaked a little at a time until I'm satisfied.

    I'd only think of shimming if there were still a problem after all that.

    TG
     
  9. stonewall

    stonewall

    Jun 14, 2010
    ontario,Canada
    How close to perfectly straight does the neck look when lookin down from the headstock .
     
  10. Ian_H

    Ian_H

    Jan 14, 2016
    Last night it seemed straight looking down from the headstock after tinkering with it. It started with a slight inward concave. Like a slight back bow.
     
  11. JustForSport

    JustForSport

    Nov 17, 2011
  12. JustForSport

    JustForSport

    Nov 17, 2011
    Concave is forward bow,
    back bow lays the strings on the frets.
     
    bassliner50 likes this.
  13. alembicguy

    alembicguy I operate the worlds largest heavey equipment Supporting Member

    Jan 28, 2007
    Minnesota
    Old business cards work for shimming also.
     
    Bajo Clarkko likes this.
  14. StonesG

    StonesG

    Feb 5, 2016
    That pdf is fantastic.

    Saved.
     
  15. Ian_H

    Ian_H

    Jan 14, 2016
    Thanks guys for your help! Keep the info coming!
     
  16. stonewall

    stonewall

    Jun 14, 2010
    ontario,Canada
    I adjust mine to perfectly flat stright then i loosen just a small amount of releif say sn eight to quarter turn tops
     
  17. bdplaid

    bdplaid Supporting Member

    Aug 31, 2007
    So do new ones. :) I use my own business cards in case it gets nicked and I have to identify it.
     
  18. alembicguy

    alembicguy I operate the worlds largest heavey equipment Supporting Member

    Jan 28, 2007
    Minnesota
    Cool idea!
     
  19. phillipkregg

    phillipkregg Supporting Member

    Jun 8, 2010
    Nashville, TN
    I would watch this series of videos on truss rod adjustment if you are new to it:



    I'm sure others can offer good tutorials on this too.

    Really, you should not have to shave down the nut to get good action. I've had the best luck by first adjusting the truss rod to have a slight bit of relief and then letting the wood settle for a few days and then trying it again - no more than a quarter turn at a time. Sometimes once is all it takes.

    After the proper amount of neck relief, then lower the saddles a little.
     
    osonu and Ian_H like this.
  20. Ian_H

    Ian_H

    Jan 14, 2016

    Thanks I will check it out tonight
     

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