#1
Hey,
I've posted this problem on the "Small Question Thread...", but i realised that it wasn't the best idea cause it was easily overlooked.

Well here's the problem. I've bought an old, used, custom shop bass. It would be a great instrument, but unfortunately last owner didn't adjust the truss rod at all, so the neck warped. Now it's virtualy impossible to play most of the notes on the neck. Some don't ring out at all, some have atrocious amounts of fret buzz, and some emit some wierd squeling sounds. I tried adjusting the truss rod - did one 1/8th turn to the left, and 1/4th turn to the right (first to loosen a little the unused truss rod, second to even out the neck) and the results are even worse. I didn't do any extreme adjustments. I've let settle overnight, but so far the results are far from good.

The photo is not that good, but you should be able to make out how the neck has warped :/

Do you have any suggestions taht can me done without dismantling the whole Bass? I'm not that good at doing any precise work, so i don't want to defret it and sand the whole thing... If all fails i'll end up giving it to some repair shop, but i'd rather save my money.

Any help apriciated.
Sorry for broken english,
Cheers,
Elbozo

PS. When i get to home i can tell you and which positions there are wierd, unwanted sounds.
#2
Thats sad
A new neck might help otherwise...try to take it to a guitar tech. Maybe they'll fix it somehow.
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#3
Which way is it warping?




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#4
Back-bow from nut to fret 9 and up bow from that fret... It's like a streched S.
#5
That neck looks like as very shallow "~" turned on it's side.
IMO, i think it'd just be easier to buy a new neck, as you can see how badly it's warped in the picture :s


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#6
That might be a good idea, but i'm don't have much cash right now. That kind of warp is unrepairable?
#7
If you are getting back bow then you are turning the truss rod the wrong way.

You must loosen the truss rod to correct back bow, e.g. a left turn when looking at the nut.




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#8
Ok, but what should i do when neck is warped into "~" shape? Loosen the truss rod then work out something else?
#9
I don't think thats possible to fix, unless you have dual truss rods.
Don't quote me on it, though.


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#10
theres a lot of "old school" tricks to fixing a warped neck. One that i havent tried but have seen people do.

Pour a few cups of water into a trash bag and tie it shut.
THen put it in the dryer long enough that the water is mostly vapor. Then put the bag over the neck for an hour or so and then make an adjustment. Doing this over the course of a couples days puts moisture back into the wood and something that is warm bends easier than something that isnt.

WIth neck that warped you dont have anything to lose by trying it.
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#11
Whoa, the thing you described TechnoLp seems like a last resort, but i think i'll try loosening the truss rod a little first, then we'll see...

Scowmoo: Tbh i have no idea what truss rod was installed in that neck. I have almost no knowledge about the origin of this bass, and most specifications were lost.

EDIT: Just thought of something. Maybe there is so much buzz all over the neck cause of back-bow, too big angle in neck-body joint and string action set too low? I will have to check that out, maybe the cause isn't lost. (it's a bolt-on neck so it might be feasible)
Last edited by El_Bozo at Nov 29, 2009,
#12
It's very possible.
Check it out, let us know what happens.


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