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Concord neck repair

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concord - Concord neck repair Empty Concord neck repair

Post by challpa Sun Jun 14, 2020 3:34 am

Hi guys
I have a concord neck that has a twist in it that I need to put right. It has a lovely flame on the back and is definitely too pretty to bin.
Ive made myself a jig which should let me twist it back hopefully. Im currently soaking the neck to get some moisture into it
Heres a pic. Any thoughts or advice concord - Concord neck repair 20200614


Last edited by challpa on Sun Jun 14, 2020 3:39 am; edited 1 time in total (Reason for editing : duplicate pics)
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Post by corsair Sun Jun 14, 2020 4:16 am

Oh, nice - another cool project!!

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concord - Concord neck repair Empty Re: Concord neck repair

Post by Barry Sun Jun 14, 2020 11:28 am

If guitars were football players it would be the knees we'd be trying to fix. Pirouette

This seems to be the month for neck troubles, eh:
my goofy little Ovation, now your Concord, and if it makes you feel any better, there's a fellow over at the Parker forum who has a Fly model with a permanently bowed mahogany neck!

I'm not sure that I would "soak" the neck, you don't want to cause water damage on top of everything, but brushing some water on the raw wood or wrapping the neck in plastic with wet sponges inside to raise the humidity would add some flexibility.

Looks like you're doing everything right from what I can see, even to the point of removing the fret board. That can be clamped flat again once the neck is under control.

And I love the clamps!
Good stuff, it should come around OK methinks. Thumb Up

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Post by challpa Mon Jun 15, 2020 1:36 am

I bought this one from Damian as a project. I think he removed the fretboard as the truss rod was broken. Fretboard is pretty good. I have purchased a double acting truss rod so if she comes straight I will rout, fit truss rod and get the fretboard back on before it decides to twist again
I have wet the exposed part of the neck and wrapped with a wet towel and its mounted in the jig ready for adjustment.
Does anybody have experience regarding how long to soak before adjusting then how long to dry before removing from jig
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Post by corsair Mon Jun 15, 2020 3:42 am

Not me, Paul - I'm watching with a fair amount of interest, though!! :-)

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Post by Westbone Mon Jun 15, 2020 4:44 am

I'd soak it for about half an hour.

I did soak the fretboard and clamped it for a good few days 'till dried out.

Would do no harm to soak it again.

Looks like a nice jig you've made, should do the job... Thumb Up
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Post by challpa Mon Jun 15, 2020 5:29 am

Westbone wrote:I'd soak it for about half an hour.

I did soak the fretboard and clamped it for a good few days 'till dried out.

Would do no harm to soak it again.

Looks like a nice jig you've made, should do the job... Thumb Up
 Thanks mate - its in the jig. I removed the towel and made adjustment to get the twist out then put the towel back on. I will probably remove the towel tomorrow and let it start drying out. May take a few attempts to get it right
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Post by Barry Mon Jun 15, 2020 10:35 am

It probably took some time to get into that predicament in the first place, so rushing likely would not be too successful.

As you say it may require more than one attempt.
I'll need to remember that as I attempt to reset my Ovation's neck. Neutral

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Post by challpa Tue Jul 07, 2020 1:17 am

After a couple of weeks in the jig the twist is down to less than 1mm. Soaked it again and back in the jig for another adjustment. Also need to correct a bit of a forward bow. Ive purchased a double acting truss rod but its a bit longer than the original - is it OK to rout right up to near the nut ? I have about 16.5 mm of neck depth and need to rout in
8mm deep for the truss rod. Any thoughts ????
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Post by Westbone Tue Jul 07, 2020 8:36 am

Think that is a bit long.

An inch shorter would be better. A little close the the beveled end of the fingerboard.
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Post by challpa Tue Jul 07, 2020 7:15 pm

Westbone wrote:Think that is a bit long.

An inch shorter would be better. A little close the the beveled end of the fingerboard.

Yeah I did think the same - maybe modify this one or try to get another 
This one is 18" - next one down in length at stewmac is 14 1/4 " which would be too short
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Post by Westbone Wed Jul 08, 2020 1:51 am

There's 100's on ebay.
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Post by challpa Wed Jul 08, 2020 1:58 am

Cheers mate I will check it out
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Post by challpa Wed Jul 08, 2020 2:10 am

OK I have ordered one that is 16.5" so 1 1/2" shorter, should be good. Dont know why I didnt think of ebay lol. Thanks Damian
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Post by challpa Tue Sep 01, 2020 10:55 pm

OK a little progress

From straightening jig to routing jig

Need to beef up the router sled supports a bit then the moment of truth


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Post by RevDoc Thu Jun 10, 2021 9:31 am

How did it turn out in the end? Did you permanently straighten the neck?

This thread gives me great hope I can make a similar repair on my Spectrum LX. It had a small issue when I bought it and discovering rust on the neck bolt threads made me realize the guitar had had some substantial moisture exposure at some point in it's past. Tightening the truss to compensate made it more playable, but now I'm getting some separation of the fretboard at the nut and I think that removal and straightening may be the best solution.
So I'm curious as to how this project turned out in the end and am wondering if anyone has further advice on the application of moisture to the process. How much is enough? How much is too much?
Thanks for such an informative post, the photos have inspired several ideas about how I'll pursue fixing this problem.
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