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16th November 2013, 10:15 PM #1
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A neck/ CA glue/ Truss rod question
I have a '76 Musicman Stingray that has developed a fine crack down the treble side of the "skunk stripe" truss rod cover fillet, on the back of the neck.
Goes from around the 2nd fret to the 12th at least.
the bass side edge of the crack is higher than the treble edge, so some movement is happening, but it doesnt seem to move under hand pressure ,
I saw a lutjier in Sydney about it, and his response was literally "cant be fixed".
Which was odd because i owned a previous '76 Stingray for near 20 years thad had the exact same problem , but on both sides, and it actually moved a little under had pressure.
I explained that I had had the same fault repaired completely successfully about 15 years ago,
but he wasnt interested, which was weird
So I have now tracked down the guy that repaired the same issue on my previous Stingray
and he has said to clamp the neck and use very thin super glue.
I'm thinking of taking the neck off and putting it face down on to a 6" radius sanding block.
now i'm trying to think of the best way to get decent clamp pressure on either side of the crack, and have all other movement eliminated,
and i'' need to be able to have access to the crack under camping so i can
apply the glue down the length of the crack ,
The CA glue potentially running into the rod cavity and causing a bigger problem worries me.
If anyone has any advice on ideas for jigging this properly, or on the CA concerens, and if anyone has had any experience with this repair , i'd appreciate any thoughts you might have .
thanks
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17th November 2013, 03:13 PM #2
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Well I'd take the relief off the truss rod itself and then see if you can clamp the neck back together. From the sound of it the truss rod may be the cause of the crack.
"We must never become callous. When we experience the conflicts ever more deeply we are living in truth. The quiet conscience is an invention of the devil." - Albert Schweizer
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18th November 2013, 01:58 PM #3
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The truss rod in these is single acting so will just be pushing the centre of the neck up not really having any effect on the filler strip.
I would imagine the repair guy was dismissive because 40 years of contamination of finishing oils(oil finish to the neck?) and sweat etc would make it impossible to guarantee adhesion of any glue in the crack.
Even if you dug out the filler strip completely and replaced it with a snug one, there may be too much contamination.
I'd probably use regular CA not superthin to minimize too much flowing in, depending on the crack thickness.
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21st November 2013, 09:58 PM #4
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22nd November 2013, 09:30 AM #5
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Originally Posted by simso
Thanks Steve,
the neck on this bass was refretted and refinished about 9 years ago . . this was after i purchased it . . the original natural finish was highly crazed and cracked, with a few bald patches, including the entire back of the neck, which someone had scraped or sanded the cracked laquer away.
So the neck was completely refinished (except headstock). And all was good for years . .
And this crack is more something you can feel, rather than see . .
its very very tight, and seems to have little accumulated dirt etc.
But it may well be a problem,
so would you have any tips/ procedures you could share on getting a very tight crack like this clean enough for glueing?
(had to stop myself from writing "tips you could share on cleaning a very tight crack" . . .eww)
Also, would you go with thin super glue?
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22nd November 2013, 10:35 AM #6
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Without seeing it, it is a hard one, personally... site unseen, my approach would be to scrape the finish of the back and scrape the truss rod insert flush with its enviroment, after doing this, I would apply a twisting load to the headstock to attempt to seperate along the insert, then yes good old superglue. Originally Posted by Slapfest
Dont worry about clamping and so forth just release the headstock, once dry rescrape, and then apply a finish over the raw wood
All of course sight unseen.
Steve
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