Any advice on installing a skunk stripe in back of neck to get rid of truss rod rattle?

toonskeez

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I actually posted this over on talkbass dot com, as this relates a bass I built, but I haven't gotten any reply over there in a day, so thought I'd post it here; it is a guitar after all. Here's what I posted over there:

I've had a problem with truss rod rattle on my first bass build. I've built four guitars before this, so I have some experience building guitars. This is the first build however, where truss rod rattle has been a real issue.
When I first strung her up and played, the truss rod rattle was absolutely terrible; like really loud, metallic vibration type stuff going on. What I did to try remedy that, was to drill in through each of the fret markers till the bit touched the truss rod; then I squirted silicon in through each of the holes as best I could. I don't know how much actually got in there, but after replacing the fret markers, the truss rod rattle seemed to have gone away... for about a year anyway.
It's come back a bit recently; not as bad, but it's there, especially if I played a couple of strings at a time. When it's plugged in, it's not a problem, but I just don't like it...
...So I routed down from the back, into the neck, as much as I could, in order to insert a hard maple skunk stripe.
I haven't made the stripe yet, just routed the channel, but as I've never done this, I just want to know is there anything I should consider when gluing and clamping the maple strip in place?
Like, should I really jam it in there, so it's pushing hard against the back of the truss rod? Currently the neck is pretty much as straight as I can get it, so the truss rod arcs up ever so slightly, by about a mm or 2 in the middle of the channel I routed.
In case you're wondering why I didn't route the channel further toward the body, it's cos I didn't have enough clearance to have the router travel over the back of the guitar.
Anyway, any advice appreciated.
Here's pics:
 

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old_picker

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When this neck was built the strip was not installed correctly or wood has shrunk.
You'll need to loosen off the truss rod until no tension remains.
Clamp in your new strip tight so the truss rod is bearing hard against the fingerboard. The rattle will disappear once the glue has gone off. I use epoxy. BTW squirting silicon in through the top of the necvk is only adding to the problems you are having with this neck. While you have it apart I'd suggest pulling the truss rod and cleaning out the silicon

Usually if rattle is present all you need to do is tension up the rod until it is bearing on the fingerboard. doesn't have to be supertight but so there there is no room for it to move.
 

Rhomco

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Nothing sticks to silicone! Time for another neck.
Good luck with your project,
Rob
 

toonskeez

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I fixed the problem by flooding the routed out channel with Titebond 1 (after making sure the truss rod was loose with no tension). I then inserted a maple skunk stripe and clamped it snug against the truss rod (and cleaned away glue squeeze out) and let it sit for about a week to make the glue had cured fully. I then planed and sanded away the protruding part of the maple skunk stripe and applied a few coats of epoxy, then oil. Seems to play nicely now, with no rattle anywhere. Turning the truss rod was a bit stiff and I could hear it cracking away from the dried titebond, but it's working fine.
 

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