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born2push 09-10-2021 07:38 PM

2013 Martin d 42 custom shop truss rod
I just got this guitar. It has lite strings 54 - 12s and has a little buzzing. To my astonishment there's a hole for a truss rod but can't see one installed. Anyone know if that's normal? Or is it way back in guitar neck?

Mbroady 09-10-2021 10:27 PM

Martin uses a 5 MM Allen wrench.
Here’s e a link to what you need. The truss rod sits at least an inch, if not more within the hole, hence why the wrench has a long reach

born2push 09-10-2021 10:27 PM

Thanks. I'll check it out

Mbroady 09-10-2021 10:33 PM


Originally Posted by born2push (Post 6806781)
Thanks. I'll check it out

Go slow, especially when tightening the truss rod (taking away relief)
Maybe a 1/4 turn at a time

But if your buzzing it might be back bowed which means to loosen it
But the buzz could come from other issues. Bringing it to a (great) tech would be the thing to do if you are not experienced with guitar set ups.

born2push 09-10-2021 11:16 PM

I was able to find a 5mm alan wrench . I just loosened it about 1/6 of a turn. The wrench was just barely long enough. Neck Now has a little relief. Thanks for your help. It was my first time seeing a truss rod that deep in the neck

Mbroady 09-11-2021 11:16 AM

Is the buzz gone?

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