Vintage Guitar - July 2016 - Open - 64
Column Dan's Guitar RX
9) To adjust the neck, I did what I always
do, especially with basses - I helped the
neck to adjust by clamping it into a back
bow, then tightening the adjusting nut(s).
To my dismay, the JB weld crushed under
the load. Strike two!
I then figured that the adjusting nut or
the rod might be rusted/frozen to the wood
of the neck, or to each other. Using a small,
uncut pipette filled with a small amount
of Liquid Wrench Penetrating Oil, I oiled
around the nut so the oil seeped behind/
between it and the wood of the neck. I let it
sit for an hour or so.
10) While the oil penetrated, I drilled out
the remains of the J-B Weld with a long drill
bit of the correct size to be tapped by a 1/420 tap. By threading the interior of the nut,
I hoped to be able to insert a 1/4-20 Allen
set screw with a 1/ 8" socket drive.
11) It was awkward tapping the inner walls
of the adjusting nut because it was about 1"
down in the truss-rod cavity; but, using a
small hammer on the end of the tap after
each turn, I was able to create an interior
thread in the mauled nut.
12) The threads cut well enough to accept
the set screw.
13) After carefully cleaning the set
screw threads with alcohol, I applied
industrial thread-locking cement to them
and threaded the set-screw into the freshly
tapped hole in the adjusting nut - the two
parts bonded well.
14) I was thrilled with the outcome - a
fresh Allen socket, adjustable with a 1/ 8" Allen wrench. And, thanks to the fix (and by
"helping the rod adjust"), the neck adjusted
very nicely. I was glad I didn't give up, because
ultimately, I hit it out of the park!
Dan Erlewine has been repairing guitars for more
than 40 years. He is the author of three books, dozens
of magazine articles, and has produced instructional
videotapes and DVDs on guitar repair. Since 1986,
Erlewine has lived and worked in Athens, Ohio, as part
of the R&D team for Stewart-MacDonald's Guitar Shop
Supply. You can contact Dan at firstname.lastname@example.org.
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