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Guitar Repair
Action
Aside
from changing strings, the procedure I do most is action set-ups.
My best practice is to have the customer demonstrate
or describe his or her playing style and I match the action with
the needs of the player's technique. This will be different
from player to player, given their own strength of attack, and
style of music. Bluegrass pickers like medium gauge strings
and often pick hard enough, note for note, flat out fast, to
rattle the soundest acoustic dreadnought. They demand high action
and a lot of relief in the neck.
Intonation
The INTONATION has to be
set accordingly. Setting the intonation involves matching a note
fretted at the 12th fret with the 12th
fret harmonic. If the fretted note is higher than the harmonic,
compensate by moving the saddle
for that string away from the nut. If lower, move the saddle closer.
I use an Arion Chromatic Tuner for the job. I've
been using it in the shop and on the road for over 10 years. High
medium gauge strings don‚t bend easily, and the act
of depressing the string raises the pitch of the note. Everybody
likes the sound of a guitar with big strings, but bigger is only
better if it‚s In tune.The incredible quality of even the
most inexpensive Pacific Rim guitars allows real precision when
it comes to setting up for optimum
playability. Very few of these low-end knock-offs come set up.
That's OK, because a post-sale visit to your guitar tech
for a set-up and a set of decent strings will be well worth the
cost.
Relief
Setting the RELIEF is easy on most guitars. First, sight
down the neck from the tuning head toward the bridge. There should
be a
slight relief, or concavity in the fret board. If the fingerboard
is flat or has too much relief, it can usually be corrected by
turning the Allen socket with the wrench provided. Warning: never
adjust the truss rod without first loosening the strings to slack.
Failure to follow manufacturer's guidelines may void your warranty.
Go carefully here. Clockwise will draw the head back and increase
tension on
the strings--counter clockwise will relieve the neck. A quarter
of a turn at first, followed by a few minutes to allow the neck
to change fully. Retune, visually check it again, and proceed judiciously.
Broken Necks
BROKEN
NECKS are surprisingly common. For decades companies have been
producing guitars with a neck adjustment rod accessed through a
pocket gouged into the headstock, cleverly hidden under a plastic
plate. The recess leaves just a thin wafer of wood at the juncture
of the head and neck, the point of maximum stress. Like all rotten
ideas, this engineering was copied by a lot of other
manufacturers. Between the tensile strain of the strings and the
bad choice of grainy one-piece necks, all one needs is a little
tic against a mic stand, and you can decapitate your pride and
joy.
The good news is they are surprisingly easy to fix. If the break
is clean, the prognosis for an inexpensive, lasting fix is good.
If you can find any stray pieces, take them to your guitar repairman.
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Click here to view before and after shots of a repair I did on a Gibson
12 string.

The
only licensed Martin repair
facility in Northern Minnesota. Mark Hendrickson specializes in
acoustic guitar repairs.
Contact me for any question regarding guitars
or guitar repair.
Email: music@gvtel.com
Phone: 218-694-3752
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