Cracks In The Wood; Finish Checking - Guild Acoustic guitar Owner's Manual & Warranty

Cracks in the Wood

Cracks in the wood are typically caused by changes
in temperature and humidity. While a crack may
initially be alarming, it shouldn't be a cause for undue
concern if it is taken care of promptly. Cracks may
be repaired easily without compromising structural or
tonal integrity.
If the crack is in the top near the bridge, loosen all
the strings to reduce tension (which could potentially
exacerbate the problem), and have the crack repaired
as soon as possible. Please note: Cracks in the wood,
which occur as the result of exposure to temperature
or humidity changes, will not be covered under the
Guild warranty.

Finish Checking

Finish checking (very small splits in the finish),
usually occurs in winter and is typically the result of
suddenly exposing a cold instrument to the shock of
warmer temperatures.
All of the materials that make up a guitar expand
and contract with changes in temperature and
humidity. Wood expands as it warms, and does so
faster than its finish. When this happens, the finish
may split and fracture in little lines over the wood.
Although it does not affect the tone of the
instrument, finish checking mars its appearance. By
avoiding sudden temperature and humidity changes,
you should not have any finish checking problems.
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