A Martin in for a loose endpin jack that needed the internal nut adjusted to properly allow the external nut to be tightened. The internal nut on the jack is the key to getting a nice tight fit in the tail block and still allow the instrument cable to properly seat in the jack. If the internal nut is too close to the outside of the jack, the external nut will not allow your cable's plug to get "all up in there."
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custom x series
2014 Martin Custom X Series D [4.7 lbs] :: hardwood floor free fall
This high pressure laminate (HPL) back and sides Martin took a fall onto a hardwood floor. The treble side broke free from the back through the linings from the neck block to the tail block. The first back brace was split and needed to be reglued as well. See the glue up details here.
2014 Martin Custom X Series D :: high pressure laminate explosion
This X series Martin Dreadnought has high pressure laminate (HPL, Formica, etc) back and sides. The guitar slipped off of a strap and fell onto a hardwood floor. The back broke loose from the treble side (neck-to-tail block) through the linings. The first back brace was also split on the bass side. Here everything is being glued back together with a combination of spool clamps, cam clamps, scissor jack and brace jack. Luckily this was not solid mahogany, else the damage would have been much worse.