My Guitar Notes

Bolt-on neck

A neck attached with screws through a metal plate into the body, rather than being glued in or run through as one piece.

The joint makes the neck replaceable, which is why a bolt-on instrument can be repaired or even reborn with a different neck, and why shimming to correct an angle is a ten-minute job. It typically uses a shallower neck angle and a larger, squarer heel, giving a slightly more percussive attack and a snappier low end than a glued joint. Common practice is four screws, sometimes with threaded inserts for a firmer, more repeatable fit.

Example: a shim cut from a business card under the heel of a bolt-on neck is enough to lift the strings and fix a bridge that has bottomed out.

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