Luthiery Laboratories

This is a Martin-style single-acting truss rod. I built it years ago and never used it, and at this point, I never will. I am breaking it up for parts, so I thought I'd post a picture first. It consists of a 10-32 threaded rod in an aluminum channel. At the fixed end, at the lower left, the rod is set in a T-nut and the end is peened (hammered) over to keep it from rotating. The adjusting end is nothing more than a washer between the nut and the channel. Both ends are secured by bending the channel over them, then the center of the channel is cut down and everything is ground to minimal dimensions. You can find detailed directions online.

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