Quote:
Originally Posted by Todd Yates
Not John, but I don't think so. Martin switched to T-frets in 1934 and didn't introduce adjustable truss rods until 1985. IMO that was a result of two things - the then new Low Profile neck, and the 3/8" square tube which never held relief as well as the 1/2" steel T-bar.
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Interesting, thanks for the info. I recently watched a Martin factory tour video and they were installing 2-way truss rods in their necks... as well as more automation..