On my guitars which have a truss rod, with the action tweaked to my satisfaction, I straighten the neck (tighten the truss rod) until I get string rattle when playing, then back off until the rattling stops.
Once the relief is set, there will be some seasonal tweaking but it's in tiny amounts - an eighth turn at a time.
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2009 CA Cargo Raw, 2006 Collings OM-1 SS light build, 2004 Taylor 714ce, 2000 Taylor 310K, 1991 Martin HD-28, 1971 Martin 0-18, 1967 Guild F-30
2006 Ovation Legend 6756LX 12 string, 2004 Taylor 354ce 12 string, 1976 Guild G312-NT 12 string (dreadnaught shape)
1966 Martin T-15 tiple, Mele koa ukulele
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