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Old 01-20-2021, 08:25 AM
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Victory Pete Victory Pete is offline
Victory Guitar Shop
Join Date: Feb 2011
Posts: 710

Originally Posted by JonWint View Post
"Stiffness" is only determined by the structural member dimensions and its Young's modulus (E).

Keeping a truss rod "very tight" will change the relief. The stress in the truss rod will not affect stiffness.

You can build a prestressed top system but it will not increase stiffness.
I disagree. If you tighten trussrod as much as possible counteracting the pull from the strings, the neck will be stiffer just as a neck with no strings and a loose trussrod will be less stiff.
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