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Old 12-06-2020, 04:43 PM
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mhw48 mhw48 is offline
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Join Date: Mar 2018
Location: NYC
Posts: 292

Originally Posted by iim7V7IM7 View Post
Mark graduated the Italian Spruce top today. The process starts on his ‘graduation board’. Layers of tape build up areas on the board where he wants the top to be thinner.

He places the top face down on the graduation board, and runs it through his sander.

After each pass through the sander, Mark checks the Chladni modes. The process is repeated until he gets numbers that he likes.
It's always interesting to see the eminently practical solutions that luthiers come up with for something that conceptually seems complicated: Layers of tape that raise the edges of the wood slightly so that in sanding it "flat", the top is actually tapered in profile.

Last edited by mhw48; 12-06-2020 at 09:07 PM.
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