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Many luthiers attempt to reconstruct the Stradivari arch, but with its constructive principles remaining unknown, they are limited to mere imitation. This report presents a method to systematically reconstruct the Stradivari arch using trochoid curves. Furthermore, this study presents a method to generate a Stradivari arch of any specified width and height for practical application in instrument making.

A description of the geometric design method of the neck that can be generally used for violin, viola, and cello.

This is a method of using a laser when working on the arch of a violin.

To see changing color when wood is exposed to UV light. Experiment up to 600 hours in 100-hour increments to find the most suitable time.

Some bugs have been fixed.