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Koa Tenor Ukulele

Tonewoods

  • Curly Koa back, sides and top

  • Curly Koa binding

  • Mahogany three piece neck

  • Abalone rosette

  • Ebony fretboard

  • Headstock with Curly Koa headplate

  • Rosewood bridge

  • Bone nut and saddle

  • Gotoh geared tuners

  • Royal-Lac shellac based finish

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Voicing and Construction

I planned to build a classical guitar with open harmonic bracing based on plans from Guild of American Luthiers. This ukulele was a practice run of the bracing pattern. The cross brace openings have a 0.5mm strip of Spruce against the top. The width of the five fan braces varies from 3.5 to 5mm.

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Top thickness 1.6mm to 1.5mm perimeter. Back thickness 1.9 mm.

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Resonances:

Top monopole 365 Hz

Top cross dipole 480 Hz

Back 403 Hz

Air 196 Hz

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