Savart Journal

science and technology of stringed musical instruments

A Note on a Geometric Method for the Guitar's Contour

Ricardo R. Boullosa


The following work presents a geometric method based on nine circles and straight lines to obtain the contour line of a classical guitar. The method is based on the five-center method used in architecture to obtain an arc of ellipse. The contour line of the guitar shape can be obtained with a rule and a compass.

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Article published Nov 17, 2013.
This article has been accessed 14413 times since publication.


The Savart Journal is published in collaboration with the Guild of American Luthiers.

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Ricardo R. Boullosa
Laboratorio de Acústica y Vibraciones, Centro de Ciencias Aplicadas y Desarrollo Tecnológico, Universidad Nacional Autónoma de México.

Ricardo R. Boullosa is a research scientist at the Laboratorio de Acústica y Vibraciones, CCADET, at the Universidad Nacional Autónoma de México. Earned his M.Sc. in Southampton University, U. K., and his Ph. D. at the Universidad Autónoma de Morelos, México. Founder of the acoustics laboratory at CCADET, has published papers on the acoustics of the guitar, thermal ultrasound sources, urban noise, vibration measurements, etc.