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Mechanical Compliance for Soundboard Optimization

Mechanical Compliance for Soundboard Optimization

by David Hurd

from his 2006 GAL Convention workshop

Originally published in American Lutherie #90, 2007



People say, “You’ve got to make fifty or a hundred guitars before you get it right.” That makes me crazy. I feel that if you can do the carpentry of putting an instrument together and have idea of what it should look like, you can get 80% or 90% of the way there in terms of top optimization with a mechanical compliance approach.

I build many sizes of guitars and ukuleles using different top woods. I have developed an easy method of testing the compliance of a top, that is, how far it flexes under a given force, with a simple fixture. Being able to measure and compare the compliance values has proved to be a very useful thing in optimizing these soundboards for the best sound and stability when I graduate the edges of the tops and carve the braces.

After building and measuring many instruments, I have developed a mathematical model that does a very good job of estimating what the target compliance measurements should be for a given instrument size and string tension. I have integrated the model into a spreadsheet which you can use by plugging in just a few simple measurements.

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Ukuleles Are For Real!

Ukulele Are For Real!

by Bob Gleason

Originally published in American Lutherie #1, 1985



Two years ago, when I moved to Hawaii, I told my cabinet maker shop partner that I’d never build a ukulele. I just did not consider them real instruments. I mean, when they were regularly on sale from the wholesaler at $10 to $15 each, how could I think of them as anything but toys? Well, two years down the road they earn me at least 50% of my income and sell for $275 to $500. In Hawaii they are a very real instrument.

The ukulele is commonly thought of as being Hawaiian in ethnic origin. Not so; it is of Portuguese descent. It has evolved from a small guitar called a Braguinha brought to Hawaii by the Portuguese around 1879. In Hawaiian the name ukulele means jumping flea. This refers to the rapid movement of the fingers while playing.

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Letter: Ray Cowell Ukes

Letter: Ray Cowell Ukes

by Thomas Johnson

Originally published in American Lutherie #99, 2009



Dear Tim:

A ukulele revival is underway in the U.K. Of special interest here is Ray Cowell, who has crafted a pair of ukes from the Titanic’s sister ship, the RMS Olympic. Captain Edward Smith was the Olympic’s first skipper, and he went on to his last command aboard the Titanic. The Olympic was dismantled in 1937, and local industries purchased salvaged timbers and fittings for further use.

Ray worked as an engineer in coal mines in the early ‘60s under appalling conditions. He shifted to the paint manufacturing industry, where he developed specialized machinery; when his job evaporated, he bought and developed his own successful factory that serviced the paint industry. One of the factory’s existing buildings was fitted with materials salvaged from the Olympic: paneling, lighting, floor tile, decking, and even the main staircase.

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Roy Smeck: Wizard of the Strings

Roy Smeck: Wizard of the Strings

by James Garber

previously published in American Lutherie #11, 1987 and Big Red Book of American Lutherie Volume One, 2000



Roy Smeck is one of the treasures of American popular music. For nearly seventy years now he has entertained millions with his virtuosity on fretted instruments and his warm sense of humor. He has also been mentor, teacher, and friend to dozens of fretted instrument enthusiasts, and has been the inspiration for countless others through his numerous instruction books.

Roy was born on February 6, 1900 in Reading, Pennsylvania. His musical development closely parallels that of the dawning 20th-century American popular culture. The birth and adolescence of the recording industry, radio, film, television, and the golden era of American instrument making all occurred during his rise to stardom. In the vaudeville circuit he made his name solely as an instrumentalist. He also achieved prominence as a recording artist under his own name and as a backup studio musician for a number of other well-known stars in the early days of recording.

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Review: The Ukulele by Denis Gilbert & Ukulele Design & Construction by D. Henry Wickham

Review: The Ukulele by Denis Gilbert & Ukulele Design & Construction by D. Henry Wickham

Reviewed by John Calkin

Previously published in American Lutherie #86, 2006



The Ukulele
Denis Gilbert
Windward Publishing and Press, 2003
ISBN 0-9728795-0-1
available from Stewart-MacDonald, $24.99

Ukulele Design & Construction
D. Henry Wickham
Trafford Publishing, 2004
ISBN 141203909-6

I hear that there’s a ukulele revolution going on out there. Maybe rebirth is a better term, I’m not sure. I live such an isolated life that major cultural changes pass me right by, but I hear in the wind that there’s a ukulele tsunami out there.

I hope it’s true. It’s not like Hawaiian music automatically melts the stress off my bones. Heck, I’m a guitar maker and as such I don’t suffer any stress, right? But as a guitar maker I’ve sort of settled into my mold. It’s life-as-usual the year round. I’m ready for some excitement, for the next Big Thing. If it’s going to be ukuleles, so be it.

That Gilbert and Wickham’s books came out within a year of each other suggests that something is happening. That their books are so much alike suggests that they know each other, or perhaps one taught the other. I don’t know and it doesn’t matter to me, but their books are enough alike that I decided to review them together.

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