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Curing and Grading Lutherie Lumber

Curing and Grading Lutherie Lumber

by Bruce Creps

previously published in American Lutherie #92, 2007

See also,
“Resawing Lutherie Wood” by Bruce Creps
“Sharpening the Stellite Teeth on the 3" Hitachi Blade” by Bruce Creps



At a GAL Convention several years back a well-known luthier and lecturer stated that the best way to be assured a supply of properly processed tonewood was to harvest and air dry it yourself. He posited that due to turnaround and financial considerations most tonewood suppliers rush their kiln schedule and compromise the quality of the wood. For me, the wisdom of his statements was in stressing the importance of proper drying.

I don’t know if the percentage of kiln-dried instrument-grade wood damaged or compromised due to improper drying is higher than the corresponding air-dried percentage. I do know that it is very easy to damage wood when air drying it. You don’t have to do anything. Neglect it and you can expect degrade: end checks, surface checks, warping, case-hardening, rot pockets, fungal stain and decay, and/or insect infestation.

Improperly kiln-dried wood can exhibit checking, warping, and case-hardening. However, with kiln drying the fungi and pests in the wood will be killed, and colors can be clearer. The obvious disadvantages of kiln drying are that you need space and funds for a kiln, and you use lots of energy (unless you have a solar kiln).

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Constructing the Middle Eastern Oud, Part Two

Constructing the Middle Eastern Oud with Peter Kyvelos, Part Two

by R.M. Mottola

previously published in American Lutherie #95, 2008

See Also,
“Constructing the Middle Eastern Oud with Peter Kyvelos, Part One” by R.M. Mottola



The Top

The top of the oud is “flat” and features ladder bracing and one to three sound holes with fretwork rosettes in them. However, the top is constructed to either passively encourage or actively shape the kind of bellied-in-front-of-the-bridge, humped-up-behind-the-bridge distortion common to all instruments with string anchors at the glued on bridge. More on this in a bit.

Peter uses German spruce for his tops and he generally joins and then thickness sands tops well in advance of building, inventorying the joined tops for years before actually using them (Photo 1). Finished top thickness will average around 2MM, depending on the stiffness of the wood, so tops are thickness sanded accordingly at this point.

The first steps in preparing the top are to cut it to shape and then mark and cut channels for the sound hole purfling (Photo 2). He uses a custom made fly cutter to cut the channels. His purfling scheme is pretty simple, and he generally uses black and white fiber violin purfling strips for this. The ends of the purfling strips are mitered and dry fitted before being glued. There is no fingerboard extension to hide the butt joint, so this work is a bit finicky (Photo 3). The purfling is glued into the channels and then scraped down once the glue dries. Then the sound holes are cut out.

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Three Holes are Better than One

Three Holes are Better than One

by Robert Ruck

previously published in American Lutherie #91, 2007



See also,
“There’s a Hole in the Bucket” by Cyndy Burton
“Sideways” by John Monteleone
“Herr Helmholtz’ Tube” by Mike Doolin

Classical guitar maker Robert Ruck pioneered sideports for nylon string gutiars. He describes how the idea materialized out of several experiences going back to the begining of his career in the ’60s. A strong advocate, he now offers ports as an option on all of his guitars.

Since late 1999, I have regularly used sideports in my guitars. My experience with the resulting 150 or so ported classical and flamenco guitars with various designs is consistent, predictable, and all positive. There is an increase in loudness both for the player and for listeners. In listening tests with several fine players, we have concluded that the guitar is louder for the audience, too. The fundamental tone quality of the guitar stays the same, but it is louder, has stronger trebles, and has a more balanced quality for the player, opening up an area of sound around the player that is not normally heard. Since we as players sit somewhat asymmetrically to the guitar and the conventional soundhole is positioned to our right, there is an area on the left side of our heads that does not receive as much sound as the right side. We grow up hearing the guitar this way, so we never question it. Players comment that it’s as if one is hearing the guitar in stereo for the first time.

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Sideways

Sideways

by John Monteleone

previously published in American Lutherie #91, 2007

See also,
“There’s a Hole in the Bucket” by Cyndy Burton
“Herr Helmholtz’ Tube” by Mike Doolin
“Three Holes are Better than One” by Robert Ruck



Archtop builder John Monteleone is famous for his avant-garde approach to these instruments. He explains how sideports came into his mix.

The concept of incorporating the use of alternative soundholes in the side of my guitars came to me at an early age when I had built my first acoustic guitar, back around 1963. I would place my ear on the side of the guitar and wonder how I could make the guitar sound just like that. I figured that the only thing preventing me was the side of the guitar itself.

Even then I knew that you couldn’t just cut out a hole into the side of the instrument without inviting structural failure. There had to be some kind of reinforcement to permit it to happen. How could I make this happen on my guitar?

Some years went by before I actually got to revisit this idea and to address the best and most precise method of execution. While still in my old workshop in the 1980s I had done several drawings for this system of side soundhole placement but never got to build it. Then in 1995 Scott Chinery put the challenge to me to come up with a way to hear the projection of the guitar in a better and more effective way for my contribution to his Blue Guitar Collection. Scott, unbeknownst to me and the other blue guitar makers, had also challenged a couple of the other luthiers during this time by planting this seed with them as well. It seemed to me the perfect invitation, if not an excuse, to explore this avenue of tonal possibility.

Experimentation of design is historically not novel to the idea of trying to make improvements to nearly all musical instruments. A visit to the US Patent and Trademark Office will provide a staggering volume of inventions for fretted instruments alone. Many ideas never made it to fruition. But it is wonderful to see the many recognizable ones that did.

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Three Craftsmen

Three Craftsmen

by H.E. Huttig

previously published in Guild of American Luthiers Quarterly 10 #3, 1982

See also,
“The Guitar & I” by H.E. Huttig
“Woes of a Wood Merchant” by H.E. Huttig



Just returned from a trip from Miami to Williamsburg, and return with visits to three fine craftsmen. First we visited Allen Chester in Jacksonville. Allen says he was inspired by an early article of mine to start building classic and flamenco guitars. The demand for electrics was much greater, so he changed over and now specializes in them. He is a builder and repairman for quite a few professional groups and is highly esteemed for his work on their instruments. He had tee shirts made up with his logo, and one of the groups wore them when their picture was taken for an album cover. Allen says that he has the luck to be in the right place at the right time. What he doesn’t say is that he has the talent to take advantage of opportunities and the abilities to back up his participation.

Allen is multi-talented and experienced in all sorts of mechanical and machine work. He belongs to a sail plane club; not only flied but also builds the sophisticated and super light glider aircraft. He made a rosewood belt buckle with a mother of pearl inlay in the design of a sail plane. It was a gift for a friend, but now he has orders for the belt buckles. He lives in a comfortable house on which he has put additions and restorations. At least half of the building houses his well-stocked workshop.

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