Posted on May 4, 2020March 6, 2024 by Dale Phillips Free Plate Tuning, Part Two: Violins Free Plate Tuning, Part Two: Violins by Alan Carruth Originally published in American Lutherie #29, 1992 and Big Red Book of American Lutherie Volume Three, 2004 See also, Free Plate Tuning, Part One: Theory by Alan Carruth Free Plate Tuning, Part Three: Guitars by Alan Carruth Before I get into plate tuning proper I’d like to digress a bit and discuss the rationale behind the process, and a couple of other things I find it useful to keep in mind while I’m working. And I can’t think of a better way to begin than by telling you about one of my more elaborate experiments. Fig. 15 gives the relevant information on my fourth and fifth violins. The idea was to check out the influence of asymmetric back graduations by building a pair of closely-matched fiddles with that as the only variable. The one-piece backs were cut from the same plank of bird’s-eye maple and the tops were cut from a red spruce 4×6 that I took out of the wall of my house when I put in a new chimney. The molds were routed using a template. Archings were checked for height at over two dozen points on each plate and were held to .2MM. Graduation, weight, and frequency data is as shown. The delta f mentioned is the frequency drop obtained when a 5G weight was stuck to the plate in an active area of the given mode. Fittings and so on were matched as closely as possible, and the two bridges were cut back to back from the same piece of maple. Become A Member to Continue Reading This Article This article is part of our premium web content offered to Guild members. To view this and other web articles, join the Guild of American Luthiers. Members also receive 4 annual issues of American Lutherie and get discounts on products. For details, visit the membership page. If you are already a member, login for access or contact us to setup your account.
Posted on March 2, 2020March 7, 2024 by Dale Phillips Free Plate Tuning, Part Three: Guitars Free Plate Tuning, Part Three: Guitars by Alan Carruth Originally published in American Lutherie #30, 1992 and Big Red Book of American Lutherie Volume Three, 2004 See also, Free Plate Tuning, Part One: Theory by Alan Carruth Free Plate Tuning, Part Two: Violins by Alan Carruth The guitar is somewhat simpler acoustically than the violin, and perhaps more limited. As a result it has evolved into a number of more or less specialized forms to suit different musical uses. It is difficult to imagine a guitar that could “do it all” the way a good violin can. Rather, each guitar seems to have a “center,” a sound that is characteristic of it that suits it for a particular style or player. Good guitars do have a wide dynamic and timbral range, but they always retain their characteristic sound. As I see it, a good part of the art in this game is deciding where you want the “center” to be, or, alternatively, how to get the “center” you want out of a given shape or set of wood. And then you want to have a broad dynamic and expressive range, good balance, and clarity or resolution; the ability to distinguish things like inner lines. No amount of acoustic science is going to tell you what priority to put on the different characteristics of the sound, nor whether you have succeeded in the end. But if you know what you’re doing, an oscillator and a jar of glitter can help you get the sound you want. One of the main simplifying factors between the guitar and the violin is the lack of a soundpost in the guitar. This allows the top and the back to be more independent; in acoustic terms they are not so tightly coupled and can act out of phase. Become A Member to Continue Reading This Article This article is part of our premium web content offered to Guild members. To view this and other web articles, join the Guild of American Luthiers. Members also receive 4 annual issues of American Lutherie and get discounts on products. For details, visit the membership page. If you are already a member, login for access or contact us to setup your account.
Posted on December 11, 2019March 7, 2024 by Dale Phillips Meet the Maker: Carleen Hutchins Meet the Maker: Carleen Hutchins by Alan Carruth previously published in American Lutherie #86, 2006 See also, The New Violin Family by Alan Carruth The Catgut Acoustical Society and the New Violin Family Association by Robert J. Spear I first met Carleen Hutchins at the 1979 GAL Convention in Boston. I’d heard a lot about her from my teacher and friend Tom Knatt, who had been working with her for years, but she exceeded all of my expectations. The following winter I began joining Tom for the monthly drive down to Montclair, New Jersey for what Carleen called “technical violin making” sessions. It’s hard to overestimate Carleen’s impact on the lutherie community. As one of the first women to gain a reputation as an instrument maker, she’s been an inspiration to a number of others who have been important in their own right. In helping to establish the Catgut Acoustical Society, she was one of the first people to initiate the sort of information sharing that the GAL carries on; a system that has contributed much to this “Golden Age” of lutherie. As a scientist, she was one of the pioneers in the study of musical instrument acoustics, and in editing the CAS Journal, she brought together, coordinated, and inspired the work of many others. There always seems to be more to find out about Carleen, so when Tim suggested that I do an interview, I accepted the assignment gladly. Thus it was that I drove over to her new home in Wolfeboro, New Hampshire, in a snow storm, and sat down for an interesting chat. Become A Member to Continue Reading This Article This article is part of our premium web content offered to Guild members. To view this and other web articles, join the Guild of American Luthiers. Members also receive 4 annual issues of American Lutherie and get discounts on products. For details, visit the membership page. If you are already a member, login for access or contact us to setup your account.
Posted on June 20, 2019March 7, 2024 by Dale Phillips The New Violin Family The New Violin Family by Alan Carruth previously published in American Lutherie #86, 2006 See also, Meet the Maker: Carleen Hutchins by Alan Carruth The Catgut Acoustical Society and the New Violin Family Association by Robert J. Spear These diagrams are intended to show the relative sizes of the octet instruments; dimensions shown are not definitive. Detailed full-scale plans are available from the New Violin Family Association. The neck of the small bass as shown here is longer than might be expected. This is to ease the transition between a standard bass viol and the octet small bass. Small basses have also been built successfully with necks that are more in scale with the instrument body. The largest five instruments are played on endpins. Become A Member to Continue Reading This Article This article is part of our premium web content offered to Guild members. To view this and other web articles, join the Guild of American Luthiers. Members also receive 4 annual issues of American Lutherie and get discounts on products. For details, visit the membership page. If you are already a member, login for access or contact us to setup your account.
Posted on January 16, 2010February 7, 2024 by Dale Phillips In Memoriam: Don Bradley In Memoriam: Don Bradley 1949 – 2016 by Deb Olsen, Chris Herrod, Alan Carruth, and Fred Carlson Originally published in American Lutherie #127, 2016 We are fond of all our GAL members, for sure. But there are some members who have been with us for so many years, who have grown up with us and the Guild, and who we have enjoyed spending time with at so many conventions over decades, that they have a special place in our hearts. Don Bradley is one of those. Happy, amiable, kind, funny, smart, and humble, Don has always been a great supporter of the Guild and its ideals. He has been with us from way, way back — a member continuously since 1977, he attended his first convention in Tacoma that year after completing one of the early courses at the Roberto-Venn School, and he attended at least a dozen in all, including the last five held in Tacoma from 2004–2014. (See his “Meet the Maker” article in AL#111.) I’d have to do a little research, but it’s possible that he attended more conventions than any other member (other than the GAL staff). So we were always delighted when we’d get his convention registration and knew we’d be seeing him again. Conventions can be daunting, but one of the things that encourages us to keep doing them is knowing that we’ll be seeing some of our old pals like Don. We’ll really miss him at the next one. —Deb Olsen Intelligent, soft-spoken, and kind, Don Bradley was for many years a welcome fixture at NCAL (Northern California Association of Luthiers) and GAL events. We grew accustomed to his friendly, easy-going presence and that makes his sudden passing all the more difficult. Aside from building a variety of instruments, Don applied his keen, inquisitive mind to a wide range of pursuits: banjo playing, electric cars, folk dancing, raising llamas, and gardening. Perhaps he will be best remembered for building the signal generator device for Chladni testing (“free plate testing”) that was sold for many years by LMI and others. Thank you, Don. You will be missed. —Chris Herrod Photo by Teri Korsmo I first met Don at the GAL Convention in Vermillion, South Dakota, in 1992. He approached me, introduced himself as an electronics engineer, and asked if there was anything he could do to help. I was looking for somebody to take over the business of making signal generators that I had suspended on the death of my father a few years before, and his offer was very welcome. I sent the parts and information to Don with gratitude. Those machines were only slight updates of the ones detailed in the old GAL Data Sheet #112 by Matt Fichtenbaum, and were very far out of date by then; so Don came up with a wholly new, and far better, design in consultation with me. Although from habit I use my old unit for day-to-day work, when I need real precision or portability I turn to Don’s device. Thereafter we would see each other in Tacoma when I was able to get out for conventions. When I had a table we would set up a signal generator, and Don would spell me in demonstrations. He would also help out if I had a talk to give. Don hosted me at his home when I went out for what turned out to be the last Healdsburg Festival, providing a pleasant and undemanding oasis amid the cacophony. My flight home was late on the Monday after the close of the festival, and Don took me on a sightseeing tour. We took in the Armstrong redwoods and Bodega Bay in a pleasant and relaxing day’s drive. I always hoped that some chance would enable me to return the favor, and show him some of the scenic attractions near my home in New Hampshire. Sadly, that will never happen now. I’m left wondering how his instrument making went, and whether he ever got that Tesla that he wanted. Adios, Don: I owe you. —Alan Carruth Don Bradley was such a nice guy! I met him at the first GAL Convention I ever attended, the one in Winfield, Kansas, in 1978. I was oh-so-young (early 20-something), on my first real trip away from home on my own, at my first luthier convention, showing off some of my instruments to other luthiers for the first time. Don was so warm and easy going; I immediately felt comfortable with him. We got caught together in some building when a brief and wild summer tornado cruised through, filling the streets with water in minutes. Watching this amazing phenomenon of nature, we got to talking, and it turned out he had just locked his keys inside his truck. I spent quite a while taking apart my backpack to get at a metal rod that was a part of the frame, and we used it to pick his truck-door lock. The sort of experience that one remembers, and that can lead to lasting friendship, which it did. We mostly only met, over the years, at lutherie-related events, and saw each other less frequently as the years went by, but each meeting was a happy event, and the friendship was always there, waiting to be enjoyed. Wherever luthiers go when they pass on, I know everyone there will be happy to see him, but we’ll sure miss him here! Happy journey into the mystery, my friend! —Fred Carlson
