Posted on August 11, 2021May 16, 2025 by Dale Phillips Applications of the Silicone Heating Blanket in Violin Making Applications of the Silicone Heating Blanket in Violin Making by George Borun Originally published in American Lutherie #34, 1993 and Big Red Book of American Lutherie Volume Three, 2004 In American Lutherie #25, Mike Keller describes how he uses silicone heating blankets for bending guitar sides, and mentions an earlier article in Fine Woodworking. The potential of these devices for use in violin making became obvious to me, and with some experimentation and adaptation, I’ve developed specific applications for the violin maker. Silicone heater blankets, also called flexible heaters, are available from two sources, with a number of standard sizes in stock at each company: Watlow Electric of St. Louis, Missouri (www.watlow.com) and Benchmark Thermal of Grass Valley, California (www.benchmarkthermal.com). Watlow markets through distributors. They have a large selection of stock sizes up to 35" long. Benchmark has a smaller stock size selection, but their prices are considerably lower. They will make any size you wish, but that adds to the cost and delivery time. Stock maximum length is 20", but this is more than long enough for violins. In bending bass ribs, I use two 10" wide blankets for the longer pieces, and only one for the center bout. The best units are 4W/sq.", rather than the 2W models. This type will get up to 500°F in a couple of minutes. Product catalogs are available which list the various sizes. 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 23, 2021May 21, 2025 by Dale Phillips Drafting Instrument Plans Drafting Instrument Plans by Ted Davis from his 1984 GAL Convention lecture Originally published in American Lutherie #4, 1985 and Big Red Book of American Lutherie Volume One, 2000 I feel that for every 1% I put into the Guild, I get back about 120%. And I’m very high on the plan series. It’s an opportunity for repairmen and builders to preserve information about some instruments that would otherwise be lost. By making these plans available to more people, even if they don’t build them, they will see what they look like and what they are. Of course, you will also have the opportunity to build replicas of these fine old instruments. Many of them have historical value, and many of them have monetary value. I’m sure there are a lot of “neophyte” luthiers in the audience today that would like to contribute to the Guild’s publications but just don’t feel they have the experience. Well, here’s something you can do. I’m sure you know someone that has a fine old instrument that’s a collector’s item, or perhaps you have one yourself, or perhaps the repairman will have one come into his shop. Take a few hours, take the dimensions of it, sketch it, and you can draw it at your leisure. Drawing an instrument plan is not all that difficult, but it is time consuming. You’ll spend ten, twelve, maybe fifteen hours or more on your first one. 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 1, 2021May 21, 2025 by Dale Phillips Blackboard Eraser Polisher Blackboard Eraser Polisher by Michael Dresdner Originally published in Guild of American Luthiers Data Sheet #288, 1984 and Lutherie Woods and Steel String Guitars, 1998 I’ve been using a blackboard eraser to do final dressing on my frets. I take this nice soft eraser and a piece of 600 paper and go across the fretboard. It’s beautiful; it just follows the curve and gives you a nice even rounded top. This is for polishing, after you’ve shaped the frets with files. ◆
Posted on April 13, 2021May 14, 2025 by Dale Phillips Bow Hair Jig Bow Hair Jig by Thomas Snyder Originally published in American Lutherie #3, 1985 and Big Red Book of American Lutherie Volume One, 2000 As and apprentice luthier, I have come up with a better mousetrap for rehairing bows. The results with this method have been uniform hair tension, long-term retention, and reduction in rehairing time. The jig was fabricated from pine and oak. I used oak on all blocks. Item 4 makes a great carving back for ferrule wedges. I average ten bows a month and this method and jig has cut my time in half and increased the quality. On my sketch, items 2A, 2E, 2D, and 2F are the new additions to an old jig. I have made a few small changes. For the lack of a name, I will call this a “hair holder.” Item 2A swings aside to place hair over sponge rubber. The half of a 1/8" dowel holds the hair in place when the wing nuts are tightened. 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 April 12, 2021May 16, 2025 by Dale Phillips Free Plate Tuning, Part One: Theory Free Plate Tuning, Part One: Theory by Alan Carruth Originally published in American Lutherie #28, 1991 and Big Red Book of American Lutherie Volume 3, 2004 See also, Free Plate Tuning, Part Two: Violins by Alan Carruth Free Plate Tuning, Part Three: Guitars by Alan Carruth I started learning free plate tuning on violins and violas more than ten years ago from Carleen Hutchins. For those who have not had the pleasure of her acquaintance, Carleen is one of the founders of the Catgut Acoustical Society and its permanent secretary. She is an able scientist, a great teacher, a fine luthier, and a self-confessed mediocre violist. While working with physicist Frederick Saunders almost thirty years ago she helped rediscover and update the old Chladni method of visualizing the vibrations of plates. Her subsequent research, using Chladni patterns as a window into the differences between good and poor violins earned her a silver medal from the Acoustical Society of America. Violin makers have traditionally used some variant of “tap tone” tuning to guide them in working out the final graduations of the top and back plates. Although the technique seems simple and organic on the face of it, it is in fact very complex. It takes a long time, as well as a good ear and a lot of talent, to learn to tune plates by tap tone. Even those who are good at it don’t always succeed. Felix Savart, back in the 19th century, tried to adapt Chladni’s method to research on violin acoustics, but the technology wasn’t there. Now we have the means, and as we gain more understanding of how the instruments work, we also gain more control over the sound. And it doesn’t only work on violins. Fred Dickens, Graham Caldersmith, and Gila Eban have all done major work in applying the principles of violin acoustics to guitar construction. Of course, there are differences and it takes time and effort to sort them out, but physics is physics, or, as a friend of mine said, “it all comes down to F=mA in the end.” I have found these techniques to be useful, and sharing useful techniques is what the Guild is all about. 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.
