Posted on January 11, 2010May 27, 2025 by Dale Phillips Review: Acoustics of Wood by Voichita Buchur Review: Acoustics of Wood by Voichita Buchur reviewed by Nicholas Von Robison Originally published in American Lutherie #57, 1999 and Big Red Book of American Lutherie Volume Five, 2008 Acoustics of Wood Voichita Buchur CRC Press, 1995 ISBN 0849348013 Voichita Buchur’s book Acoustics of Wood is a synthesis of over fifty years of work by the scientific community into the physics of how this complex material responds to vibrational wave stimuli. With almost 800 references into the literature and about ten years from inception to its being published in 1995, it is a tremendous resource for the luthier’s understanding of his/her main material. I don’t get the feel from the text that the author is a maker herself, even though she is a member of the Catgut Acoustical Society. The book is heavily weighted towards violin family instruments, but this doesn’t make the book any less valuable to guitar makers. After a short, well written, general discussion on the anatomical structure of wood (macro, micro, and molecular), a brief outline is presented dividing the book into three major sections. Part One explores the physical phenomena associated with the effects of acoustic waves in forests (windbreaks to attenuate noise) and architectural acoustics (concert halls, office buildings, restaurants) with wood being used as a construction material and insulator in conjunction with other nonwood materials. A survey of six European concert halls and their geometrical, acoustical, and construction data is pretty interesting. 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 10, 2010May 19, 2025 by Dale Phillips Letter: Use Any Wood You Like Letter: Use Any Wood You Like by John Calkin Originally published in American Lutherie #25, 1991 Dear Tim, In 1981 I bought a new Alvarez-Yari 6-string, with laminated rosewood back and solid spruce top. Lots of guitars sound as good, but hardly any sound better. Lots of guitars are as playable, but very few play nicer. I’ve worked on or played dozens of high end, exquisitely made guitars and a bunch of vintage pieces, and not one has ever blown me away. Early in my career I helped do sound at a local folk benefit. Lots of fine talent turned out, sporting a number of classy guitars. But a low-end mahogany Yamaha blew them all away, no contest. 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 10, 2010May 16, 2025 by Dale Phillips Letter: Veneer Backing Boards Letter: Veneer Backing Boards by Lloyd Zsiros Originally published in American Lutherie #30, 1992 Tim, The wood supplier I deal with for almost all of my materials (A&M Wood Specialty in Cambridge, Ontario — a frequent advertiser in American Lutherie) sometimes gets in quantities of backing boards. These boards are a byproduct of the veneer industry. As most of us know the veneer industry manages to get hold of some of the finest and most desirable logs of various species. These logs are then cut into manageable sizes, if necessary, and clamped into a massive carriage assembly which then moves the log past a stationary knife, neatly slicing off uniform thicknesses of veneer. The carriage assembly used large steel teeth to grab the log and the knife can only cut so close to these. What’s left is a piece of wood usually anywhere from about 1/2" to over 1 1/4" known as a backing board. Many of these are perfectly quartered and quite wide. They can often be purchased directly from the veneer mill or from suppliers like A&M at extremely attractive prices. I have obtained walnut, cherry, and beech this way at a fraction of the usual cost. The boards are often just thrown outdoors usually in the open so they may not be very attractive on the surface but I have obtained some of the nicest walnut I’ve ever seen from these. I’ve noticed some favorable comments in American Lutherie about cherry as an instrument wood. This is a good source for nice wide quartered cherry. Although I’ve never used this on a guitar I do have some 1' long, 20" wide, 1 1/4" thick quartered cherry I obtained a few years ago for $2 a square foot I’ve been saving for something special. It could be worth a try! Oh, and a word on A&M Woods. As they are an advertiser in American Lutherie, you may be interested in knowing I have had nothing but great service from them. They have been my primary source of materials for over 10 years and I can’t say enough good things about Andy and his staff at A&M.
Posted on January 10, 2010May 23, 2025 by Dale Phillips Letter: Osage Orange Letter: Osage Orange by Rion Dudley Originally published in American Lutherie #36, 1993 Dear GAL, I’d like to express my appreciation to all who have contributed to the GAL over the years. I especially want Rick Turner and Harry Fleishman to know that their knowledge, opinions, and ideas have been a great help to my lutherie work. The recent publication of the information on alternative lutherie woods has inspired me to share my own experience. A number of years ago (longer than I wish to remember), Ted Davis wrote an article about his experience using Osage orange for a small-bodied Martin-style guitar. I read that article with great interest, and purchased some Osage orange that was nearly quartered from Gilmer Woods. The wood sat around my shop and collected dust for quite awhile. 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 10, 2010May 23, 2025 by Dale Phillips Letter: Crystals in Wood Cells Letter: Crystals in Wood Cells by Bill Moran Originally published in American Lutherie #35, 1993 Dear Tim, In American Lutherie #33, Nicholas Von Robison has sent a signal, maybe unknowingly, that there are scientific activities related with lutherie that are not well known or yet fully appreciated as part of quality instrument assessment. I am referring to the growth of crystals in the wood parenchyma cells. Concern over acid rain also leads me to openly ask, what are the effects of acid rain on the crystal development and their performance, and who is doing the studies, if any? I hope this letter will catch the attention of the Wood Chemists and the true wood anatomists amongst the membership and that they also will respond to my questions. Mr. Von Robison appears to be well informed on wood chemistry and I hope he will publish related data or suggest sources for the details he has on these subjects. Microphotographs of wood samples taken under the electron microscope has shown that crystals are present, and separate spectrum analysis have been made of their mineral content. Information is sparse but I believe important since I am referring to the crystals in spruce and maple woods, although I do have reports describing the crystals in a number of other woods. This study includes unique measurement instrument construction, computer programs, resources, and time. I will be pleased to correspond with anyone pursuing study related to material in this letter.
