Posted on June 28, 2024May 14, 2025 by Dale Phillips Spraying Lacquer With Nitrogen Spraying Lacquer With Nitrogen by Harry Coleman Originally published in Guild of American Luthiers Data Sheet #64, 1978 and Big Red Book of American Lutherie Volume One, 2000 There are several advantages of using compressed nitrogen for spraying over the more conventional air compressor. Air compressors, when pulling air right out of the atmosphere, also pull the moisture in the air right into the storage tank. Most of it can be filtered out, but not all. In addition, oil has a way of working its way from the piston assembly in the compressor into the air line and ending up on your work. Compressors are expensive and do break. You have to have a long enough air line to get the compressor out of the finishing room or a spark from the motor could blow you away. Long lines cause a drop in air pressure. With nitrogen you are assured of 100% clean, dry “air.” Since there’s no motor involved, you can put the whole unit in the finishing room and use a shorter air line. The only disadvantage is that air is free, but nitrogen isn’t. You also have to take your tank out to get it filled. This is inconvenient, but the quality of the spray job makes it worth the trouble and expense, especially for a low-volume shop. 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 August 1, 2022May 20, 2025 by Dale Phillips Spray Gun Agitator Spray Gun Agitator by Jimmie Van Originally published in Guild of American Luthiers Data Sheet #91, 1978 A new product that I found to be most helpful when spraying a finish or other things that had to be in complete suspension to assure uniform coverage, is a agitator siphon cup assemble sold by N.A.P.A. auto part stores. This cup will work on most major brand guns. The 1 quart cup provides constant agitation from air right off of the same line that your gun works off of, no extra line is needed. You can control the mixing speeds of the agitator, and does not require an extra cleaning. The part number you need to ask for is model 70-707. This may be of big help to those of you who do a lot of finishing work. ◆
Posted on August 1, 2022May 20, 2025 by Dale Phillips Glass Jars for Spray Guns Glass Jars for Spray Guns by Tim Olsen Originally published in Guild of American Luthiers Data Sheet #91, 1978 Commercial spray guns, such as the DeVilbiss type MBC, typically use aluminum cans to hold the juice. Aluminum cans are lightweight and unbreakable. They are also expensive and inconvenient, in that they must be labeled; the contents can not be viewed without uncorking the cans. By substituting glass jars for the aluminum cans, many advantages can be realized: Jars are cheap. Jars are clear, allowing one to observe the contents instantly, and to check for sediments, precipitates, jungjills, farfles, and other forms of grungus. 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 12, 2010May 30, 2025 by Dale Phillips Review: Guitar Finishing Step-by-Step by Dan Erlewine and Don MacRostie Review: Guitar Finishing Step-by-Step by Dan Erlewine and Don MacRostie Reviewed by John Calkin Originally published in American Lutherie #61, 2000 and Big Red Book of American Lutherie Volume Six, 2013 Guitar Finishing Step-by-Step Dan Erlewine and Don MacRostie Stewart-MacDonald, 1998 ISBN 978-0964475236 The death of lacquer as an available finish was pronounced at least ten years ago. Because lacquer was so environmentally hazardous, the various levels of government were supposed to restrict its use to the point that manufacturers would find no profit in producing the stuff. Well, folks, it hasn’t happened, and lacquer remains the premier finish for most string instruments. If you’ve yet to have your first heady whiff of lacquer fumes, you should study Guitar Finishing Step-By-Step before you dive in. If your plans include the re-creation of the many factory guitar finishes, you should have this book regardless of your experience level. The book has a strange flow to it, though. There are only three stages of finish work — wood prep, finish application, and rubout. However, the plethora of tools and materials available today leave too naïve an approach open to confusion and failure. To avoid this, Erlewine and MacRostie rely on detailed description, technical information, and a degree of repetition to cover all the bases thoroughly. For instance, a description of power sanders is followed twenty pages later by a description of power sanding. Both sections include important and overlapping information. Readers who skip about in order to get on with their finish work will find themselves handicapped. 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 12, 2010May 29, 2025 by Dale Phillips Review: Sunburst Finishing by Dan Erlewine and Don MacRostie Review: Sunburst Finishing by Dan Erlewine and Don MacRostie Reviewed by John Calkin Originally published in American Lutherie #63, 2000 and Big Red Book of American Lutherie Volume Six, 2013 Video: Sunburst Finishing Dan Erlewine and Don MacRostie Stewart-MacDonald, 1999 Sunburst Finishing is sort of a strange video in that it’s intended to replace Stew-Mac’s out-of-date Color Finishing, yet it doesn’t cover nearly as much territory as the older film. So be it. It only costs half as much as the old tape, and the information included may be as much as you need. The only guitar involved is an archtop Guild with a maple face. Some repair work has been done to the top before the tape begins, and the finish has also been removed. The job at hand is to match the sunburst on the top to that of the rest of the guitar. A yellow toner has to be mixed for the maple, then a brown candy is blended to match the color of the burst. The techniques of precision blending are the heart of the video, an operation at which MacRostie is a master. Chip sheets and blending boards are made which can be stashed away for future reference. The work is also referenced to the recipes in MacRostie and Erlewine’s new book, Guitar Finishing Step-By-Step (p. 530), which is a useful touch. There is no wood prep involved in the job (as far as the camera is concerned), as this video is intended to work in concert with Spray Finishing Basics, another video by the same dynamic duo. Touchups are necessary when the binding is scraped after the color coats, and the airbrush work is caught on tape. A close look at MacRostie’s scraping tools is a helpful segment. 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.
