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Letter: Price of Vintage Instruments

Letter: Price of Vintage Instruments

by John Calkin

Originally published in American Lutherie #61, 2000



Tim,

Chris Foss isn’t the only one baffled by the cost of vintage instruments. I’ve wanted to believe right from the start that the vintage scene was a shuck created by a few knowledgeable dealers who spread their gospel from regular columns in the music rags. The truth, no doubt, is that any old thing you can point to is interesting to someone, and that once enough people show an interest that thing becomes collectible and the price shoots up.

Some objects are life enhancing, and different people find different objects. Folks who collect old porcelain don’t eat off their collection. Antique chairs may never be allowed to perch a human. There are no doubt instrument collectors who never play their guitars. It’s not a shame, it’s just the way it is.

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Letter: Early Electric Bass Making Experiences

Letter: Early Electric Bass Making Experiences

by William G. Snavely

Originally published in American Lutherie #69, 2002



Guild,

About thirty years ago I walked into a shop in Berkeley. The fellow there made lutes. I told him I wanted to make an electric bass neck without a truss rod and was looking for fretwire. He asked me what the tension was on such a neck. Like I’d know. He showed me one of his lutes. They were nice, which is what I said. He didn’t seem to think that was enough, but I was young and thought that people valued honesty a lot more than they actually do. He didn’t really want to sell me any fretwire, but he finally said he would sell me some if I bought a pound. He wasn’t at all happy that I decided to accept his offer.

I was in love with the bass, which I played at least six hours a day. I had a jazz bass that people said was very good, but it made my left hand numb and sounded crappy. I didn’t know it was soon to be a vintage instrument from the golden period. I thought it probably sounded so bad because the neck was so thin and hollow with a metal rod in it. Plus the saddles rested on little bitsy set screws.

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Letter: Thicknessing Router Article in AL#101 – Surfacing Bit

Letter: Thicknessing Router Article in AL#101 - Surfacing Bit

by John Park

Originally published in American Lutherie #102, 2010



Tim,

Since the thicknessing router article (AL#101, p. 58) was written, a friend has tried using a 1" surfacing bit. It has blades on the bottom, much like an auger, which seems to have the trait of lifting the wood. I think it has a propeller action that creates a suction problem. In my opinion, using a cutter like that defeats the purpose. A straight bit cuts the end grain and so can disregard runout and figure.

There will always be a slight suction due to the velocity of the air over the top surface being higher than the air under the wood. This is Bernoulli’s Principle which is what gives wings lift. I use a 3/4" straight bit and I’ve yet to encounter enough lift to make a significant error at a dimension of about 2MM or .080". Using this device to give less thickness than that could cause problems because the span from the hold-down remains fixed while the stiffness drops as the cube of the thickness. In other words, making veneer would not be practical.

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Letter: Photos from China

Letter: Photos from China

by William Garofalo

Originally published in American Lutherie #101, 2010



Dear Tim —

I just came back from two months in China. I went there to get my teeth fixed; an excellent quality four-tooth bridge was $600. I was also interested in seeing a violin factory that I had seen on Chinese television here in the USA. My wife is Chinese and we have three antennas that bring in many Chinese stations.

Well, I got my teeth and then Charley, a friend of my wife, drove us out into the country to the violin factory. They make a lot of the cheaper violins that are sold in the world. It was a huge brick building with room after room filled with violins, violas, cellos, and bass viols. It was Sunday, and only one man was working. He had about twenty violins on a shelf, and he was putting the soundposts in them. I bought a special tool to set soundposts years ago, but after many hours of trying, I gave up. This man was setting the posts in about two minutes each.

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Letter: John Calkin Article in AL#99 on Spanish Neck Style

Letter: John Calkin Article in AL#99 on Spanish Neck Style

by David Freeman

Originally published in American Lutherie #102, 2010



Hello Tim —

After reading John Calkin’s article in AL#99, I would like to add to the discussion of neck rake.

It is true that building in the Spanish integral-neck style allows everything to be attached flat. The top is held flat, more to get the sides on at 90° than to get the neck rake proper. As soon as the body is off the form, the top rises in a curve, depending on the bracing style and relative humidity. These deviations will affect final neck set.

The full-size side-view drawing John discusses is a valuable exercise to determine angles to aim for in neck rake. The variable of top arch is the most difficult to determine. In the Spanish style, I will allow 1/16"–1/8" for top arch. This varies with top graduation and brace straightness or taper on the glue edge. Both will add to top arch. I also keep my relative humidity between 40%–50% when assembling the body. I try to dry the top to 25%–30% humidity when I am bracing them. This allows the top to swell considerably and have a lot of shrink before it cracks in dry conditions.

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