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Measuring Bore Diameter

Author: bill28099
Date: 2004-02-16 17:51

I've just spent close to 2 hours searching this site for some standard method of measuring clarinet bore diameter and seem to have come up with none.
What is acceptable?

Here is what I have done for my antique and a half Bb Buffets. Using a telescoping gauge I go down the top and up the bottom of the upper section by .560". Then three measurements are taken at 120 degree rotations and averaged. Measurements are made with a set of 6" digital calipers.

On a 1953 the upper measurement is .576" and the bottom .569"
On a 1919 the upper measurement is .585" and the bottom .582"

From the above data what would one use for a bore diameter? How come the upper measurement is bigger then the lower?

I started this project to attempt to determine if the 1919 has been subject to shrinkage over the years. Do any of you have measurements from pre 1925 Buffets?

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Measuring Bore Diameter new

bill28099

2004-02-16 17:51