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Re: measuring clarinet bore

Author: Bob Phillips
Date: 2010-11-08 15:47

I hope that you will make a set of comprehensive measurements along the bores of several clarinets --including different instruments of the same make and model.

My impression is that a poly cylindrical bore consists of a series of bore diameter increases as you go down the bore from mouthpiece to bell. These are supposedly responses to the effects of open tone holes that foul up the theoretical beauty of a constant diameter cylindrical bore.

Please, make your measurements along at least two planes that pass through the centerline of the bore. I would like to know how round a mature clarinet's bore actually is. Does it become elliptical with the major axis perpendicular to the growth rings? Is ovalization a contributor to a wooden instrument's being "blown out"?

A lot of work to do here, and thanks in advance.

Bob Phillips

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