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Re: bore shape and tone holes

Author: Bob Bernardo
Date: 2016-12-03 14:06

I think I misread the question. With a straight bore and a tapered bore.

I really can't answer the question, other than the hole sizes have to be different. As for under cutting the holes I'm not experienced enough to know the answer with straight bores, but polycylindrical bores often require undercutting. This I've done myself on most of the Buffets or actually all of the Buffets (R13's) I've owned. Buffet has a lot of stuffy notes and problems with 10ths. It's a game finding the right barrel and then a bit scary when you start undercutting. Some of the things you worry about are the key heights that have pads on them. At the factory Buffet doesn't really care, or they don't know, so you have to adjust this first and it can take hours and hours to do it right. You can't really just start undercutting, because once the wood is gone and you've made a mistake, you now have to fill and re-drill. There are a few ways to fix this but with anything, it's best to d it right the first time.

I would think that straight bores need to be undercut as well, probably more.

What was so surprising to me when playing the 2 different Yamaha's was how even every note was and in tune the notes were, on both the German bores and the CSVR's. When I go to the factory next month I'll take a very close look at the tone holes on the CSG's. On the set of horns I have, there is undercutting done to several holes.

I'm still not sure if I answered the question. As far as sound to tone, the 2 different Yamaha's sounded so close together.

Designer of - Vintage 1940 Cicero Mouthpieces and the La Vecchia mouthpieces

Yamaha Artist 2015

Post Edited (2016-12-03 22:44)

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