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 Re: Polycylindrical vs Cylindrical
Author: Mark Charette 
Date:   2008-08-24 00:48

cigleris wrote:

> Please explain Mark

I'm not sure what to explain ... undercutting refers to removing wood where the tonehole enters the bore, cylindrical or poly-cylindrical refers to the bore, not the toneholes.

Most if not all bores have a taper (not really cylindrical but acoustically acts as one - the cylinder is actually a section of a cone with a very small taper). Poly-cylindrical refers to a bore that is made up of multiple (ordinarily 3) cylinders, with a sharp step (discontinuity) between each cylinder.

That's why undercutting and bore type are not mutually exclusive.

Wide bore instruments generally do not need or have little need for undercutting to adjust the tuning - why, I'm not so sure. I'm sure it was empirically derived before someone figured out the mathematics behind it.

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 Topics Author  Date
 Polycylindrical vs Cylindrical  
dim 2008-08-23 04:50 
 Re: Polycylindrical vs Cylindrical  
Tobin 2008-08-23 14:30 
 Re: Polycylindrical vs Cylindrical  
Tobin 2008-08-23 23:29 
 Re: Polycylindrical vs Cylindrical  
Don Berger 2008-08-23 16:06 
 Re: Polycylindrical vs Cylindrical  
cigleris 2008-08-23 21:25 
 Re: Polycylindrical vs Cylindrical  
Mark Charette 2008-08-23 21:56 
 Re: Polycylindrical vs Cylindrical  
cigleris 2008-08-23 22:24 
 Re: Polycylindrical vs Cylindrical  
Mark Charette 2008-08-24 00:48 
 Re: Polycylindrical vs Cylindrical  
Koo Young Chung 2008-08-23 23:11 
 Re: Polycylindrical vs Cylindrical  
cigleris 2008-08-23 23:16 
 Re: Polycylindrical vs Cylindrical  
Koo Young Chung 2008-08-23 23:23 
 Re: Polycylindrical vs Cylindrical  
C2thew 2008-08-23 23:39 
 Re: Polycylindrical vs Cylindrical  
cigleris 2008-08-23 23:59 
 Re: Polycylindrical vs Cylindrical  
Tobin 2008-08-24 00:32 
 Re: Polycylindrical vs Cylindrical  
Tobin 2008-08-24 00:37 
 Re: Polycylindrical vs Cylindrical  
Caroline Smale 2008-08-24 10:39 
 Re: Polycylindrical vs Cylindrical  
Tobin 2008-08-24 14:53 
 Re: Polycylindrical vs Cylindrical  
Grabnerwg 2008-08-24 16:23 
 Re: Polycylindrical vs Cylindrical  
Tobin 2008-08-24 16:31 
 Re: Polycylindrical vs Cylindrical  
Chris P 2008-08-24 16:39 
 Re: Polycylindrical vs Cylindrical  
graham 2008-08-25 18:56 
 Re: Polycylindrical vs Cylindrical  
Caroline Smale 2008-08-25 22:09 
 Re: Polycylindrical vs Cylindrical  
David Spiegelthal 2008-08-26 00:40 
 Re: Polycylindrical vs Cylindrical  
D Dow 2008-08-26 19:07 
 Re: Polycylindrical vs Cylindrical  
tictactux 2008-08-26 19:14 
 Re: Polycylindrical vs Cylindrical  
graham 2008-08-27 06:53 
 Re: Polycylindrical vs Cylindrical  
BobD 2008-08-26 21:20 
 Re: Polycylindrical vs Cylindrical  
cigleris 2008-08-26 21:35 
 Re: Polycylindrical vs Cylindrical  
skygardener 2008-08-27 00:12 
 Re: Polycylindrical vs Cylindrical  
cigleris 2008-08-27 07:46 
 Re: Polycylindrical vs Cylindrical  
stevesklar 2008-08-27 12:58 
 Re: Polycylindrical vs Cylindrical  
stevesklar 2008-08-27 13:12 


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