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Discussion Starter #1
On one of my saxophones the low c tonehole is squished.

If I level this tonehole with care does the circumference have to be circular?

If the pad seals though the tonehole is not exactly circular does it really matter ?
 

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#1
yes it does have to be circular but don't do it your self godamit!!!!!!!!!!!!
take it to your tech,

#2yes it does matter, it probably means the whole tube is out of shape and the result of that is the squished tone hole, so intonation is likely to be off.
 

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Actually no, the tone hole does not have to be circular. Take a look, for instance, at the Lopatin SquareOne flute, with square tone holes (but don't believe the hype). Many handmade wooden instruments have oval tone holes, and crescent inserts for tuning make tone holes non-circular.

SearjentSax makes a good point though: if the tone hole was constructed to be circular and it no longer is, there is a good chance that you have distortion of the body tube, since tone holes are connected to the body tube. If it is a soldered tone hole, then it is almost certainly leaking. Levelling a tone hole is a non-reversible procedure, so you don't want to be doing that before finding out if it would be better to have the hole put back in its original shape.

Toby
 
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