Chiff and Fipple Forums

https://www.dropbox.com/s/37sog48temxuv ... e.JPG?dl=0
Not sure if the picture that i added is accessible.
If the edge of the blowhole that is on the inside of the flute bore is chamfered or radiused, will it make any difference to the tone of the flute.
Will it help or hinder the tone or even make it harder to play.

I think it depends on which face of the hole we're talking, Bansuri. On the two faces that your image shows, the stopper side and the rest-of-the-flute side, I would expect some chamfering to be an asset, reducing aerodynamic losses and noise. Probably no harm and some good on the face under the lip too. But my experience suggests not a good idea on the bottom of the face we are blowing the jet towards. I suspect it confuses the jet switching action. Of course, it might also depend on what degree of chamfering you have in mind.

That's been my experience, but don't take it as gospel! (Hmmm, Mathew, Mark, Luke, John.... and.... Terry? Or have I perhaps left it a bit late?)

It would be good to hear from other makers.

Thank you for your thoughts Terry, think i will leaves things as they are in case i make it worse.

Yeah, it's always harder to put the wood back....