I was under the impression that if cavities get carved inside a bore
(not just pin-pricks of drill points) with the cavity around the sound
hole area, it will reduce the pitch of that particular note to a slight
extent in the bottom octave (and more so in the second octave, which is
out of scope for NSP), so it may save a chanter fill and re-drill
operation by "spooning" in the bore around the hole (let's say a bottom
E that is too high).
Dave S
On 2/10/2011 11:38 AM, Julia Say wrote:
On 9 Feb 2011, Philip Gruar wrote:
Well, quite. One can both hear and feel the drill reaching the bore.
Nevertheless
it was something I was warned about, and was checked up on.
Now I'm wondering about the acoustic effect of all those "dimples" that do
occur in
various makes of pipes (historical and otherwise) on what I believe is supposed
to
be a smooth shiny bore.
(Not to mention all the "agricultural" standard bores that are about - this a
phrase which makers fettlers sometimes use!)
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