Author: jhoyla
Date: 2012-04-01 05:18
There was a superb article about undercutting in the IDRS Journal:
Great Oboes of the Twentieth Century
The Collaboration of W. Hans Moennig and Marcel Tabuteau
By Shelly Sublett and Alvin Swiney
In this article all sorts of undercutting were discussed, together with the effect on all the octaves. It is an art as much as a science and DEFINITELY not for the faint of heart. Be aware that undercutting will also affect every note below the tone hole in question - you change the volume of air in the oboe, you are going to affect pitch elsewhere, however minutely.
Before you get into this, may I suggest you first get the instrument seen by a technician for general adjustment? In particular, check the seal and fit of the tenon joint, and the height of the first-finger RH touch. The reason is that the G note tone-hole is actually under the RH first finger on the lower joint; a poorly fitting tenon would have most affect here. The RH 1st finger touch is "stopped" by the protruding lug that operates the con-bar to the LH A-Bb and B-C notes. It protrudes, so it could have been bent slightly, affecting the G.
2c,
J.
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