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Re: Octave Vent

Author: Chris P
Date: 2010-06-08 23:38

If you're making your own 8ve insert removal tool, make the business end of it from a single piece of flat steel with the end cut and filed to leave two projecting round prongs on it that locate into the holes in the insert (and enough clearance between them not to damage the crown of the bedplace). Better to use something with fixed prongs than pliers as pliers can open/close when you don't want them to.

Once you remove the 8ve top, give the insert (the part fixed into the top joint with the internal thread) and the hole going through the base into the bore a good cleanout to remove all grot and corrosion, so use a metal scraper fashioned from a piece of steel or a thick needle spring, but do try to keep the inside smooth and shiny rather than leaving it rough.

The vent hole through the top part should be between 0.7mm and 0.75mm, though some makers do have a larger vent hole in the upper vent which can be 0.8mm or maybe more. Best stick with 0.7mm or 0.75mm on both vents to be on the safe side. If the hole is too large, you can always fill it in with soft solder and redrill it to a smaller diameter (but still keeping the depth the vent hole has to go through same).

Former oboe finisher
Howarth of London
1998 - 2010
The opinions I express are my own.

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