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Re: Repair of tone hole in plastic clarinet

Author: Chris P
Date: 2017-09-28 04:24

If it's just the raised burr, then you could always countersink the extreme edge to remove the burr - a hand-held spherical reamer will do this, but it will leave an elliptical countersink due to the curvature of the surface if you go straight in and ream perpendicular to the bore, but you can run it around just the edges to get a more even finish.

You should be able to do a better and more uniform job running a deburring tool all the way around the edge and take your time over it as well as gently so the deburring tool doesn't catch and dig into the plastic.

If you choose to fit a raised tonehole insert/chimney that sits around 1mm above the joint surface, then the diameter of the D/A tonehole will need to be made larger by between 0.5mm to 1mm than the existing plain tonehole to bring the D and upper register A up to pitch.

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

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