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replacement bumper cork material

Author: jhoyla
Date: 2011-03-28 12:48

Any recommendations for replacement bumper corks?

I finally narrowed down a really horrible "bug" in my oboe to a nasty combination of two things.

My oboe would - occasionally - insert a tiny blip into a transition from A-B, in either register. Almost as if the RH middle-finger key was "lazy" in rising. Try playing the opening phrase of the Beethoven Violin Concerto while worrying about that....

Was the bed-place sticky? Cleaned it, cleaned the pad. Nope.
I cleaned out the main top-joint assembly, re-oiled and re-assembled. Nope.
I cleaned out and re-oiled the linkage from G# for the Bb-B trill - perhaps that lever was preventing the B key from rising? Nope.
Perhaps the plastic-covered appendage to the B key (for the above-mentioned G# linkage) was sticky? Nope.

What else to check? Is the spring too weak? YES - part of the problem - but the metal seems weak and won't hold a stronger springing. Someday - soon - I must replace this spring. But this can't be the whole problem. WHAT ELSE?

Finally, I found it - a sticky bumper cork on the A-B connection on the main assembly. Probably caught a droplet of oil a while back. I scraped it off entirely and re-adjusted, and the problem has gone. Instead, I have a clicky key.

What can I use to replace the bumper cork? How do I stick it down?

J.

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