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Re: Register key clicking noise

Author: Chris P
Date: 2017-09-10 06:09

More often than not I see flat springs installed burr side down, so that will wear out the saddle set into the wood for the tip to run in. They're made by being stamped out from sheet metal, so one side will always have a burr along the edges and the other side will have slightly rounded edges. The burr side should be the top side (facing the underside of the key) when fitted.

So either remove the spring and carefully bed it to form the curve in the opposite direction (might be risky on blued steel or phosphor bronze flat springs) or file the tip smooth and slightly rounded and burnish it to a bright shine to make it run smoothly in the saddle.

If the saddle has been worn by the spring, then that will need to be addressed - might not be easy if it's a piece of steel rod set into or threaded into the wood if it can't be removed. If it's a piece of thin sheet metal glued into the spring slot, remove it and flip it over or replace it with a new piece of flat spring cut to the same length and shaped the same as the original. Also applying a drop of heavy key oil or cork grease will help the spring tip run on the saddle smoothly.

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

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