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Re: Clarinet Swedging Tools

Author: clarnibass
Date: 2020-05-20 21:52

>> And a barrel fraise/hinge tube shortener with the appropriate diameter pilot can then be used to true up the ends of key barrels that have become distorted through swaging so they won't cause uneven wear or damage the pillar faces or adjoining key barrels. <<

Very important! Swedging and having the key bind without a good way to fix that can be pretty terrible... both around the rod and the length of the hinge.
For the best fit it's common to always swedge a fraction too much and then remove a tiny amount. It also makes the end perpendicular to the hinge, it can be a bit wonky after (or before) swedging.

>> the left hand levers... My advice is to not go for perfection... <<

Perfection is actually impossible. If the hole was perfectly round and the pin was a perfect ball shape exactly the size of the hole (let's say a micron smaller), it would bind. Because of the locations of the hinges, the pin "moves" to the side inside the hole while the lever is operated. If it's "perfect" in one position, it will bind in the other. That is why the regular ball shape is not the best, it should be a sort of ellipse.

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