Author: clarnibass
Date: 2017-10-04 23:31
I assume you mean hinge tubes as opposed to hinge rods with pivot screws, which are usually not swedged (there are exceptions). Shims have a lot of down sides.
They only help with the less critical end play, and not the play around the rod screw, which is far more important.
Putting them is annoying and can be difficult, having to hold them while inserting the key. Even if you get them to "stick" to the end of the key or the post (e.g. with grease, etc.) they almost always move once you try to fit the key in its place.
The above becomes even more annoying when you need to take a key on and off a few times, which happens pretty often.
0.05mm is not accurate enough if you want to do it really accurately. 0.1mm would very often be too thick, for example.
>> bend the delicate keywork <<
Swedging doesn't do that. The reason it's done is because it's an excellent and efficient method. The keywork isn't delicate, at least not in the sense that anything bad would happen if someone who knows what they are doing is swedging it.
Both swedging pliers and collets are used, depending on the key and what is needed.
When swedging to lengthen a key, you would usually lengthen it slightly too much and then face it with a hinge tube shortener.
By the way permanent "shims" can be a good idea sometimes i.e. soldering an extension, but this is a more expensive repair which also takes longer and many times overkill.
|
|
The Clarinet BBoard
.jpg){kind=small}
.jpg){kind=small}
.jpg){kind=small}
.jpg){kind=small}
.jpg){kind=small}
.jpg){kind=small}
