03/04/2026
Here is a before and after of a tricky trombone repair. This trombone had a bad crunch which ripped the tube away from the rotor casing at the hard solder point. To fix this, as a hard solder needs to be much hotter than a soft solder, we had to disconnect all the soft solder joints to isolate the rotor casing. The metal of the old tube was very worn and thin, and using a high-powered torch for soldering would create a whole in the tube. Because of this, we made a new tube and fit it to the rotor casing. Hard solered it and soft soldered all the joints back together and... Voila! We have a working trombone once more. This is a rare issue, which made it a fun project and a great learning experience.