As I write this, I am actually just about done working on my project trumpet. We've covered a lot of ground at school this semester, and it is tough to keep up with all the activities we get to work on, so I apologize for not writing about this yet. This post is a quick overview of my project trumpet, showing how it was when I received it, and the first few steps to fix it.
When I first looked over the instrument, a Bach student trumpet, the first thing I noticed was many dents alllll over the instrument. Almost too many, hmm... But, really these horns are our chance to practice a lot of standard repairs and dent work that we learned about in class--things that can happen all the time in real life to people's instruments. So essentially, if the selected horn didn't have the problems we were looking to fix, said problems were (ahem) added on a case-by-case basis.
|Here it is! A lovely shot of the bent mouthpipe and lower-main to 3rd casing knuckle dent.|
|More knuckle dents on the opposite side of the valve block.|
|Looking down the length of the horn, you can see where the mouthpipe, bell stem, and bow are all bent. Plus some nice dish dents along the bow!|
With everything cleaned, and all needed work logged on the repair tag, it was time to do some flexing. First: the bow! I started by hand, as below, but couldn't get it to move enough to straighten completely.
|I used some clean buffing gloves to get a more cushioned grip on the bow. The vise holding the bench peg is loose (pivots if turned) to ensure proper bracing while flexing. Also check out the lovely sharp dent in the throat, ow!|
To get enough force to move the bow where I wanted, I had to loop a woven belt through the bow, put both belt-ends in a vise, and snap the bow downward against the belt. This was a technique created in a shop that worked on many Yamaha trumpets, which have notoriously thick bells, making them tough to move. I'll post the name of the technique as soon as I get back to my notes, to give credit where credit is due.
|Hooray! The belt worked great, and it's all straight again. What a cool idea.|
More to come soon on dents and my mouthpipe project. Since the mouthpipe on my project trumpet had a tiny spot of red-rot or dezincification, I got to use this instrument for that project too. Stay tuned!