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Sometimes you just wonder. I figure once is “an accident.” This? Not so much…
I’m thinking this is one of those “young scholars” Joe keeps referencing.

Mouthpiece as a hammer. Why? Because they can, which is why humans do most of the things they do.

Probably exactly what it was. Turkeys.

More than once on French horns I've seen human teeth marks patterns crushing the tubing around the bottom curve where the diameter of the tapered tubing is about 6/10 of an inch. The young scholars just put their mouths on them and bite down, again: because they can.
The first time I saw this it was a pair of Conn single horns that belonged to a small religious private school.
This was actually back towards the end of the era where we still had some semblance of civilization - around the mid to late 1980s.

My son had a school trombone he used for marching band with teeth marks on it. Someone apparently needed to feed their kids more often. Much more recent, much less civilization.

MiBrassFS wrote: ↑Wed Jul 10, 2024 5:36 am My son had a school trombone he used for marching band with teeth marks on it. Someone apparently needed to feed their kids more often. Much more recent, much less civilization.

And an iron deficiency?

My son is probably going to use this in basketball/hockey pep band. He plays trombone, but wants to avoid having someone crunch another trombone. The leadpipe was closed down over 65% (see the “before” above). It probably should have been replaced, but since I don’t work in a shop or business, my access to any sort of inventory of parts is limited (usually none…). I didn’t unsolder it. Just ran a few dent balls with a cable through it. Close enough for pep band!

The whole area is now pretty much missing lacquer. Any slight movement of the metal to undent it caused the lacquer to shatter and flake. King lacquer has sure changed…

I’m thinking about picking up some gold rattle can lacquer. This one and a tuba I have might do well with a bit of a spot over spray. Pretty hot and humid for any of that right now, I would think.

MiBrassFS wrote: ↑Sat Jul 13, 2024 11:05 am I’m thinking about picking up some gold rattle can lacquer. This one and a tuba I have might do well with a bit of a spot over spray. Pretty hot and humid for any of that right now, I would think.

You probably think this is crazy and that I'm a daredevil, but if you get your lips nice and dry so that you don't end up spitting on the instrument, you can go out into hot humid air, put a nice coat of rattle can in an area until there's no sugar in the fiinish, and as it blushes you can paint it with a flame from a propane torch and blow on it (not timidly, but with resolve...at least "forte" air) the same spot at the same time, the force of the air from your blowing will prevent the wet lacquer from catching on fire, and you will be able to pull out the moisture from behind it and - at the same time - dry it nearly instantly. Again... you can tell me I'm a crazy daredevil, but it works and I've never been burned...

... I wouldn't try it on the flare interior, because the air that you're blowing has somewhere to go - rather than bouncing off the surface, as your air bouncing off the surface is what disturbs the potential for combustion.