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I have an old WWI US Army-issue bugle with the mouthpiece rusted onto the body. what it the best way to get the mouthpiece off without hurting the rest of the instrument?

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up vote 6 down vote accepted

1.The best way is to take it to a repair shop! They might even fix it for free.

2.Otherwise there is a specific tool for separating mothpieces from trumpets that you could get (for instance the Bobcat Mouthpiece Puller which you find at for instance Amazon), but the first option is probably easier and cheaper if available to you.

Trying to fix it yourself in some other way using force, for instance by fixating the mouthpiece somehow and then trying to twist the horn, you'll run the risk of seriously damaging the instrument.
Trust me, I've tried it... X-(

Watch this video to see how it's done (and how it shouldn't be done):

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I'd expect to need some kind of solvent and precision tools (like dental tools) to get it in there, but if there's a shop you can get to, definitely prefer that. – luser droog Oct 4 '12 at 7:13
I thought there would be some miracle solvent, apparently not. Thanks! – segiddins Oct 4 '12 at 17:59
@SamuelEGiddins: There might be, but haven't heard of it. Maybe someone else has. Perhaps you should add it specifically to your question? – Ulf Åkerstedt Oct 5 '12 at 7:33
I think your answer is probably the best one – segiddins Oct 7 '12 at 19:58
Would a penetrating oil like WD-40 be harmful? If it's just rust it might help. – Agos Oct 9 '12 at 8:27

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