Mouthpiece shank cracks

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Chazzer69
Posts: 328
Joined: Sat Jul 06, 2019 12:40 am

Mouthpiece shank cracks

Post by Chazzer69 »

Is anyone aware of any mouthpiece restorers/re-platers that have a method for repairing or filling in small cracks that can occur at the end of shanks? I gather that 'trimming' the end is not a good idea as it can negatively impact playing with that mouthpiece. I can't find any solid references to this kind of repair or restoration on the interwebz. There was one person who mentioned using a silver alloy (I think) of some type, but it was a one-off reference.

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tbonesullivan
Posts: 1935
Joined: Tue Jul 02, 2019 9:06 am

Re: Mouthpiece shank cracks

Post by tbonesullivan »

What kind of mouthpiece is it? Can it simply be replaced? I'm pretty sure silver soldering or brazing could be used to join the cracks, but it would need to be a method that will withstand the re-shaping the shank is going to need after that kind of repair. Has the mouthpiece ever been replated? It looks pretty thin at the end of the shank.
David S. - daveyboy37 from TTF
Bach 39, LT36B, 42BOF & 42T, King 2103 / 3b, Kanstul 1570CR & 1588CR, Yamaha YBL-612 RII, YBL-822G & YBL-830, Sterling 1056GHS Euphonium,
Livingston Symphony Orchestra NJ - Trombone
GabrielRice
Posts: 1575
Joined: Fri Mar 23, 2018 7:20 am

Re: Mouthpiece shank cracks

Post by GabrielRice »

I would ask Greg Black or John Stork directly what can be done.
Gabe Rice
Stephens Brass Instruments Artist

Faculty
Boston University School of Music
Kinhaven Music School Senior Session

Bass Trombonist
Rhode Island Philharmonic Orchestra
Vermont Symphony Orchestra
doctortrombone
Posts: 153
Joined: Sat Apr 21, 2018 4:50 pm

Re: Mouthpiece shank cracks

Post by doctortrombone »

I've done it a couple of ways with some of the older Bach New York mouthpieces that have very thin insertion ends on the shanks. On a few, I was able to fill in the cracks with a silver phosphorus brazing compound, and reshape them. Others simply wouldn't take the silver solder. On a few, I ended up cutting off the last 10 mm and butt-brazing the bottom of a shank from another mouthpiece, then filing and sanding to shape. It's a very labor intensive process, so it would have to be a very special mouthpiece.
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