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MOUTHPIECE MODIFICATION
Opening a mouthpiece backbore.
Opening a mouthpiece throat.
 
- Standard cup thread
sizes are .750-36 (Giardinelli) and .765-36 (Bach). We can duplicate any
maker's
threads (Including Reeves Quick-32). If you have a favorite rim we can cut it
off the the mouthpiece and thread it to fit on your threaded cup or we can
thread cups for the rim.
Thread cup to accept Warburton Back bores
- $40.00
- If you have a mouthpiece cup that you love, but need to
change the sound or feel of your playing,
we can thread any cup
to accept Warburton, Kanstul, or Giardinelli back bores. This will eliminate the
search for various mouthpieces for various horns or styles.
Cast and Measure Custom Mouthpiece -$250 (Base
Price)
- With the help of CNC
technology, we can cast and measure your mouthpiece for various purposes. Many
people have older custom mouthpieces that are one of a kind. What happens when
that mouthpiece is destroyed or stolen? If we have a cast on file, we can
fabricate a replica of that mouthpiece at any time. Also it easy to reproduce
copies of your mouthpiece for students and very easy to slightly change the
dimensions of your mouthpiece to suit your needs.
Altering Mouthpiece Exteriors

With our new CNC technology, we are able to reshape and cut down the outside
shape of large bodied mouthpieces to more traditional specs. We offer this
service for the trumpet player who plays equipment not accepted by their
employer or auditioner. After this process, you may also wish to re-plate, making
the brand of your mouthpiece undetectable.
- Alter Mouthpiece exterior in silver plate-
$75.00
- Alter Mouthpiece exterior in gold plate-$85.00
- We use the best
silver and gold plating obtainable and we guarantee our plated finishes
for one year. We do all the cleaning and buffing in-house. When re-plating
mouthpieces it is vitally important to maintain the contour of the rim and the
edge of the cup so very deep scratches may not be completely removed. (You
will not be able to feel them, however.) We may have to make an extra charge
for mouthpieces that are very badly worn or damaged or for nickel plated
mouthpieces that require stripping. Our plating is done routinely in one
batch every two weeks. You may call ahead or email us to schedule a drop off,
reducing the time you'll be without your mouthpiece.
- The following pictures are before and after shots of
our mouthpiece plating. One of the mouthpieces is an old Giardinelli flugel
horn mpc (5FL) that was refinished and silver plated. The other is a new
Schilke trumpet mpc (6A4A) that was gold plated.

- Silver plate trumpet or horn mouthpiece, includes
refinishing - $35.00
- Silver plate trombone or tuba mouthpiece, includes
refinishing - $45.00
- Gold plate new trumpet or horn mouthpiece-
$35.00
- Gold plate trumpet or horn mouthpiece, includes
refinishing - $55.00
- Gold plate new trombone or tuba mouthpiece-
$45.00
- Gold plate trombone or tuba mouthpiece, includes
refinishing - $70.00
If you'd like to discuss custom work on your
mouthpieces, you can
email our staff at
sales@osmun.com
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