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Filing mute cork



 
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scott@95603
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PostPosted: Wed Sep 29, 2021 9:57 am    Post subject: Filing mute cork Reply with quote

Is there a proper way of filing/shaping the cork of new mutes? Obviously the cork is filed in an effort to make the mute fit the horn, but should the cork be filed with a slight taper toward the bell, or should the cork be filed evenly across the cork surface? What are the indications that a mute fits properly. Yes, so it won't fall out, but are there other indicators? I suppose filing the cork so much that the sound is closed off is a concern. Scott
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Divitt Trumpets
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PostPosted: Wed Sep 29, 2021 10:18 am    Post subject: Reply with quote

I file (belt sander, not file) the cork to run parallel with the taper of the mute.

Check the mute so all the notes speak from low F# and up. Low F# is commonly bad on mutes that aren't tuned to the instrument it is used on.
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zaferis
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PostPosted: Thu Sep 30, 2021 4:36 am    Post subject: Reply with quote

Parallel to the mute, keeping the shape of the original cork.
I avoid power tools, as they work too fast, making it easy to go too far.

I use emory boards, filing along the length of the cork being careful not to hit the mute body (you can cover the mute body with masking tape for a little protection while filing).
Then when I get to the desired size, I round off the edges of the cork with the finer side of the file. I think it helps keep the cork from having chunks break off.
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superviking805
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PostPosted: Thu Sep 30, 2021 7:34 am    Post subject: Reply with quote

The mute should go into your horn about 3 ½ to 3 ¾ inches. That can vary a little bit, but if the mute goes too far into the bell of your horn it will cause the pitch to begin going flat.
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scott@95603
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PostPosted: Thu Sep 30, 2021 10:39 am    Post subject: Reply with quote

Thank you to all for the information. Very helpful! Scott
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