Author Topic: Noisy CX-12 button  (Read 899 times)

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Offline Gnarly He Man

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Noisy CX-12 button
« on: January 18, 2023, 11:14:53 AM »
https://forums.SlideMeister.com/index.php?topic=15160.0
I tried the peening on a CX-12 Jazz which I have retuned to “Alto bebop” tuning (starts on E3, Bb given on “blow 4” instead of a C note).
Solved my problem! The slide is much quieter, a little bit of drag, but not unpleasant.

Offline Grizzly

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Re: Noisy CX-12 button
« Reply #1 on: January 18, 2023, 01:15:31 PM »
Joey mentioned the possibility of the bumps "sawing" the channel. I'd recommended smoothing them with sandpaper to avoid that possibility. Thanks for including the original posts from 2017.

Tom
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Offline streetlegal

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Re: Noisy CX-12 button
« Reply #2 on: January 22, 2023, 09:09:05 AM »
Just an add on - the method I have used to quieten down the chatter on CX12 slides is to apply a little vaseline, just along the top and bottom edges of the slide, where they run in the slot, so the vaseline stays there. This works well enough for me.

Offline Grizzly

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Re: Noisy CX-12 button
« Reply #3 on: January 22, 2023, 03:57:38 PM »
Just an add on - the method I have used to quieten down the chatter on CX12 slides is to apply a little vaseline, just along the top and bottom edges of the slide, where they run in the slot, so the vaseline stays there. This works well enough for me.
I heard of that years ago; may have to try it! ;D

Tom
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Offline blowharp

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Re: Noisy CX-12 button
« Reply #4 on: February 02, 2023, 10:14:41 AM »
Despite being a professional metal finisher for 45 years I tended to think like a harmonica player when it came to our instruments. It's only been the past 2 years that I started to think more like a metal finisher when working on harps. That means not using goo's, goops, globs and goblins to fill voids to fix things. Peening the slide is a short term fix, and can ruins the harp in the process. A couple fixes that are easy to do is check the spring. Does it droop? IF it droops it means you have been re inserting the slide wrong and causing undo wear in the channel. See if you can roll the spring in its holder to make it stand straight out and not droop down or jet skyward.

 Next, it is ok to flat sand the comb face on a CX-12. This will remove the high and low spots created through wear.  You can de bur the slide by using fine grit sandpaper to remove any pieces of metal left behind from stamping out the holes in the slide.  I use a 220 or 330 grit sanding sponge to roll the edge of the slide. The slide is placed in a bench vise that I glued craft foam paper to, to protect the mouthpiece parts when sanding.

If you have the patience to take the time it's easy to improve your harps with a few non evasive or damaging steps.

Mike
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Offline Grizzly

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Re: Noisy CX-12 button
« Reply #5 on: February 02, 2023, 11:52:12 AM »
Sanding the face of the CX 12 comb, which mates with the channel inside the casing, will not affect the dimensions of the channel itself. The back spring pushes the comb into the mating surface of the casing. So flattening the front of the comb will enhance smoothness without any damage to the channel.

Tom
working on my second 10,000!