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Arnold & Sons Thumb Rest Adjustement (it slips)

Posted: Tue Feb 23, 2021 10:16 am
by alberttrombone
Hello everybody,

I'm having problems adjusting this thumb rest.
It slips all the time even when I tight it up with the screwdriver/allen key and doesn't work properly to hold the trombone with my left thumb.

Anyone's had the same problem and know how could I fix it?

Thanks!

Albert

Re: Arnold & Sons Thumb Rest Adjustement (it slips)

Posted: Wed Feb 24, 2021 2:31 pm
by tombone21
This one?

https://www.matthewsmuziek.nl/en/arnold ... mbone.html

Looks like this would benefit from a shim around the bell brace to make it a bit thicker, allowing the clamp to fully tighten. Maybe some paper wrapped around, or a small strip of rubber would be great.

Re: Arnold & Sons Thumb Rest Adjustement (it slips)

Posted: Wed Feb 24, 2021 2:44 pm
by pompatus
tombone21 wrote: Wed Feb 24, 2021 2:31 pm Looks like this would benefit from a shim around the bell brace to make it a bit thicker, allowing the clamp to fully tighten. Maybe some paper wrapped around, or a small strip of rubber would be great.
A small strip of bicycle innertube would probably work wonderfully.

Re: Arnold & Sons Thumb Rest Adjustement (it slips)

Posted: Sat Feb 27, 2021 11:10 am
by alberttrombone
tombone21 wrote: Wed Feb 24, 2021 2:31 pm This one?

https://www.matthewsmuziek.nl/en/arnold ... mbone.html

Looks like this would benefit from a shim around the bell brace to make it a bit thicker, allowing the clamp to fully tighten. Maybe some paper wrapped around, or a small strip of rubber would be great.
Yes, that one. I tried with sticking plaster and it keeps sliping all the time. Is very anoying.