shaft extender

[JAZZ2250]

I'm thinking to put volume pots and rotary selector close to the rear panel of my preamp. I've read that I can use a shaft extender made of either a rod, stainless steel tubing or plastic tubing. But, the problem is the front panel where I will install the knob. How can I mount the extender at the front panel "tightly but rotating freely"? Any thoughts on this?

 

[UrSv]

There is also a special sleeve bearing mounting accessory that lets you run the extension through the panel with no rattle and good feel.

Like this (AZ30):
http://www.schuro.de/Downloads/PDF-Preislisten/Mechanik/Achsverb_I_BR.PDF

 

[mrfeedback]

A rubber grommet through the front panel is cheap and easily available.

Eric.

 

[JAZZ2250]

Thanks so much for the answer.
Anybody knows a US source for this type of parts?

 

[Peter Daniel]

A rubber grommet through the front panel is cheap and easily available.

Eric.

Or plastic washer with 0.25" inside diameter from Home Depot.