This is a great idea Windy! Does it work well on nickel plating?

In terms of mouthpieces, the Geo M Bundy 3 can be found for about $20 or less, and it's GOLD. Most people won't really need anything better unless they're going pro.

Oh yeah, I took the suggestion of putting some pipe cleaners through and bending them over.  I'll nip off one end and pull it through to try to minimize any media getting in to the tubes. Better than nothing I guess.  I do have an ultrasonic cleaner I use for watch parts if there's stubborn rouge residue that's left.  I'm hoping the walnut shell granules can mostly be kept out by the pipe cleaners.  The keys are off a very neglected, dirty and beat up late 40s Buffet Crampon.

I'm running the first set of keys through my 5lb vibratory tumbler, a Raytech TV-5.  This smaller size tends to find the keys a little tangled up in a wad sometimes because there isn't as much room in the bowl, but so far the results look good after about 9 hours.  The rouge walnut media says 5-15 hrs, so I'm going to check at 12 to see how they look.  I did have a flat spring screw come loose, so I'll sift the media to try to find it when they're done.  So far, so good though!  I may try to do upper/ lower separately next time.

Well I just dropped it down to $1800 on Feebay. Maybe I should put the price back up. Yrs it's in mint condition except I think the pads need redoing.