I have a couple of vibratory tumblers, one is a big home built one,
and the other is a Raytech Tumble Vibe 10. Both of those machines I
use 3/8" plastic cone type media with a FLOW THRU type rinse that
moves water and special tumbling soap.

Now I bought the smaller Tumble Vibe 5, and I need to run some zinc
die cast parts in it. The media I need to use is grit type marked 220/
F. I had it left over from some grits and pre-polishes I had bought
long ago for use with a table top Lortone rotary tumbler.

So with this system, I am not going to have a flow thru system, so I
need some suggestions for how much water and if I should put some soap
in there too? How long do I leave it in there, etc. I remember
shredding Ivory soap for use in the rotary tumbler, so I guess I will
try that again with the vibe tub?

Thanks for all who post useful and positive ideas!