Okay, after reading this and a few other threads on pin/tumbler brass cleaning, I'm interested... but not to the point of shelling out several hundred bucks for the ready-made setup.
I'm thinking of kluging together a tumbler setup from junk box parts (I have an extensive junk box.

)
Anyone else done this, and did it work for you?
How much pin media would I need for say, a five gallon paint bucket?
Can I use my existing media separator system? (consists of a homemade rotary sieve made from wood and hardware cloth.)
Final question. Can I use this process dry?