I have used this kind of machine and they work awesome, way better than messy bubble bags, and the kief is ready to smoke, press, whatever, cuz its dry when done.
I think he has one for sale in craigslist denver, check it,
I would have to take it apart to figure out excatly how to do it, but proabablly make the frame out of metal., then put that inside a plastic container. Then get a garage freezer, the lay down type with the lid on top, to house the entire thing so its as cold as possible for the tumble.
I think I can source the medical grade mesh here...