Paratrooper
User
A Mature Breeder Earthworm
| Posts: 77 |   |
|
Re:worm castings purity - 2008/02/20 17:16
Without getting bogged down in the how and why most prospectors use screens to classify dirt before panning . Any prospecting supply store can sell you screened pans that are convenient to use . They are like gold panning pans but the bottom is screen and the sides are straight . . The final one I use for castings is 1/16th inch squares .I do plan to make a screen tumbler like you would see when tickets are tumbled for a drawing . I think if I take some 1X12 boards and cut circles I will have 3 round pieces (1 X 11 or so). I will cut the inside out of one of them . I will use the solid round pieces for ends and the "circle" for support in the middle . Put screening around and make a door , drill a hole at each end for , let's say a length of rebar . I can then make a support for each end .(nothing fancy) . Put it over a tub and turn it while hanging out OR hook up a small motor with a belt to a pulley . A small variable speed drill comes to mind . Some ball bearings will bust up clumps of casting . Not sure of the size of the ball bearings yet .An old windshield wiper motor hooked up to a 12V battery will do nicely also . If you can find an old headlight switch that also dims the dash lights you can hook it up inline to control speed .
If you use plywood you can make bigger circles thereby increasing your potential amount to be processed .
Tom
Kingman Arizona |
New Forum Topics 
