Found this on Youtube
http://www.youtube.com/w...QLRg&feature=relatedThis video was uploaded by steirs12 and he has some videos of it in use as well.
Made out of a plastic bucket with carpets set at angles. Dirt placed at the top via a classifier, water added and flows out of a hole cut in the side at the bottom.
Something interesting I think, for those guys that like building their own gear.