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Message: <blockquote data-quote="Chrisco" data-source="post: 366230" data-attributes="member: 6150">Gday,I built one last year and used it in central Vic. I just made it a metre long with three inch high riffles in the sluice box and two angled removable slides with a riffle each under the hopper. I made it all out of timber and used no matting or carpet, just the timber bottom. When set up right you will not find any gold in the bottom riffle coz the four further up will catch it all. I found gold from small nuggets (.5-1g) to flour gold size and it had no trouble catching them, usually in the first 2-3 riffles.When in clay ground you will need to puddle the dirt to break it up. Clay holds gold so every skerrick must be broken up in the puddler. If little balls of clay pass through the box they are washed through so you will lose any gold that may be in them and it will also pick up gold as it rolls through, this goes for any process you use including the dish.I found it processed dirt very quick and you don't need pumps, just a puddle and a dipper. The beautiful thing is they don't need much water to work and are second to none for catching all gold. If your finding gold in that last riffle your losing gold so set it up so there is no gold being caught in the last riffle. Chriso</blockquote>