Along the leading edges of the remaining upper length of pipe attach (self tappers) 10mm angle, easily made out of narrow strips of aluminium. Cut lengths of the square rubber so that they fit tightly in place up against these angles.

Fabricate a small hopper/ chute and fix to upper section of sluice.

Mount the sluice in a simple frame so the angle is 21degrees from horizontal.(The photo below includes a small hand operated conveyor, this is not really necessary, it was an "add on" by my mate Neil.)

Use two plastic toy boxes approximately 400mm X 600mm (K-MART) Position these end to end on the ground with one approx 100mm lower than the other. Cut a hole in the upper one and silastic a section of 25mm polypipe so the end extends over the lower box, to act as an overflow.

Position your sluice so the lower end is above the upper box.

Using a 12 volt bilge pump place it in the lower box and run the plastic discharge pipe up to the upper end of the sluice (you will need a valve here to control flow of water) Fill the boxes with water and you have your sluice ready for action.

Well �almost�, from your local supermarket purchase a small bottle of rinse aid and add this to the water. This prevents your fine gold from floating away. You�re probably thinking? �One of our heaviest metals floating away?????� Believe me GOLD will float away!

Interesting fact here is the rinse aid removes the skin on the water and if a bee or wasp lands on the water it immediately sinks with no film to support them.

Hook up a battery to the bilge pump and adjust water flow so there is a steady stream of water flushing over the riffles, begin pouring the fines you brought back from your day of dry blowing into the hopper. When this is complete and the water has drained away, carefully remove the top riffles and see if your efforts have been worthwhile.