Sluice design Options

[Davem]

I want to build a sluice box from wood materials. I read one book that used 1 1/2 high riffles (1x2) set 1 1/2" apart. BUT I see all these designs on the internet or commercially made styles where the riffles are set maybe 6" apart. If the wider riffle spacing because expanded metal and carpet is used? I'm not sure what size riffles to use and how far aprt to set them? Thanks for any help.

[traddoerr]

Davem, if your going to build one that you can remove the riffles then I would use miners moss W/expanded metal on top, it isn't that expensive and it will catch a great deal of the really fine gold. Not sure about the logistics of spacing the riffles at 5"/6" or 2", maybe someone else can answer that one.

Thats the one thing about prospecting or just playing, you get to experiment with things, everyone is always trying to build a better mouse trap sort of speak, thats why there is so many different types of sluice boxs out there.

The drop riffle one I explained above is the easiest and cheapest route, and clean up is easier to because you don't take it apart to clean the consentraits out. I didn't mention though, on the slat riffles I used the plastic trim that has round edge on one side and a flat on the other, looks like a standard door trim only smaller.