I had an extra cedar board left over from maing plant boxes.i figured since cedar wont rot why not make a finish sluice lol! so here it is so far .just getting ready to silicone joints before matting
Beach High Banker, Sweep Jig, Whippet Dry Washer, Lobo ST, 1/2 width 2 tray Gold Cube, numerous pans, rocker box, and home made fluid bed and stream sluices.
Gold is oleophilic (attracted to oil). The effect of oil is that it can attract and float gold out of a sluice or pan (not a good thing) but it is actually used to concentrate and recover it in some flotation circuits used by mining operations. Its not likely that there will be any or enough oils secreted from the cedar to have any effect in your usage. By the way, pretty sluice.