Thanks Greg. I was checking there site the last month or so and they never had it up yet. The gold cube topper looks simple but effective. I'm a little confused at the 3/16" holes in the screen. I thought everything had to be screened to 1/8" for the cube.
They are allowing the 3/16" for two reasons:
a) faster classification of material.
b) two drop riffles are supposed to catch any gold larger then 1/8".
So if you don't want to pay $275 for the Topper, then make your own! I am pretty sure that tray is from casluicebox.com!
It is the A-52 high banker hopper box.
$42 US plus shipping.
If you wanted more drop riffles, wider and longer area to do the work... I highly recommend the top tray to the G2!
(G2 is 12" wide, A-52 hopper is 10" wide)
Rick will sell you the thin 'econo' version (thickness of topper) for around $50 and the much thicker plastic G2 version for around $100.(right-click and open in new tab for best viewing)
If running fine river gold you will want to classify smaller then 1/8" or otherwise a lot of the 'fly poop' sized gold can get displaced by the 1/8" material. So runninng 5/32" or even 3/16" seems like a bad idea to me...
I can quickly classify down to 1/8" extremely fast with my casluicebox.com hand trommel 1/4" wrapped in 1/8" hardware cloth. I can run this directly into the cube, but I prefer to run it into the G2 bottom sluice first just to chute it over out of the way...
You can get the hand trommel for just a little more then the 'Topper' - I had to take a heat gun and mold the hopper flange down to a tighter tolerance and has been the only issue so far.
Best thing is I can re-run the tailings with a bucket placed at the end for really stubborn clay areas the 'Topper' would choke on...
[ Invalid Attachment ] (right-click and open in new tab for best viewing)
Or if the hand trommel is too much then build Mike's DIY hand trommel.
I would use 1/2" or 1/4" for strength the wrap that with 1/8" hardware cloth.
I would use the green camo Home depot buckets though
They actually have these foam handles that are the best I have ever used....
My 2 bits...