Now we’re talking !! Last night I found a site explaining the construction and principles behind this zigzag sorter.
"Using the schematics given on the Real Seeds website we built a 3D model of the seed cleaner in SketchUp. This allowed us to get a better “look” at the machine from all angles before building it. It also helped us better understand how it will come together during fabrication. Further. It allowed us to easily scale to model size up or down, which is exactly what we did.
Once the design was complete we increased the size by 25%, while heeding the warning from the Real Seeds website – that doubling the machine in size requires 4 times the suction power."
Bingo! 
They claim it takes 20hrs to build one, we’ll see about that lol
I’ve seen ready to ship sorters, identical to the plans, selling for 1 to 2.5k. Tha Fook.
Oh and I found this. Thought it was clever. And much simpler
Now the only problem is I don’t have a 1000+ of the same strain to test the contraption. Well I do have one but no way in hell I’m testing with that one lol
Some I have 100-500… ill just mix with saw dust and rice or whatever haha
I’ll try to build a 12" X 16" one