Yeah, I think you're right Lee,
Simple Centrifuge is running much lower, though, I think 1700 rpm? not sure.
it's just a matter of
more rpm=higher "G's"= faster seperation, for a given diameter. Above a certain threshold, of course.
The way I see it, is, Simple Centrifuge has a good design, and plan. It spins, you feed liquid in at a certain rate, it spins out 'clean' fluid. You shut down from time to time to check the "goo", and, clean it out. I don't think it's a fill, spin, clean, re-fill thing. I like the idea of it feeding all the time. They claim quite a few gallons per day.
Maybe I miss read it, though.
I like BoT's pressure cooker idea....you do need a lid for running......and, an aluminum pressure cooker pot would make a nice vessel, drill a hole in the bottom for the clean product, then, all you have to make is the spinning bowl part........