LOL. Hope I didn’t sound snarky. Separating 98% of saw dust is reasonably easy; Separating 99+% is hugely challenging. The shape of Dustopper…rounded at upper chamber, inverted frustum, unique separator slot, and more (top secret) are all the result of about 150 design iterations. Yes, it’s patented.
One more word on separation with air flow separators… they behave like paper filters in this regard: The higher the separation efficiency (at a given cut point) the more restrictive the become. Dustopper has been optimized for woodworkers, and does a great job with nearly all dust made in that environment. And, it has great throughput. I have a prototype designed specifically for fines that may end up becoming a dedicated product for abatement of mortar, concrete, silica, and other powdery forms of dust. It’s a bit more restrictive, and probably would not be something to use with a high-output device like a planer. Dustopper handles planers pretty well when used with 120 CFM and larger vacs.