This is my design of a Cyclone Separator used to separate dust and other particles from a small CNC machine. I use a 775 DC-motor connected using a relay to the CNC-tool, when the tool starts spinning so does the separator.
The added filter holder uses a carbon filter and only needed if there is very small dust particles. It does restrict flow so use only when needed.
I've used the Customizable Centrifugal Fan Generator by Z80nm on top of the separator but modified it a bit.
There's two variants of nuts, one with 0.1 and the other with 0.20 mm clearance.
NOTE: The fan design can't handle high speeds. I am working on a re-design.