I ducted my dust collector out side and put the motor and impeller on a cyclone, the exhaust is diagonally opposite to the shed door and down wind. There are six inlets with blast gate around the shed three are permanently connected to machines.
As the switch for the DC is out I got a remote for this.
I have a mini cyclone connected to my vacuum which I am slowly getting hoses that fit my all power tools, why don't they standardise the dust outlets on power tools.:nonono::nonono:
For the real fine dust I bought a air filter which I added a bracket to take a filter from the air intakes at work.
This gives me a pre-pre filter
To get new pre filter and filter is about 5500km round trip.
I've got a dustpan and brush collecting cobwebs in the corner somewhere.