The subject of dust collection is very complicated. I went the easy route as I only need to collect from a table saw, mitre saw, planer, spindle sander, and maybe my CNC router. And none at the same time. I had a 3/4 hp Delta unit on a 4" inlet Oneida Dust Deputy. It simply wasn't powerful enough to run through ducting hence the upgrade.
All of the home shop collectors are pretty much the same; single stage with either a cloth or felt bag or a pleated filter. I highly recommend a 1 micron filter which can be easily added.
The
new Oneida cyclone that I bought has a 6" opening at the top and a 5" inlet on the side. The Magnum collector has a 6" inlet and it dropped right into the top of the cyclone. I used 5" HVAC fittings to connect everything together. I cut disc from 3/4" ply to fit into the top of the filter and it's held in place by friction and the band clamp.
To clean thew filter I undo the band clamp and drop the filter.
When I eventually get the thing in its permanent location I might reuse this part of the collector that holds the bag and filter.
I may put the filter on top and adapt a 5 gallon bucket to the bottom so any dust that reaches the filter is easy to remove.
Like this:
The problem is the filter is only 14" in diameter and the ring thing is 19" in diameter so takes up a huge space. It would be easy to whip up a 6" tall x 14" square box like this: