I have a 1 1/2 HP Harbor Freight dust collection with a WYNN air filter in my 450 sq foot garage workshop. The DC is connected to a cheap "cyclone lid" that fits over a standard garbage can.
https://www.amazon.com/WOODRIVER-Tra.../dp/B0035YD23K
From there, 4" flex hose connects to my table saw, jointer and chop saw. I'd like to add my bandsaw, drill press and edge belt sander but not until I improve the suction of the system. This setup doesn't provide enough suction. Most of the wood chips & dust are trapped in the garbage can but quite a bit of wood chips also make their way into the HF bag.
I'm not happy with the performance of this system but not sure how to prioritize my upgrades. I could replace / upgrade the HF Dust Collector, and/or add a cyclone and / or install rigid ductwork. (For space reasons, I think I'm limited to 4" duct.)
Should I expect significant improvement simply by replacing my 4" hose with 4" duct?
Likewise, will I get a significant improvement by replacing the trash can separator with an Oneida Dust Deputy?
Or, is it time to bite the bullet and replace my HF dust collection with something more powerful?
Any input would be appreciated.
ScottC