Grounding 101: route a solid BARE ground wire, 12 gauge is usually sufficient for small shops, INSIDE the dust collection hose, duct, raceway, etc and bond to a metal portion of each machine. You will want to make splices outside of the duct otherwise it will cause a clog later. route around any blast gates.
route ground wire back to ground rod.
That is the simplest fix to mitigate static. will cost you an afternoon and usually less than 150-200 bucks.