After a couple months of research, building, and testing a vacuum table (whose purpose is light production work of cutting MDF and Aluminum panels). I have ironed out most of the details and can produce work consistently. The pump being used is a two stage rotary vane pump. The build quality is poor, and yesterday it started leaking and pumping oil vapor into the air.
So I am looking for a replacement that can run continuously and pull at least 20Hg. What are people using on their tabletop CNC’s? Regenerative blowers? Rotary vane?