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181 Posts
Yea, and that's a real issue. I am blessed with an old Sheldon metal lathe from 40+ yrs. ago that I use to bore a 2" sch.40 coupling on one end to fit the male end of my 2-1/2" vac. hose. Rockler, Woodcraft, ptreeusa, or one of the others might sell such a coupling. Rockler sells a 4" hose swivel, maybe they have a 2-1/2". A pool vac has a 1-1/2" ball swivel.My New Wave Shark RS 1000pro has a 2 1/4" dust port on top of the fence that moves about 12". I can hook up the shop vac to it no problem but I want to setup our DC to take care of the job. I can bring 2" Schedule 40 up thru the tabletop and need ideas on the hose and or some sort of sliding fittings to allow for the movement.
One think that is a real shame is that DC and shop vacuums don't use STANDARD pipe fitting sizes for the hoses and inlets!!!!!
One thing I learned from Stumpy Nubs is that a D/C moves a lot of air at a low vacuum and velocity (about 45 MPH). He noted that that's not real effective at sucking up fast moving chips coming off a router bit on top the table, although those that fall into the box below are better moved by your D/C. He said those on top of a table (and I would suppose that includes a CNC) are better extracted with a shop vac, because the air is moving much faster. You can't compare power consumption because the dust collector use depends on how much air you allow it move while a vac is almost always full power.