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Proven Shelf.
Which one

Questions with a right answer.

Most of what decides a shop or theater purchase is not which brand. It is what fits, what the circuit carries, what the port moves. These pages work the constraints in the order they actually narrow, and name the machine last.

Dust Collectors and Cyclones · 5 constraints

Dust collector size: the duct decides, not the motor

Size the duct before the machine. At the pressure a small shop blower makes, a 4 inch line carries about 350 CFM and a 6 inch line about 785 CFM, while the fine dust figure is near 1000 CFM. No normal blower delivers that volume and the air speed that keeps the duct clear at the same time, on any pipe size, so serious fine dust collection becomes a question about the impeller and the motor together rather than the horsepower the machine is sold on.