Toller wrote:
As the article points out, the heavy stuff never makes it up to the air
cleaner.
Yet my filters get plenty dirty. They must be filtering something out, and
since only the light stuff goes up, it must be the light stuff! I am
satisfied.

Your unit is about 7 to 10 feet above the ground and your nose is about
5 to 6 feet above the ground, so you get all dust in the nose first and
the unit get the rest, so wear a mask while sanding or sawing.
Maxen