The saw is designed so that the large plastic chamber behind the blade guard catches the larger particles of dust. You can see this dust swirl in the chamber as you cut. There is a second chamber behind the motor that houses a filter, which catches the smaller dust particles; Roan says that the “patented cyclonic action filters particles down to 2 microns”. The filter is intended to last the life of the saw if properly cleaned and maintained.
Tool Test: The Roan Dust-Collecting Saw
