Close the gates before horsepower is gone
Within months of setting up my dust collector, I started having problems with the plastic blast gates. The corners of the housing that the gates slide into fouled with sawdust, making it impossible to completely shut the gates. Consequently, the collector became less effective because of leaks.
To make these gate housings self-cleaning, I clipped the closed corners, as shown, to give the dust a means of escape. The slight draft through the corner holes when the gate is open doesn't noticeably take away from the collector's power.
-- Val Ingraham, Norcross, Ga.