Two-stage Dust Collector for Under $20
This pre-separator picks up most of the chips which would otherwise end up in the collector bag. The advantage is that I can wait much longer before emptying the bag - a disagreeable chore. I bought the metal trash can and two 4" collars from a home improvement store. I then cut two holes in the lid with a rotary cutout tool and installed the collars by bending back the tabs on the inside. To seal them I ran a bead of silicone caulk around each one.
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