Like a lot of dust collectors, mine can’t keep up with the large volume of fine debris produced by a drum sander.

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Like a lot of dust collectors, mine can't keep up with the large volume of fine debris produced by a drum sander. So boards emerge from the sander covered with dust. To get that dust off, I drilled a series of small holes in a copper pipe, connected that to my compressed air line, and mounted the capped pipe on the outfeed end of the sander. I also use it as a handheld wand. Now boards come out nice and clean.

One caution: blowing dust off the boards puts lots of fine particulates into the air, so wear a respirator. It also helps to keep a stream of fresh air coming into the shop. Run air-filtration units if possible.
—Peter Kasper, Carlisle, Iowa