I liked the tip about dust attachment to the drill, helping out when drilling holes in the ceiling. That’s the only choice that is a tricky business. If the Cup this trap will be in the form of an inverted cone, with the inevitable rotation and it will work like a centrifuge, throwing all around; tapering to the top to get rid of this disadvantage, but some crumbs will flow past the reduced entrance hole. I propose to merge the advantages of both variants in one design, representing a kind waist-belted cylinder: it will be to catch good, and throw will not. LEBEDEV, Minsk
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