Morris Dovey’s ShopBot Dust Collection

 
The system starts with an inexpensive 2HP dust collector from Harbor Freight Tools. It's connected to the ShopBot through a pair of 55 gallon drums fitted with cyclone separator lids from Lee Valley Tools. Experience has shown that each separator captures about 99% of the dust it receives and that the first separator captures all of the coarse particles - provided that the drums are emptied regularly. So far, there has not been any noticable accumulation of dust in the collector bags; and there may never be a need to empty them.

Cyclone separator lid Dust Collector and cyclone separators Dust Collector

The dust collector shoe moves with the z-carriage. It's suspended by four 1/8" bronze brazing rods and four small turnbuckles from an oaken H-shaped frame bolted to the z-carriage.

Oak suspension frame (front)

Oak suspension frame (front) Oak Suspension frame (back)

The shoe itself is constructed of 1/2" pine boards and 1/4" plywood. The turnbuckles attach to four screw eyes in the top panel of the shoe. There is a removable 1/16" lexan front window with holes drilled to fit over the 3/8" heads of a pair of washer-head screws set into the side boards. At the rear of the top panel there is an elliptical opening over which a 4" hose flange has been fitted; and at the front of the top panel there is a circular opening which exactly fits the spindle's quill. The top of the shoe bears against the bottom of the z-carriage. Note that the bottom of the shoe is coplanar with the bottom of the collet nut.

Back view of shoe Side/back view of shoe

Side view of shoe

Front view of shoe Shoe window

The "shoe box" is glued ("Gorilla Glue") and nailed (18ga pneumatic brads). Here are top and bottom views of a shoe under construction:

Top of shoe Bottom of shoe

Copyright © 2004 Morris R Dovey

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