Some time ago, I was working in the shop completely oblivious to what Mimi was doing. After a few hours, I emerged from the basement to see “that look”. What!- I said. To which she replied- “look at all this dust, I just finished cleaning!”
Well, I was lucky enough to get a great score on a Delta dust collection system, off of Craig’s List, and that has helped with the stationary power tools. Sanding dust, however, has been more elusive.
Looking over the Grizzly site, I came across some down draft devices. Now, my shop has no more room for any other shelf, cabinet, box or cart. So my attention was directed to the table top version of the down draft dust collector- until I saw the price- Holy Moly $165!! To paraphrase a line out of one of my favorite movies- Used Cars- “That’s too frigging high!” Luckily the site showed an “inside” view so this is my take on their down draft device.
All of the parts cut and ready to assemble. The completed unit measured about 23” x 27”. It’s an odd size because I started with the peg board I had and engineered backwards.
The bottom slants towards the center, to aid with dust collection. This is the center “rail” that accepts the two bottom pieces
The side meets the end with a rabbet. The sides and ends are rabbeted to accept the peg board top. A dado is used to accept the bottom pieces.
The unit is assembled with dry wall screws and silicon caulk to create an air tight seal
Baffles installed using wood glue, dry wall screws and brads (on the bottom)
Closer view of the baffles. These will help direct dust/air as well as support the peg board top.
Peg board installed and dust collection port in place. The scrap piece of peg board wasn’t large enough to cover completely so there is a seam in the middle. The seam straddles the baffles, it has good support. Also, the baffles were spaced to be located in such a manner as not to block any holes. This was previously used peg board- as can be seen by the minor defect near the center. The peg board is fastened with a few counter sunk finishing nails.
Bottom view. Shows the slopping bottom panels.
The only thing I need to do, yet, is find some of the rubber shelving liners- the kind that looks like expanded metal screen- to cover the top. I think this will reduce the slipping while not blocking the air flow.
I connect this to my large dust collector thru a 2 1/2” hose into a larger 4” hose. There is enough suction to hold a piece of notebook paper in place even when turned upside down.
Thanks for looking,
-- Lew- Time traveler. Purveyor of the Universe's finest custom rolling pins.