Down Draft Table

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Project by stevenmadden posted 06-03-2010 08:28 PM 5164 views 8 times favorited 7 comments Add to Favorites Watch

This is a down draft table that I built to help control the dust in my shop. Bottom and sides are made from 3/4” baltic birch plywood, rabbeted sides and on the bottom (over sized for clamping), and held together with screws. The top is 3/4” MDF with 1” holes and rabbeted 1/4” to sit down in the opening. The inside slopes are scrap plywood set at an angle to help increase the “down draft”. Overall dimensions are 32” x 16 3/4” x 6 3/4”.

I am not sure if this is the best design, just something I thought would work. It does a pretty good job, although I am open to suggestions. Let me know if you have a better design or ideas for the hole placement and angle of the inside of the box (the top can be replaced and the inside plywood can be moved around or done over). Thanks for looking.


7 comments so far

View Woodcanuck's profile


128 posts in 3028 days

#1 posted 06-03-2010 08:50 PM

I’m planning on building one of these too. I opted for the Rockler downdraft panels, which are sitting collecting dust (pun intended) on my workbench until I get around to building it.

I was thinking of having the insides like a inverted pyramid, funneling everything down to a hose outlet exiting the bottom center. I built an adjustable shelf into my workbench to allow me to put certain tools in place so that their outfeeds are level with the benchtop and I’ve got a hole for the dust collection hose to come up underneath, so I plan to put this in that spot when I use it allowing me to vent it out the bottom.

I haven’t tried out the Rockler panels yet, but I liked a few things about them:
- you have 4 in a table, which allows you to swap them out for solid panels if you’re working on smaller pieces or want higher suction (ya ya, I could do this with MDF too…)
- the panels have rubber grommets in the holes, giving it grip on the workpiece
- there are also stop blocks, essentially bench dogs, that come with it for stability of the workpiece

When I get around to building it I’ll post it and let you know if the pyramid idea works…or if I got too confounded by the compound angles and gave up! :-)

-- Ian - Life's a game, if you don't play, you can't win.

View Paul2274's profile


330 posts in 3139 days

#2 posted 06-03-2010 09:05 PM

Nice design Steve.

View a1Jim's profile


117126 posts in 3604 days

#3 posted 06-03-2010 09:23 PM

Looks good I say any size and design that works for whatever project your working on is the best to use. as long as it works.

-- wood crafting & woodworking classes

View levan's profile


472 posts in 3007 days

#4 posted 06-03-2010 09:29 PM

looks good Steve. The one I made was some Larger and I found it helped to cover some of the holes when sanding small parts. Seemed like it increased velocity. Good job.

-- "If you think you can do a thing or think you can't do a thing, you're right". Henry Ford

View JJohnston's profile


1622 posts in 3318 days

#5 posted 06-03-2010 09:43 PM

Pyramid compound angle calculator

-- "A man may conduct himself well in both adversity and good fortune, but if you want to test his character, give him power." - Abraham Lincoln

View mafe's profile


11730 posts in 3116 days

#6 posted 06-03-2010 10:03 PM

Really cool.

-- MAD F, the fanatical rhykenologist and vintage architect. Democraticwoodworking.

View Woodcanuck's profile


128 posts in 3028 days

#7 posted 06-03-2010 11:19 PM

That compound angle site is pretty cool….basically does what I need! Thanks for the link!

-- Ian - Life's a game, if you don't play, you can't win.

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