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Getting my tools ready #25: Shop Made 2'x4' Down Draft Table

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Blog entry by DocSavage45 posted 05-01-2016 07:47 PM 1321 reads 3 times favorited 24 comments Add to Favorites Watch
« Part 24: CHARLES NEIL BANDSAW RESAWING JIG II FOR RESAWING OR SLICING VENEER ON THE SMALL BANDSAW Part 25 of Getting my tools ready series no next part

DOWNDRAFT TABLE BUILD – 2016

This is a project I needed to do to work on my boxes. I’m sharing details for LJ’s who might want to build their own if they haven’t already.

Minnesota winter means enclosed shop. Dust! I needed a table that would fill a number of functions for me. I wanted a large enough space to sand furniture parts as well as making boxes. I’m providing this blog for those of you who want to make a slightly larger down draft table/box. I have a 1 1/2 hp delta dust collector with 4 inch flex tubing running from my Garden shed into my shop. The 4 inch tubing and corrugated flex hose reduces the air flow. I also built a 50 gallon Thein chip collector and that all reduces the suction. I found a way around it for now while making boxes. I use plywood to cover half of the top increasing the suction.

I added 3/4 holes to the pegboard to increase the air flow. A Stympy Nubbs idea when he wasn’t using Rockler parts. He built both types and you can check him out. Otherwise I have laid out my steps using my “some day I’m gonna use this” materials.

Kiefer posted a hood to go over his down draft table which I will aapt later when I have to close the shop again to Minnesota winter and kick up the heat and dust! LOL!

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I drilled 140 three-quarter inch holes into a 2’ x 4’ pegboard. These were drilled with a three-quarter inch hole saw. Due to its coarseness in cutting and the softness of the pegboard there was some tear out on the backside.

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After I treated the pegboard with a coat of Seal Coat. I proceeded to use my oscillating sander I proceeded to sand down the tear out on the back of the pegboard.

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Assembled the frame from materials that I culled from the construction materials in my shop that were not cupped, warped, twisted. I used a lap joint with glue and pin nailer. I haven’t made any corner braces so I used square 2×4 blocking for clamping and holding the frame square.

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I had cut dado slots to the width/thickness of the pegboard. And I had to trim the pegboard that the slots.

The bottom of the 2×4’ box has a half inch rabbit joint to accommodate a half-inch thick 2×4’ piece of MDF. The rubber mallet that’s a persuader.

Again, I used available materials from my shop to make a V-shaped vortex. This table is designed by available materials versus a materials list to the design of table. The rails are glued and screwed. But tacked first with a pin nailer.

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This is is a set of rails notched into the frame to support the thin pegboard as the dado grooves were not sufficient.

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I was able to purchase an inexpensive 4 inch exhaust port for about four bucks on Amazon. The holes were cut with a hole saw slightly smaller in the center approximately 3 1/2 inches high and two side holes with another hole saw approximately three-quarter inches in diameter. This provided enough air volume to meet the dimensions of the exhaust port.

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I painted the pegboard with an exterior grade tinted primer which I had in my shop and added some resistance from the top. The pictures show the pegboard slide in over the rails noted above.

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mixing my own wood filler from yellow, glue and the sawdust from the wood to fix the punky holes in the front of the table before painting.

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Painted the complete frame/box with exterior grade white ceiling primer.

: Assembled/painted components of the downdraft table.

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Attached the exhaust port and sealed with caulking.

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Purchased some three-quarter inch rubber square feet at a good price from Amazon.com that I attached with three-quarter inch wood screws.

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Did a test run with a porous rubber sanding mat purchased from Amazon which sits perfectly on top of my woodworkers bench. It works! LOL!

As always comments and suggestions are welcome and thanks for checking it out!

-- Cau Haus Designs, Thomas J. Tieffenbacher



24 comments so far

View CharlieK's profile

CharlieK

467 posts in 3258 days


#1 posted 05-01-2016 08:07 PM

That’s a whole lotta hole drilling! How well does it collect and reduce dust?

-- Adjustable Height Workbench Plans http://www.Jack-Bench.com

View a1Jim's profile

a1Jim

115202 posts in 3042 days


#2 posted 05-01-2016 08:12 PM

Good work Tom very cool design and super build.

-- http://artisticwoodstudio.com Custom furniture

View DocSavage45's profile (online now)

DocSavage45

7704 posts in 2307 days


#3 posted 05-01-2016 08:13 PM

Charlie!

Resting up from the work you di with Northern Woods? Nice job sir!

I get more suction with the plywood added to the top when working on a smaller project like a box. It’s pretty good and I hope to improve the vacuum in my dust collection by adding some plastic pipe when finances allow.

-- Cau Haus Designs, Thomas J. Tieffenbacher

View DocSavage45's profile (online now)

DocSavage45

7704 posts in 2307 days


#4 posted 05-01-2016 08:15 PM

Thanks Jim,

Haven’t seen you posting in awhile? But I am doing more now and on computer less.

-- Cau Haus Designs, Thomas J. Tieffenbacher

View USAwoodArt's profile

USAwoodArt

243 posts in 407 days


#5 posted 05-01-2016 08:35 PM

Tom…that is one large downdraft table and a very nice one at that…! It takes a lot air suction to grab all that dust.
I had to re do my top and make it in 2 sections…that allowed me to use combinations that either had holes or a solid top. Let the sanding begin…!

-- Wood for projects is like a good Fart..."better when you cut it yourself"

View DocSavage45's profile (online now)

DocSavage45

7704 posts in 2307 days


#6 posted 05-01-2016 08:40 PM

Greg,

Hope all went well at the jazz festival. I can sand outside now. I enjoy being outside. In the winter I can continue on. Kiefer’s shroud can improve the dust gathering. But you know about that stuff. LOL!

-- Cau Haus Designs, Thomas J. Tieffenbacher

View  woodshaver (Tony)  's profile

woodshaver (Tony)

4018 posts in 2818 days


#7 posted 05-01-2016 08:49 PM

Great info on your blog Tom. Most of my projects are of the “smaller kind” so I just may make my down draft table a bit smaller to help save some valuable space in my almost 2 car garage/shop!
Thanks Tom!

-- Tony C UAW, St Augustine FL, My high school shop teacher said "You can do it"... Now I can't stop!

View DocSavage45's profile (online now)

DocSavage45

7704 posts in 2307 days


#8 posted 05-01-2016 08:59 PM

Tony,

I don’t really have as much shop floor space as I need.But I had to build this for more than one function.

Post yours when you’re done!

-- Cau Haus Designs, Thomas J. Tieffenbacher

View GreaseMonkey2275's profile

GreaseMonkey2275

77 posts in 618 days


#9 posted 05-01-2016 09:34 PM

Nice job! I think I will have to do something similar when I build my down draft sanding table.

-- Jake

View DocSavage45's profile (online now)

DocSavage45

7704 posts in 2307 days


#10 posted 05-01-2016 09:40 PM

Jake,

Thanks!

-- Cau Haus Designs, Thomas J. Tieffenbacher

View PhilBello's profile

PhilBello

390 posts in 1432 days


#11 posted 05-01-2016 10:13 PM

That’s a great looking table Tom… like you say no excuses come winter! You can’t find anything in my shop at the moment for sawdust…lol

-- If you want the rainbow, you got to put up with the rain - Steven Wright

View poospleasures's profile

poospleasures

544 posts in 1949 days


#12 posted 05-01-2016 11:11 PM

Good build Doc. Yours is a lot prettier than mine. Hope it works for you this winter. I made mine much smaller as I don,t build furniture anymore, just boxes and bowls. I can not see the dust going into the holes but I also do not see it floating in the shop either. I also hook to a 4” drop form a cyclone w/6” line runs. A question, I sometimes get a whistle sound from the air going thru the holes, do you?

-- I,ve had amnesia for as long as I can remember. Vernon

View DocSavage45's profile (online now)

DocSavage45

7704 posts in 2307 days


#13 posted 05-01-2016 11:11 PM

Phil,

Thanks for checking in. Hey how’s the dinning set coming?

-- Cau Haus Designs, Thomas J. Tieffenbacher

View DocSavage45's profile (online now)

DocSavage45

7704 posts in 2307 days


#14 posted 05-01-2016 11:15 PM

poospleasure,

I’m thinking good suction through small holes? Like whistling. larger holes probably prevents that.

Thanks!

-- Cau Haus Designs, Thomas J. Tieffenbacher

View doubleDD's profile (online now)

doubleDD

5237 posts in 1508 days


#15 posted 05-01-2016 11:20 PM

Good blog Tom. I will use this info for when I get around building mine. It’s that space thing that keeps me from doing it.

-- Dave, Downers Grove, Il. -------- When you run out of ideas, start building your dreams.

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