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Forum topic by TDW posted 03-25-2010 04:47 PM 3773 views 0 times favorited 7 replies Add to Favorites Watch
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TDW

26 posts in 1642 days


03-25-2010 04:47 PM

Topic tags/keywords: question downdraft table sawdust

Hello All!
I am in the process of reworking my shop, it is 24X30. Trying to get sawdust under control. I want to build a combination outfeed and downdraft table. I am having trouble on the design. Using a used squirrel cage and planning on a 1” thick top with 1 ” holes spaced 2” apart. What size top will produce enough draft? Any ideas would be appreciated. Right now I am thinking 40” X 50”

-- Tom, Ky., http://tomandmaxinewynn.com


7 replies so far

View Moron's profile

Moron

4666 posts in 2551 days


#1 posted 03-25-2010 05:38 PM

I’ve worked in many a professional shop, seen many a homemade down draft table and with rare exceptions, they did anything but suck dust.

I recently used one that did work but it wasnt cheap to make. 36” x 60”. 1/2” baltic birch top covered in 1/8” rubber, 1/4” conical holes on 1” center to center. Under that was 6” of open space with three firmly fitting furnace type filters and under each filter was an explosion proof motor driving a super sonic squirrel fan. It was also 220 V.

they used the “candle test” to determine when the hole dia., were big enough. I didnt say anything but my guess…..............they could of bought one for less $$$$.

-- "Good artists borrow, great artists steal”…..Picasso

View woodworm's profile

woodworm

14125 posts in 2248 days


#2 posted 03-25-2010 05:52 PM

I agreed with Moron on the “conical holes” or also known “counter sink” holes. They work better than straight holes.

-- masrol, kuala lumpur, MY.

View jevarn71's profile

jevarn71

80 posts in 1818 days


#3 posted 03-25-2010 09:06 PM

I saw this on Sawmill Creek yesterday: http://www.dreamgarage.com/workshops/featured/shop-tyme
Page through the pictures, he has a combo downdraft/outfeed table on his tableasw. It looks like he has it connected to his cyclone dust collection system, but I’m sure it would work modified with squirrel cage fan.

-- Jason - Aim High!!

View snowdog's profile

snowdog

1132 posts in 2640 days


#4 posted 03-25-2010 09:58 PM

Wow, that guys has some shop. http://www.dreamgarage.com/workshops/featured/shop-tyme

-- "so much to learn and so little time"..

View Abbott's profile

Abbott

2570 posts in 1961 days


#5 posted 03-26-2010 05:36 PM

That place is decked out! I even had to click the Tool King ad while I was there, I couldn’t help it.

-- Ohh mann...pancakes and boobies...I'll bet that's what Heaven is like! ♣ ♣ ♣ ♣

View wiswood2's profile

wiswood2

1103 posts in 2354 days


#6 posted 03-26-2010 06:02 PM

I built mine with a 1/4 inch perferated masinaite with a copple of 3/4 inch 1×4 under neath I use it for sanding table It takes a way all the dust from sanding. works great It also takes out dust that gets in the air.
Chuck

-- Chuck, wiswood2 www.wisconsinwoodchuck.com

View SomeClown's profile

SomeClown

63 posts in 1638 days


#7 posted 03-29-2010 09:04 PM

Wow… that shop is off the hook! I’ll get there someday… sigh

:)

-- There are 10 types of people in the world: those who understand binary, and those who don't.

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