TS outfeed table with downdraft #3: perimeter fence detailed

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Blog entry by Mainiac Matt posted 05-21-2013 01:21 PM 1432 reads 0 times favorited 3 comments Add to Favorites Watch
« Part 2: cut the parts today... Part 3 of TS outfeed table with downdraft series Part 4: First assembly glue up is done »

Bill Pentz makes a strong case for the need of a perimeter fence, to constrain the “cloud” of dusty air with in the “suck zone” (my terminology) of the down draft table. So I wanted to incorporate one into my design.

But since I’m using the surface primarily as an out-feed table, the fence needs to be either removable or better yet, needs to fold up out of the way.

So I’ve laid out the design with the end walls hinged to the longer back wall, and the back wall hinged to the back side of the table, such that it all folds up and swings down out of the way.

I modeled it with an accurate strap hinge model, so I know it will work. But the hinge model was longer than I needed and crashed when I tried to trim the hinges to length to illustrate it perfectly.

Here’s the model shown without the hinges.

-- Matt -- I yam what I yam and that's all what I yam

3 comments so far

View Paul Stoops's profile

Paul Stoops

354 posts in 3038 days

#1 posted 05-21-2013 08:12 PM

Lookin’ good! That looks like a good idea.

I did something similar when I added an extension table to my Ridgid R4511. I haven’t had an opportunity to try it out yet, but it seemed to pull sufficient air through the perforated top when I had it hooked up to my DC. My version can be found here:

Will you be able to actually measure airflow when you get it completed? I haven’t measured mine, but I should just for curiosity. However, the airflow will change with the size of the part blocking some of the holes. I plan to use a piece of perforated plastic drawer liner to keep the parts from slipping around.

-- Paul, Auburn, WA

View DIYaholic's profile


19848 posts in 3152 days

#2 posted 05-21-2013 11:39 PM

That looks like it will suck….
In a good way of course!!!

-- Randy-- I may not be good...but I am slow! If good things come to those who wait.... Why is procrastination a bad thing?

View Mainiac Matt 's profile

Mainiac Matt

9259 posts in 2805 days

#3 posted 05-22-2013 12:13 AM

I’ll measure the air flow by putting my hand over the top… Whether and how loud I say oooooooooh! will be directly proportional to the air flow :^)

-- Matt -- I yam what I yam and that's all what I yam

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