Dust collection... for the mitre saw..

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Forum topic by degoose posted 03-29-2011 10:15 PM 11476 views 20 times favorited 17 replies Add to Favorites Watch
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7143 posts in 2447 days

03-29-2011 10:15 PM

Topic tags/keywords: dust collection saw hood jig miter saw

From the last post you will be aware that I have built a Hood for my 12 inch Hitachi…

Basically this is a box made from 1/2 inch MDF….that sits behind the saw and catches any saw dust that is not directed to the 2 1/2 inch hose attached to the saw itself… where the bag is usually.

This hose is run through the back of the box and via a reducer connected to the 4 inch ducting system…

At the back of the box is a small plenum chamber with baffles…and a connector…

The angled baffles are cut to suit…

and then glued together… this box will fit behind the main hood.. there is a small gap left when the main hood is sat on the bench… dust is sucked through this slit…

This system was designed to allow the saw to pivot both ways to 45 degrees….

and a behind the scenes shot…

This system works extremely well … catching and collecting nearly 95% of the dust….I am happy with this… just a quick blow with some compressed air moves the dust that drops behind the saw towards the slit…and the last bit is sucked up as well.

I got the original idea here... thanks Blankman… I did however make a few changes… don’t we all…

-- Drink twice... and don't bother to cut... @ For lovers of all things timber...

17 replies so far

View Joe Lyddon's profile

Joe Lyddon

8554 posts in 3144 days

#1 posted 03-29-2011 10:26 PM


-- Have Fun! Joe Lyddon - Alta Loma, CA USA - Home: ... My Small Gallery:"

View Dusty56's profile


11781 posts in 2780 days

#2 posted 03-30-2011 12:04 AM

Very nice ideas , Larry : )

-- I'm absolutely positive that I couldn't be more uncertain!

View Rick  Dennington's profile

Rick Dennington

4626 posts in 2286 days

#3 posted 03-30-2011 12:39 AM

Stellar job, Larry on the dust hood. I built one for my m.s. several years ago, but it doesn’t work very good..

I think I may to need to re-think it and start over again, now that I’ve seen yours….thanks for posting…

-- " I don't makes my coffee spill...."

View NBeener's profile


4808 posts in 2266 days

#4 posted 03-30-2011 01:01 AM

Now THAT … is how it’s done !

Very nice !

Kept thinking, last night, about using your DC plumbing system as a gym for guinea pigs … if you unplugged the DC.

But wouldn’t that be cool ?? You and a few mates … drinking a few beers … and just watching Fluffy recon the whole system ?

-- -- Neil

View SASmith               's profile


1810 posts in 2079 days

#5 posted 03-30-2011 01:21 AM

Great idea. I need this setup on my RAS. Thanks for sharing this setup.
Now thanks to NBeener I need a guinea pig. They unplug clogs don’t they?


-- Scott Smith, Southern Illinois

View Jim Bertelson's profile

Jim Bertelson

3769 posts in 2256 days

#6 posted 03-30-2011 06:13 AM

Good looking system…......little bleary eyed after working all day…......have to come back and look serious tomorrow.

-- Jim, Anchorage Alaska

View Kent Shepherd's profile

Kent Shepherd

2703 posts in 2378 days

#7 posted 03-30-2011 09:58 PM

Simple, but effective! (Unfortunately, I can’t do anything simple—huh?)

-- She thought I hung the moon--now she just thinks I did it wrong

View Jim Bertelson's profile

Jim Bertelson

3769 posts in 2256 days

#8 posted 03-31-2011 05:16 PM

I have to revamp my radial arm saw DC soon, a fairly easy thing to do. I will be buying a miter saw for our vacation house, however, and I may plagarize you to collect the dust.

Thanks Larry.

-- Jim, Anchorage Alaska

View richgreer's profile


4541 posts in 2166 days

#9 posted 03-31-2011 06:45 PM

Let me share my design. The major difference is that mine has a cavity below the the miter saw level and my DC is connected at the bottom. That creates a good downdraft that captures a lot of the dust.

If I don’t have the DC on, I can literally see the dust escaping into the shop. With the DC running, I see very little dust escaping.

On the inside of the lower portion of the collection box the sides are beveled in to the center. I think that helps.

-- Rich, Cedar Rapids, IA - I'm a woodworker. I don't create beauty, I reveal it.

View degoose's profile


7143 posts in 2447 days

#10 posted 03-31-2011 09:59 PM

Rich,Your ideas certainly make a lot of sense.. thanks for sharing..
Jim, go for it…

-- Drink twice... and don't bother to cut... @ For lovers of all things timber...

View devann's profile


1920 posts in 1784 days

#11 posted 03-31-2011 10:17 PM

Here ya go Larry, my take on it. Made from FRP and angle metal used for drop ceilings

-- Darrell, making more sawdust than I know what to do with

View stefang's profile


14976 posts in 2426 days

#12 posted 04-01-2011 02:18 PM

Looks like a good solution Larry. Personally I find that the direct hook up to my own saw hardly catches anything at all, but the hood works well. Your set up with the hose mounted in the back looks very effective.

-- Mike, an American living in Norway.

View Dustmite97's profile


431 posts in 2312 days

#13 posted 04-04-2011 04:18 AM

This is something I have always had a big problem with. I use a plastic dust hood now and it does work really good but I think that your set up is the way to go.

View dbhost's profile


5426 posts in 2324 days

#14 posted 04-11-2011 03:44 PM

That’s a project I need to tackle soon! Do you have any problems sliding the saw?

-- My workshop blog can be found at

View rance's profile


4198 posts in 2252 days

#15 posted 04-11-2011 04:37 PM

How about a simple umbrella at the back?

-- Backer boards, stop blocks, build oversized, and never buy a hand plane--

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