Dust collection... for the mitre saw..

  • Advertise with us

« back to Safety in the Woodworking Shop forum

Forum topic by degoose posted 03-29-2011 10:15 PM 24649 views 21 times favorited 17 replies Add to Favorites Watch
View degoose's profile


7284 posts in 4598 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…

-- Be safe.

17 replies so far

View Joe Lyddon's profile

Joe Lyddon

10963 posts in 5296 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


11866 posts in 4931 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

7170 posts in 4438 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…

-- " There's a better way.....find it"...... Thomas Edison.

View NBeener's profile


4816 posts in 4417 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


1850 posts in 4230 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

4275 posts in 4408 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

2718 posts in 4530 days

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

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


View Jim Bertelson's profile

Jim Bertelson

4275 posts in 4408 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 4318 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


7284 posts in 4598 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…

-- Be safe.

View devann's profile


2260 posts in 3936 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


17040 posts in 4578 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


439 posts in 4464 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


5777 posts in 4475 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?

-- Please like and subscribe to my YouTube Channel

View rance's profile


4279 posts in 4404 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--

showing 1 through 15 of 17 replies

Have your say...

You must be signed in to reply.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics