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Dust collection for Unisaw - question

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Forum topic by mundele posted 05-26-2020 11:26 AM 485 views 0 times favorited 13 replies Add to Favorites Watch
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mundele

18 posts in 49 days


05-26-2020 11:26 AM

I recently bought and am rebuilding an ‘89 Unisaw (34-802). I’ve painted it, replaced arbor bearings, rewired it, checked the motor, cleaned and re-waxed all the cogs and gears, remounted the table and fence. one of the last things to do is add a motor cover and dust collection. This saw is the one with the sloped dust chute and the little 2”ish slot where the dust can slide out. All the DIY and stock motor covers I see cover the big upper hole but leave the slot open, which you have to make or buy another dust cover for (which looks like an HVAC register but longer and skinnier). Why do folks not build a taller motor cover with a dust port in the bottom, covering both holes?

I am on the verge of building one out of plywood, but wanted to ask in case there’s some reason this isn’t often done.


13 replies so far

View Fred Hargis's profile

Fred Hargis

6234 posts in 3263 days


#1 posted 05-26-2020 12:04 PM

Here’s what I did, my saw was a 2001 model. That slot was about 4” (as I recall) on mine so this may not work for you. That 6” pipe had to be flattened a little on the end, so if you looked at at from the saw end, the pipe would look oval.

-- Our village hasn't lost it's idiot, he was elected to congress.

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CaptainKlutz

3160 posts in 2264 days


#2 posted 05-26-2020 12:57 PM

IMHO – the dust chute has different cover for couple reasons:
- The motor cover ‘door’ gets opened every time you drop something while changing blades, or need to clear thin debris that has fallen beside the blade. Never need to open or expose that lower area. For a Klutz like me, I open the motor cover every 2nd or 3rd time I change a blade. Mine has hinges and quick release latch, which I suggest everyone use.
- Putting the dust collection removal with longer door means you dust collection plumbing needs to have enough extra hose to swing out of way. Flex hose has highest pressure drop of any dust transfer method and you want to minimize flex house length any chance you get. Many folks use large 5-6” hard pipe (like Fred above) to improve collection of fine dust, and that doesn’t allow you open the door with pipe attached.
- When the motor cover extends down low enough to seal the dust chute; the large motor cover/door is only 3.5” off the ground and will hit the lift leg on standard Delta mobile base as you open the door or remove the cover. DAMHIK

Bell Plastics in CA sells a dust cover to fit that Unisaw if you don’t want to make one.

YMMV

-- If it wasn't for bad luck, I wouldn't have no luck at all, - Albert King - Born Under a Bad Sign released 1967

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splintergroup

3777 posts in 1993 days


#3 posted 05-26-2020 10:04 PM

I have the same vintage Unisaw and went with a sheet metal floor vent (6” round to rectangle) and used an adjustable angle 6” elbow to direct it rearward (I have 6” DC ducting for the saw). I hate giving up the under table storage space that door and mobile base lift use up, but by going out the back I gained the extra few inches from the outfield table to the top of the base.

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mundele

18 posts in 49 days


#4 posted 05-28-2020 11:46 AM

Captain, your comment was most helpful. I’m about halfway through building a wood cover. I built a little frame to mount onto the saw and a box to cover the motor. I didn’t plan all that well for the shelf bracket so I’m working around that, I’d like to be able to swing open the cover without unbolting a shelf (which I’ll build eventually). Thanks for the advice.

Next is dust collection then I’ll probably rebuild the table on the right of the blade. I want to call it outfeed but it’s not that. hangover? hangover table. Coined a new phrase.

View JackDuren's profile

JackDuren

1211 posts in 1730 days


#5 posted 05-28-2020 12:38 PM

You can’t find the original dust collection pipe for the saw. I advertised on Woodnet for the original one and had it within the week… Never know….

View hairy's profile

hairy

3070 posts in 4302 days


#6 posted 05-28-2020 02:16 PM

I have that same saw. Let’s just say dust collection is a work in progress.

Here’s what I’ve done so far. https://www.lumberjocks.com/topics/278993

It’s better than it was before, but not yet real good.

-- Genghis Khan and his brother Don, couldn't keep on keeping on...

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JackDuren

1211 posts in 1730 days


#7 posted 05-28-2020 02:35 PM



You can t find the original dust collection pipe for the saw. I advertised on Woodnet for the original one and had it within the week… Never know….

- JackDuren

Here are a couple pictures of what you need …..

View bondogaposis's profile

bondogaposis

5786 posts in 3121 days


#8 posted 05-28-2020 07:31 PM

I made one out of plywood for mine, and put some gasket material around the edge.

-- Bondo Gaposis

View mundele's profile

mundele

18 posts in 49 days


#9 posted 05-28-2020 08:38 PM


You can t find the original dust collection pipe for the saw. I advertised on Woodnet for the original one and had it within the week… Never know….

- JackDuren

Nice! I need to go to woodnet.

Here are a couple pictures of what you need …..

- JackDuren


View Aaron312's profile

Aaron312

24 posts in 170 days


#10 posted 05-29-2020 11:48 AM

I just ordered this from Grizzly for my Left Tilt Unisaw. It’s from a Grizzly G1021 15” planer, p/n P1021X2179. Only $9.00 so if it doesn’t work, it’s not a big loss. I have a Grizzly bear crawl “all swivel” base and I need to clear the foot pedal on that corner.

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Aaron312

24 posts in 170 days


#11 posted 06-04-2020 01:52 AM

See my post above. Got the part from Grizzly today. Fits great. About an inch to narrow, but I will just make a wooden frame and attach with magnets or sheet metal screws. And it clears the foot pedal on me Grizzly mobile base. For $9.00 I’m happy.

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mundele

18 posts in 49 days


#12 posted 06-04-2020 02:58 PM

Nice! I’m in the process of building one out of stuff I had on hand. Will post a pic. Magnets are a great idea. May steal that one (with some wood cleats to center it on the slot

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mundele

18 posts in 49 days


#13 posted 06-06-2020 04:14 AM

I ended up building my own. Still need more dust pipe but I think it’ll work. attaches with magnets and has little feet to hold it up. Complete with matching paint and a sloping floor…

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