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Dust Collection Options for a Unisaw

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Forum topic by NedG posted 01-26-2012 04:54 PM 2575 views 0 times favorited 6 replies Add to Favorites Watch
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NedG

56 posts in 1774 days


01-26-2012 04:54 PM

I am buying a new Delta Unisaw for my garage shop and wonder what the options are for dust collection. I had hoped to simply connect my 3hp Sears shop vac to the saw, but I now realize that’s not powerful enough. The Jet 650 has been suggested as a modest priced system, but such a beast is noisy, large, and maintenance intensive. If I do have to go with a Jet like dust collector, which is better: the 5 micro, the 30 micro, or the canister type filtering system? Any thoughts will be appreciated!—- Ned


6 replies so far

View NBeener's profile

NBeener

4808 posts in 2633 days


#1 posted 01-26-2012 04:56 PM

Harbor Freight 2HP DC, with coupon—about $139.
Wynn 35a cartridge filter—about $100 – $160, depending on which model.

Commence … cutting.

-- -- Neil

View Bill White's profile

Bill White

4448 posts in 3420 days


#2 posted 01-26-2012 05:06 PM

Ditto on the HF collector.
Bill

-- bill@magraphics.us

View Mainiac Matt 's profile

Mainiac Matt

5989 posts in 1788 days


#3 posted 01-26-2012 05:34 PM

The fine dust is the worst for your health as that’s the stuff you actually inhale without knowing it.

The key is moving a large volume of air (CFM)and then pushing it through a fine filter. If you don’t move enough air, you don’t actually pick up and move the dust (just cause you’re moving the obvious stuff, doesn’t mean your moving the micro stuff). If your filter isn’t fine enough, you’re just recycling the fine stuff roundy-roundy, as it goes right through the bag.

But the DC’s rated CFM is only half of the story….as you won’t get that air flow if you choke the system….

If the bag or filter gets caked up… your volume drops
If you’re pipes are to small (i.e. you’re using shop vac hose) your volume drops
If your system is underpowered to start with…. your volume is insuficient.

I like the canisters systems because they typically filter down to 1 to 3 microns, and you can spin the agitator every so often and knock most of the build up off of the inside surfaces.

Good luck

Matt

-- Pine is fine, but Oak's no joke!

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Scot

344 posts in 2855 days


#4 posted 01-26-2012 09:56 PM

Add a cyclone separator….98% of the dust never makes to your filters

-- If the old masters had power tools, they would have used them. So get off your damn High Horse.

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Scot

344 posts in 2855 days


#5 posted 01-27-2012 04:27 PM

I will try to post pics of my dust collection system and unisaw today. The new unisaw does need a higher cfm due to the way delta improved or I should say added ducting inside the cabinet. It is a great improvement but a shop vac or low cfm system (750 cfm or less) isn’t going to due anything but piss it off. I ran 6” duct to mine and it reduces to 5” at the dust collection port. I have a Grizzly 3 HP canister filter collector with a cyclone separator in front of it. The Grizzly is rated at 2320 cfm, but with friction lose due to the cyclone, bend and piping I figure my system is at around 1800 cfm or better. It will suck an 8” phillips head screw driver with enough force that it punched through the first bend in the system ! All of my stationary machinery is or will be hard piped in, it’s amazing how much volume is lost in even large diameter hose.

-- If the old masters had power tools, they would have used them. So get off your damn High Horse.

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Scot

344 posts in 2855 days


#6 posted 01-27-2012 06:38 PM

I have finally posted pics of my new shop. I put a couple of the dust collection system in so you can see what I did. The system is still under construction but is complete to my Unisaw.

-- If the old masters had power tools, they would have used them. So get off your damn High Horse.

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