Parallel Dust Deputy #1: Parallel Dust Deputy - Proof of Concept

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Blog entry by MinnesotaSteve posted 03-10-2016 02:29 PM 3103 reads 0 times favorited 5 comments Add to Favorites Watch
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A few years ago I bought a Dust Deputy cyclone with the buckets and everything, and it was most awesome. My vacuum at the time was a little 3HP Shopvac. However last year I bought a bigger 6.5HP Shopvac which pulls a lot more air as well as a lot more suction. This new vac overpowers the Dust Deputy, when turned on the hose going to the cyclone violently contracts.

In the manual, Oneida shows using two Dust Deputy cyclones in parallel to better handle a larger vac. They even sell a kit with three cyclones that you can hook up two vacs to to get even more air flow. Now I don’t know if the limitation here is CFM or if it’s the suction, but I just find this interesting to experiment.

So this past week the cyclones were on sale for only $40 at the local Menards so I bought a second one, and a plastic tub and some 2” PVC fittings, and came up with this just to see if it’d work.

It worked in principle, however the tub by itself isn’t strong enough to handle the suction if the hose is blocked. My next plan is to build a plywood box, and then use the plastic tub as a removable drawer to allow me to dispose of the sawdust.

5 comments so far

View Kaleb the Swede's profile (online now)

Kaleb the Swede

1915 posts in 2569 days

#1 posted 03-10-2016 04:35 PM

Very neat idea!

I guess you would have to seal that plywood somehow but it should work I would guess.

Maybe you could find a plastic 55 gallon drum. Supposedly places give them away free. That might hold it better.

-- Just trying to build something beautiful

View MrFid's profile


900 posts in 2504 days

#2 posted 03-10-2016 06:40 PM

Holy smokes! $40? Great buy. I only need one but at that price I’d buy another for sure.

-- Bailey F - Eastern Mass.

View DrDrewInOhio's profile


30 posts in 1408 days

#3 posted 03-13-2016 12:29 AM

Hey Steve…

Try this search on your local CRAIGSLIST:

55 +( gal | ga | gallon | gal. ) +( drum | barrel | barrels | drums )

These STEEL 55 Gallon drums are often $10 – $15 with lids and locking collars… cheaper than modifying most things.


-- Drew - NE Ohio

View MinnesotaSteve's profile


54 posts in 1491 days

#4 posted 03-21-2016 05:54 PM

My basement shop is only a 10’x12’ area… so I have something of a limit to size. I have a countertop(more of a shelf as it’s plywood on shelf brackets next to a sink), and my vacuum(inside a box to quiet it down) and this separator sit under there. So really no run for a big drum. This box idea works as I can then carry it outside to empty.

I finally got around to building my plywood enclosure, and some fine tuning… had to widen the hole I had cut for the cyclone so it was wider than the output hole otherwise it restricted the dust dropping into the bottom. Sealed cracks with latex caulk as well as the seal around the bottom of the dust deputy…. then taped up my pvc joints with gorilla tape.(love this stuff) and it works pretty well.

I thought I’d cut that hole in top with my Dremel and it’s circle jig and well ever since I bought that thing I’ve never found a task that it actually worked well on, and this was another example. Although it did work in that plastic tub lid. lol I ended up using my router to try to clean it up. Should have just used a jigsaw to cut the hole in the first place.

View guitarchitect's profile


43 posts in 3002 days

#5 posted 07-30-2018 05:41 PM

love this idea! i’ve got a festool CT26 and want to lose the shop vac, so I’m thinking a pre-separator under my bench would be great. How did you empty your bin – have you got something that slides out? and is it still working today or did you need to overhaul/change it up?

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