Need advice: Thien Baffle Vs Super dust deputy

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Forum topic by Brett posted 09-24-2018 05:10 PM 1061 views 0 times favorited 6 replies Add to Favorites Watch
View Brett's profile


56 posts in 611 days

09-24-2018 05:10 PM

Hi all. I currently have a Thien baffle on a trash can separator for my dust collection system (2 HP harbor freight DC).

Yesterday I was at Woodcraft and scored a Super Dust Deputy for $20 at their “scratch and debt” sale. Looks perfect as far as I can tell.

Anyway, I was looking at my current setup and I’d have to do some serious engineering to get the SDD to work with my setup. It’s cutrently sitting next to my garage door and if I were to raise it up to accommodate the SDD it would impede my garage door from raising.

So my question is: Is a cyclone a lot more efficient than a Thien baffle on a trash can? I am happy with my current setup but if the cyclone is much better I’m happy to accommodate it.


Thanks in advance!

6 replies so far

View EarlS's profile


2879 posts in 2767 days

#1 posted 09-24-2018 05:16 PM

The SDD Cyclone should have less pressure loss than the thein baffle and trash can. I only use a trash can separator in line when I’m planing on the DeWalt DW735 because the planer has a small blower built into it and the baffle/garbage can handle the large volume of chips/dust from the planer and is easier to empty than the can under the Laguna cyclone I have.

-- Earl "I'm a pessamist - generally that increases the chance that things will turn out better than expected"

View fivecodys's profile


1437 posts in 2055 days

#2 posted 09-24-2018 07:57 PM

Hi Brett,
I mounted my setup in the corner by the garage door.
Here is a link to the process and all of the comments others here gave as I went through the build.
I hope that it is helpful.

-- When you leave your shop for the night, make sure you can always count to 10.

View Brett's profile


56 posts in 611 days

#3 posted 09-24-2018 08:12 PM

That was my suspicion as well Earl.

Thanks for the link fivecodys. I don’t really have an option to vent outside so I have to keep my filter and bag for the DC inside next to the impeller. I didn’t want to run a long 5” DC hose from the impeller exhaust to the filter/bag but that may be the only way if I am going to use the SDD. The impeller would have to be up higher like it is for your set up but then the hose would drop down about 3-4 feet to the filter/bag separator. I’m just concerned about restricting air flow if I do this.

View BattleRidge's profile


111 posts in 635 days

#4 posted 09-25-2018 05:11 PM

I picked up my SDD at Woodcraft on Saturday for $20 and like you, while it was a ‘scratch and dent’ sale, it appears to be in new condition and the mounting hardware & gasket had never been opened. A significant savings from the standard $169.99 price.

I am planning on connecting the cyclone to my Grizzly G0548Z DC (6” inlet, 2hp w/ one micron canister filter), but the budget is somewhat limited so I would like to do everything as economical as possible and possibly upgrade more in the future if needed. My present set-up is two 4” PVC pipes connected to the saws, jointer & planer with 4” flexible hose (ideally I would like to upgrade to 6” pipe with 4” hose).

I’d appreciate hearing (and seeing) how your final design and set-up comes together, particularly in regard to the adapters, hose / pipe, collection box and so forth. I just picked up my DC a couple weeks ago (upgrade from a shop vac / Dust Deputy combo) so am still pretty much in the beginning stages of everything.

View EarlS's profile


2879 posts in 2767 days

#5 posted 09-25-2018 05:21 PM

Brett – use as much PVC as you can rather than hose and stay with 5” PVC if you can get it and have room. That will help with the pressure loss and also keep your air flow much higher than 4” hose. Keep elbows to a minimum as well.

I put a blog together with links to a bunch of the good DC sites.

There is an overwhelming amount of good information on those sites as well.

-- Earl "I'm a pessamist - generally that increases the chance that things will turn out better than expected"

View them700project's profile


170 posts in 1437 days

#6 posted 09-25-2018 05:30 PM

-I lucked out in that I have an attic above garage. so i ducted the HF 2hp up, so i only have ducting and the SDD and can downstairs. Also much quieter this way. I did notice this only works great with fine dust similar to what comes from table saw/bandsaw/router.

-I use a CT26 with small dust deputy for all festool and chop saw.

-and I found that the only way to keep chips from clogging up my jointer/planer was to do a ridgid 6.5 hp shop vac.(I just picked up a bucket seperator lid for this, havent tried it yet though.

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