Help with Thien Baffle

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Forum topic by ynathans posted 02-23-2014 12:19 AM 1172 views 0 times favorited 2 replies Add to Favorites Watch
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55 posts in 1746 days

02-23-2014 12:19 AM

Hey Folks,

I’m in the final stages on a new DC system in the shop. I’ve run 6” PVC and I’ve got this 2HP system:

I am ready to start on a Thien Baffle and was leaning towards this design from Stumby nubs, primarily because it looks a little less intimidating for a beginner than making my own cover on the 30 gallon trash can:

Start from 8:44:

I was wondering a few things:

1. Any reason this design won’t work? I saw a comment on the video that suggested extending the middle coupler below the bottom baffle, I was thinking I would drill a hole in the center and extend a pipe to a point below the second baffle.

2. What is the input/output setup for this design? I’m going to use 6” elbows—do I connect a 6” flex hose from the DC out to the 90 degree elbow and then a 6” flex hose from the PVC runs in to the coupler in the middle?

3. Woodcraft and Rockler don’t seem to carry 6” flex hose. Anyone know of a good place to get that? And, is there a fitting I will need to connect to the PVC, DC and fittings on the thien cover?

Finally, I’d welcome any comments on using this design and suggestions on alternative approaches. I’m still a beginner so if anyone knows of a good tutorial, step by step for alternatives I’d welcome them

Thanks in advance,


2 replies so far

View Newbiewoodworker43's profile


150 posts in 2471 days

#1 posted 03-11-2014 12:30 PM

Hi Nathan, I have not built my Thien Baffle as yet so I am no expert. I watched the video you pointed out and it appears that it should work. I would assume that the key is to ensure that the seal around the can and the pipes are tight.

Here is a link to Wynn Environmental where you can get 6” flex hose.

I don’t know if this is a good price or not but you can get the 6” hose there.

Good luck with your system.

-- ---Howard, Amesbury MA

View Charlie75's profile


312 posts in 2293 days

#2 posted 03-13-2014 12:24 AM

My seperator is similar but I did the top hat consept. The big difference is the mine sits on top of the can and the one your thinking about is inside the can. I did the top hat because it takes up less room in the can allowing for more dust or chips or whatever. But as far as I know they all work about the same. Mine works great.
I did over flow the can twice. That creates a bit of a mess because the large pieces that would have gone into the can when into the bag. I corrected that by cutting a hole in the trash can and putting in a plexiglass window. That took care of that problem.


-- Charlie75, Alto

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