LumberJocks

Thien Baffle

  • Advertise with us
Project by FarmGopher posted 03-24-2017 01:20 PM 971 views 1 time favorited 3 comments Add to Favorites Watch

I recently built this Thien Baffle for my Delta dust collector. I mocked it up in Sketchup and then tweaked the design as I went. Had some scrap marine grade plywood that I used for the top and bottom, which is very smooth and works well. I used 1/8” thick acrylic around the sides of the separator chamber as well as on the top and bottom of the entry transition. My transition isn’t a perfect round to square, it is more of an octagonal to square, but it seems to work fine. Building this baffle with this style dust collector was a challenge, but luckily the plastic collector bag distorts out of the way. The entrance pipe is 4” and the exit is 6” with an air straightener made out of Rockler t-track packaging. I wanted to be able to remove the trash can portion without having to lift the baffle and dust collector so I came up with this wedge design. The trash can itself is attached to a sheet of plywood with a large hole in the center and then I made an angled frame around the outside.

I put weather stripping on the underside of the top wedge to help make it airtight.

The trash can is sitting on a yet-to-be-improved castor wheel cart. The whole thing just rolls under the baffle unit it is wedged tight.

Lastly I added a little window so that I can see how full the trash can is, and what happens to the dust after it falls below the baffle.

All in all, it works well, and is really mesmerizing to watch the dust swirl around while being separated. If you are thinking about building one yourself I highly encourage you to do it. It is not as hard as it looks and can be made pretty inexpensively. Thanks

-- Matt





3 comments so far

View bushmaster's profile

bushmaster

1910 posts in 1890 days


#1 posted 03-24-2017 02:05 PM

Well done, always interested in this type of projects, some of it I don’t understand, like the last picture with all the tubes. Never seen that before. Looks like you made the unit into a single stage system. Will work more efficent that way. I did the same thing with a large unit.

-- Brian - Hazelton, British Columbia

View FarmGopher's profile

FarmGopher

25 posts in 1299 days


#2 posted 03-24-2017 02:31 PM



Well done, always interested in this type of projects, some of it I don t understand, like the last picture with all the tubes. Never seen that before. Looks like you made the unit into a single stage system. Will work more efficent that way. I did the same thing with a large unit.

- bushmaster

Thank you. My dust collector spins clockwise, and the separator rotates counter-clockwise, meaning the air would have to very quickly change directions when it gets to the blower. The tubes help keep the air moving up the pipe without spinning, which supposedly makes it work better, and quieter. I have read that even air rotating in the same direction as the blower is not ideal, but I’m not an expert.

-- Matt

View EarlS's profile

EarlS

398 posts in 1955 days


#3 posted 03-24-2017 02:56 PM

I have a 1 HP Delta single stage dust collector (650 cfm , -8 “WC) and built a Thien baffle for it. The baffle works well but the pressure drop through the baffle really affects the collection efficiency at equipment being used, especially the table saw. There is more sawdust blowing off the saw blade when I use the baffle than when I don’t. There needs to be a larger negative pressure inside the saw cabinet. I think the dust collector is undersized for adding something like this.

Have you noticed any issues like this?

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

Have your say...

You must be signed in to post the comments.

DISCLAIMER: Any posts on LJ are posted by individuals acting in their own right and do not necessarily reflect the views of LJ. LJ will not be held liable for the actions of any user.

Latest Projects | Latest Blog Entries | Latest Forum Topics

HomeRefurbers.com