Small Thein dust separator for shop vac

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Project by ldl posted 06-16-2012 02:50 AM 9991 views 33 times favorited 5 comments Add to Favorites Watch

I finally decided to build a Thein separator for my shop vac. I think I have favorited every project posted of the separator. I used a 15 gl oil drum for the base. This is a very good size for my shop vac. It werks very well. I used my home made circle cutter to cut the grove in the top lid. Thinking I would have to fasten the lid to the drum I left the lid with a 2” lip past the lid groove. I put weatherstripping in the groove. It sealed so well I didn’t need to fasten it down. Then I also cut the bottom plate. I cut a relief in the lower plate for 2/3 of the dia by 1 1/4 in. I also put some weatherstripping on the outside edge of the lower plate as my drum wasn’t exactly round. I used 2” plastic pipe fittings through the lid. As of now I have used it about a week and picked up a fair amount of sawdust and fine dust. I have about 6in of material in the separator drum but no dust whatsoever in the shop vac. I am well pleased with it so far.

Soon I will build a bigger one for my DC based on a 30gl trash can.

-- Dewayne in Bainbridge, Ga. - - No one can make you mad. Only you decide when you get mad - -

5 comments so far

View grumpy749's profile


228 posts in 3463 days

#1 posted 06-16-2012 02:00 PM

This looks great, Maby add a moble base for the vac and drum together to make it more user frendly. A project that looks and works well is a winner. I like home made tools the best. First class.

-- Denis in Grande Prairie. Yesterday is history, tomorrow is a mistery, but today is a gift. That is why it is called the present.....Pink !

View BigTiny's profile


1709 posts in 3974 days

#2 posted 06-16-2012 03:02 PM

Sounds a lot like me with favoriting every separator article. If I can find the room, I want to add one of these to my shop, but I don’t even have room for my shop vac. It sits upstairs in the utility closet and I have to haul it down when the dust gets about ankle high…


-- The nicer the nice, the higher the price!

View Alexandre's profile


1417 posts in 3276 days

#3 posted 06-16-2012 03:04 PM

Hey guys- Whats better, a cyclone dust separator for shop vac (like dust deputy) or thein dust seperator?
Not in budget wise, but in dust seperation wise.

-- My terrible signature...

View exelectrician's profile


2339 posts in 3513 days

#4 posted 06-16-2012 05:08 PM

You did a very good job on this , well done.

-- Love thy neighbour as thyself

View ldl's profile


1135 posts in 3451 days

#5 posted 06-17-2012 02:18 AM

Thanks for all the comments. Like all others before I got the idea from others. Since building this one I think I can delete all the separator favorites now except the ones for the top hat.

It is in my plans to build a cart for them when I get in my shop. It fits under the edge of my table right now which makes it sorta out of the way. Maybe get a prettier drum not so beat up. The drum was free so I didn’t argue about a few dents.

Concerning the diff in the cyclone and the Thein model I don’t really know. I bought a “dust deputy” and started to use it but it was to tall for where I needed to put my separator so I built the Thein.

I am having an old dilapidated apartment in my back yard torn down and this is where my shop will go. It will be a while yet before the shop goes up but after werking in a 12×20 back porch shop it will be nice to have some room for a change.

-- Dewayne in Bainbridge, Ga. - - No one can make you mad. Only you decide when you get mad - -

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