An idea for dust collector modifications #1: Modifying the standard collector, would it work?

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Blog entry by Craftsman on the lake posted 05-29-2013 09:58 PM 2040 reads 0 times favorited 2 comments Add to Favorites Watch
no previous part Part 1 of An idea for dust collector modifications series Part 2: Fine dusts filter via water. »

Something I’ve been thinking about for a long time. Since I’m involved in whole house renovations at the moment I won’t get to building it for awhile but maybe someone might and find it doesn’t work and put me out of my misery in thinking about it.

I have one of those 1 1/2 hp delta dust collectors. One side is the motor and impeller. The other side is the round metal hoop with a bag on the bottom for the chips and a bag on the top for air expulsion and dust. I took the top bag off the other day and realized that the circular metal hoop that the two bags connect to is made inside just like a thein dust collector minus the baffle. The impeller spits the chips to the left and they circle the metal hoop till they fall into the bag. A thein baffle would all that would be needed to make it into a thein collector.

I was thinking of making two mdf disks that would fit with groove and gasket both on the top and bottom of the hoop and held together with bolts connecting top and bottom pieces. The bottom bag I’d replace with a metal trash can that would also seal to the bottom wooded disk with some sort of removal mechanism not shown below. The top disk I’d connect a 6” pvc pipe in the center going straight up to connect to another idea I had.

So, this is a way to make a thein collector using an existing dust collector and trash can but not having to make the top hoop for the chips to spin around it. Usually thein collectors are before the impeller. Why not after it?

-- The smell of wood, coffee in the cup, the wife let's me do my thing, the lake is peaceful.

2 comments so far

View PurpLev's profile


8535 posts in 3646 days

#1 posted 05-29-2013 10:04 PM

people have done that – it’s on the thein baffle forums in some form or another.

that said – the best feature about the separator is it being BEFORE the impeller converting your DC into a 2-stage DC much like the cyclones. not only does this keep the DC bags from filling up and making it easier to empty the chips but it also protects your impeller from getting hit by flying debris all the time while in use.

putting the baffle after the impeller seems to have little benefit to me. the chips still hit the impeller – no benefit here. The bags still get full and have to be taken off and emptied often – no benefit here either, and all of the dust goes through the impeller and into the filter/bag… so no benefit here either. the only thing it’ll do , is minimize the amount of larger chips getting sucked up the filter….

-- ㊍ When in doubt - There is no doubt - Go the safer route.

View Craftsman on the lake's profile

Craftsman on the lake

2790 posts in 3436 days

#2 posted 05-29-2013 10:19 PM

Thanks Sharon. I hadn’t seen it done before. To comment on a couple of things. This would eliminate the need to make anything but the baffle. No curved input/output ports. No round tube to put on the trash can made of sheet metal or joined pieces of wood to form a barrel shape. It’s all made except for the baffle. And as far as emptying the trash can; either way you’ve got to empty it be it on the traditional thein or this way. No bag to empty.

I thought about the chip issues in the impeller. I’ve never had an issue. Maybe because my separator isn’t strong enough to suck anything up that could damage it like a block of wood. I’ve even cut out the cross member long ago that acted as a baffle to stop such things. It was always getting clogged up. Maybe my impeller is an accident waiting to happen. But it hasn’t happened in 4 years so….

Also, a bag on the bottom and top is how the dust gets into the air. My idea is to have no bags.

The dust filter for fine dust could still be a better filter bag on top or the idea I had in the next installment.

-- The smell of wood, coffee in the cup, the wife let's me do my thing, the lake is peaceful.

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