Reply by JeffP

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Posted on To use a cyclone or not

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573 posts in 1597 days

#1 posted 09-23-2015 11:23 PM

I think if the exhaust is going to be outside a true “cyclone” is definitely overkill.

OTOH, a dirt-cheap separator is still a good idea to help you better coral the majority of the waste.

I made one last weekend out of a standard large metal trash can. Just cut a couple of 4” holes in the lid to insert a pvc elbow and a short straight pvc coupler. The elbow is positioned so as to spray the stuff coming in along the perimeter of the can, and then the exiting air comes out the center-mounted straight connector.

It works ridiculously well. Even gets the majority of the “fine but not invisible” dust. Good chance there is still a significant amount of too-small-to-be-seen dust at the exit, but I have no way to measure it.

Both my DC and its exhaust will be outside when I’m finished. Cheap, quiet, functional waste handling and dust reduction. The remainder of the dust remediation will be via a ceiling mounted air cleaner.

Anyway, my separator cost me all of $25 and a couple hours of work. Well worth it I think.

-- Last week I finally got my $*i# together. Unfortunately, it was in my shop, so I will probably never find it again.

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