Robert Bonomi wrote:

Has anyone tried using a water filled container as a filter for dust
collector exhaust air? Sort of like a bong in reverse - the dirty air
gets exhaused under water and bubbles up to the top, where the water
will filter out all the sub-micron dust?

I'm just looking for a cheapskate alternative to 0.5 micron filter
bags.

Any suggestions, comments or other ideas?


"Rainbow" makes/made a vacuum cleaner that works in exactly that fashion.
With only 'so-so' effectiveness at keeping the really fine stuff down.

Actually, my shop vacuum cleaner uses the same thing. A very old
one, "Thermax" or whatever the name of the company was. I've got it in-line
with a centrifugal cleaner. The water filter is the last element.
All I can say is: it works a treat. Not one bit of fine stuff gets out of
that wet bucket. If it gets into the intake, then it's gone.
I'm surprised the system is not more widely used. It makes a lot of
sense to me.


--
Cheers
Nuno Souto
am