On 6/11/2019 10:25 PM, Meanie wrote:
On 6/11/2019 9:13 PM, John McGaw wrote:
On 6/11/2019 8:34 PM, Meanie wrote:
I'm tired of the sawdust induced filter in my shop vac and decided it's
time to get a better filter, which I assume there isn't anything to stop
sawdust clogging, or make a cyclone separator. Thus, anyone have any
suggestions for a filter or easy plans for a cyclone separator?

I just use these expensive paper bags in my Fein to collect the big stuff
and their HEPA filter to keep anything escaping (plaster dust, for
example) from blowing through and have no problem with clogging. You
don't say what sort of filtration your vac has. Maybe that is the basis
of the problem.

https://www.amazon.com/gp/product/B0...?ie=UTF8&psc=1


How are you using the paper bag in a shop vac? I'm still using the original
paper filter that came with the vac.

I do have a dust collection system for my bigger tools but use the shop vac
for smaller hand tools and of course to clean the shop mess.

Don't know what you mean by "how". The bags in question are meant for the
vacuum in question -- see the little port in the side of the bag where the
hose feeds in. The paper is thin and has a very large surface area, doubled
over in the large canister, and the motor is very powerful so it just sucks
air through the bag's surface leaving the dross behind inside. Anything
super-fine that gets through the bag is trapped by the HEPA filter.
Theoretically I don't think that both methods are meant to be used together
but I do it anyway. I don't know if your vac has any such option but mine,
being German, is probably over-engineered (probably over-priced too but
nothing I can do about that).

I found that my DC _did_ get clogged by fine dust when I was doing a lot of
heavy sanding and the bag had to be beaten to loosen it. I set up a kludge
with a second bag and that alleviated the problem but didn't eliminate it.