I just bought the HF Dust Collector, ($128 with Sale
and 20% Coupon) and I'm not even going to bother to
install the 30 micron bags it comes with. I'm looking
at a couple of canister filters from Wynn. They are
both designed to fit the HF DC as well as the Jet and
all of the other similar units.
They are both far better in performance than the stock
bags, obviously. I'm leaning towards the cheaper filter
because it filters a smaller particle, (.5 vs 1.0 micron)
and because I'm cheap. I haven't ordered it yet though
and haven't really made up my mind. But the real question
I have is how does a canister filter like this compare to
a high quality bag that filters down to the same micron
range? Which will allow for better airflow? With the
Wynn canister setup it comes with a few plastic bags but
if I went with the cloth bag setup would I have to use
2 of them, one on top and one on the bottom or would there
be plenty of airflow with just a cloth bag on top and a
plastic bag on the bottom? Would either of these cloth
bag setups be equal to or better than the canister system
with regards to air flow? This is the least expensive
canister I've seen but it also doesn't have the flapper
cleaner handle on top/inside and it fits inside of the
DC rim versus on top of it. It's cleaned either by
using compressed air from the outside of the filter or
by reaching up inside the filter. It's roughly half of
the price of the Penn State canister and some of the
others I've seen. The rim of the HF DC is 19.5" and
the Penn State filter is for a 20" diameter DC rim but
it looks like the gasket of the filter is wide enough
to still seat on the HF rim. Anyone here try the Penn
State canister filter or any other brand on the HF DC?
Thanks in advance for any advice.
The "wiper" on those other canisters are not going to get into the
grooves which give the pleated filters all the air flow area. On mine,
I occassionally give it a good wap with my hand to knock some fine dust
down, sometimes spray it compressed air, and one time I took it off and
rolled it around the driveway after I had forgotten to knock the dust
out for a while.
Photo of out for a while:
I very happy with the dust collector and the filter on top. I keep my
various pieces of dust hose connectors on top and a nut driver in the
Someday I think about moving the motor to be vertical and give the
exhaust a straight shot into the bag area so I can sort of get a chip
collector under it. But that is many projects from now.
It filters 30 microns until the first set of 20 micron particles lodge in
the openings, then it filters finer until ... well, you get the picture.
You can filter silt in a sieve with large openings if you use pebbles and
sand first. Same thing with your bags. Dust cake is what it's called.
Then there's the meander filter method, which has felt bags or similar,
where the pressure at any given point is so low, and the number of paths so
many that stuff settles like dirt in a slow-moving river. Old GI wool
blanket is a great choice for filter bags.
I have a small Delta DC and use the Penn State submicron bags (the
oversized felt ones). The submicron bags are great, but the air flow drops
noticeably as the bottom bag begins to fill.
I have also been considering the canister style filters, partly because of
the increased surface area of the top bag and the convenience of using a
disposable poly bottom bag.
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