I've got a 1 hp blower that's constantly clogging up with sawdust. So I want
to build a dust separator to see if this will solve my problem. Although I
suspect the blower is too small.
I've seen the Lee Valley lids, but can't get over the price for a piece of
plastic. I'm also not sure that it's the best design.
I'm going to make the lid out of mdf with a groove to fit over the lid of
the garbage can. But I'm thinking that the output should be a pipe down the
center of the can and not another elbow on the opposite side of the lid? I
also thought that I should put wings (baffle) on each side of the center
pipe to force the airflow to the outside of the can. The center pipe would
look something like this --O-- (Top view). I'm not sure if the baffle
should be a triangle, smaller at the top and larger at the bottom to force
the air more to the outside (upside down cyclone). I guess a spiral would
be even better, but a tad to much work for my experiment. How about an
upside down cone, with the pipe in the middle?
Perhaps someone with more knowledge/experience could explain the error/air
of my ways.
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I have a lid from Woodcraft, I have no idea what brand it is. I paid
$30 for it. My lid has actual ABS pipe fittings, some lids have
simple holes for the hose. I find the first version to be superior,
as it's much easier to attach and seal the hoses.
FWIW, I could have made my own for about $15, including fittings. I
think spending the $15 was worth it, but if you're looking for an
engineering challenge, it may not be to you.
Mine works great, I saved my box and receipt for a week until I was
sure I liked it. If I had any lack of confidence in it, I would have
i built one of these for my shopvac that i use with the planer.total
cost? about 5$
works like a charm and allows very little of the dust/chips to get to
the vac itself.
i'll snap a few pics and post to ABPW
you are making this whole thing way too complicated, Bill. The
manufactured plastic DC separator lids work fine and they don't use all
that baffling stuff you are considering. Make it easy on yourself--air
in one side of the top and outlet at the other side. Mine works like a
champ--a purchased plastic lid...
Bill Stock wrote:
I made mine out of a large cardboard barrel. I made a top out of layers of
1/4 ply (with the middle layer protruding to fit into the locking ring),
made an adapter for the side (several layers of 3/4 ply scrollsaw cut to fit
around a 4" plastic hose splice, bandsawn to fit the curve of the barrel and
glued/screwed inside and out), and another adapter in the top for a 4"
plastic elbow, to which I attached the bag from my dust collector. I then
cut a piece of 1/4 ply about a foot square and fastened that to the bottom
of the lid about six inches in from the inlet so that incoming chips would
hit it and fall straight down. Casters on the bottom, and it works like a
charm. Didn't cost me a penny, as I scavenged the barrel and all the wood.
Okay, maybe a buck for screws.
Thanks for the replies guys. Interesting design Steve.
I'm a little cramped for space, so I was considering taking the wheels of my
blower and laying it flat on top of my barrel. This would make the barrel
outlet the inlet for the blower. I'd need to cut a hole in the side of the
barrel for the input (ala Steve), since the blower would cover the top of
the barrel. This would eliminate the need for a flex pipe between the blower
to the separator. I'm hoping to eliminate as much resistance as possible,
since I've only got 1 HP to work with. I already bought a new bag to replace
the small bag that came with my blower. Just need to build a hanger/barrel
BTW, Does anyone know of a source for those cardboard/fiber barrels in the
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