As I am waiting for the delivery of my dust collector, I have been planning
out the piping runs and the upgrades that I will be making. I already have
a Wynn filter here waiting for it. I have been thinking about the need for
a separator this whole time. My understanding is that there are two primary
reasons for a separator. One is to reduce the frequency of bag changes, the
second is to protect the impeller and the filter from sizeable chips coming
through and damaging one or both. In the couple of weeks since I got my
new machines (TS, jointer and planer) I have noticed that none of them
produce chips that seem to be potential sources of damage to my DC. The TS
produces mostly dust, as expected, and the jointer and planer produce mostly
My question is what kind of machines or what kind of operations produce the
kind of chips that will damage a DC?
Drill press chip collection, perhaps.
The table saw sometimes sucks in thin offcuts, which I would prefer to
stop, prior to their wedging themselves in the overhead ducting.
Before I redid my system, with a trash can cyclone. I found also that
picking up hand plane curlies with a wand on a hose tended to cause said
curlies to wrap themselves around the impeller (fan).
All good reasons to spend either a couple of hours, and/or $50, and
buy/build a seperator.
I haven't noticed any problems with impeller damage. I do use a zero
clearance insert on the TS which probably does as much as anything to
reduce the problem.
I also noticed no problems with chips on the Jointer and Planer. I do
make very small incremental passes on both though.
The biggest problem I have faced has been the shaving from the Jointer
and Planer, clogging the tube from the DC. I use a Delta unit that I
hook up to each machine when I run them. Without a seperater on these
machines, its almost impossible to run without clogging the DC.
I made a very simple seperater. It is a small Rubbermaid toughneck
trash can with 2 holes (1 for input, 1 for output) and a section of PVC
pipe. Then I screwed a board across the can near the input side.
Works like a charm.
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