Woodworking machines are notoriously noisy, and adding the roar of a typical dust
collector on top adds to the din. That’s
one reason I was so surprised at how
relatively quiet my new Oneida Air dust
collection system was. But then the
folks at Oneida called and asked me if I
wanted to make it even quieter.
They’ve developed a new add-on
silencer – officially a Stacking Sound
Filter in their catalog – that they said
could reduce the noise level of the dust
collection system by 6-7 dBA. I had my
doubts, but was anxious to try it out for
such a significant attenuation of the
The silencer is a heavy-gauge steel
cylinder with a black powder coat
finish. Inside is a layer of foam
designed to trap the sound before it
exits the collector. You simply install
the cylinder between the exhaust
port on the collector and the final
HEPA filter. Of course, this does
add 16 inches to the filter stack, but
I had plenty of ground clearance to
accommodate the addition.
Installation is quick and simple,
involving just eight sets of bolts and
adhering a foam gasket to the top
of the silencer. It took only about 15
minutes to disconnect the filter and
insert the silencer between the filter
and the dust collector.
Pleasing my ears
Before adding the silencer, I was
already impressed at how quiet the
Oneida system was. The sound level
app on my iPhone rated it at around
82 dB, which was much lower than the
sound level of the previous collector I
had been using.
After installing the silencer, my
sound level app measured the system at
just 75 dB. Since the decibel system is
a logarithmic scale, that’s a significant
drop in sound level. That’s right
around the level that most experts say
will not cause hearing loss with lengthy
exposure. Sounds of 85 dB or more
are considered likely to cause damage.
That means the silencer is a great final
addition to the system.
Oneida’s Stacking Sound Filter
is available in 18-inch and 13-inch
diameters to match different systems.
For more information, visit www.
Making dust collection quieter
by Will Sampson
firstname.lastname@example.org IN THE SHOP
New silencer from Oneida makes significant reduction in dust collector noise.
; Want more?
To see this in action,
watch our video on your
smart phone or online
William Sampson is a lifelong
woodworker and the editor of FDMC
Sound Filter from (black cylinder above
ight) can cut 6-7 dBA from the noise of
the system. Inset: Before the silencer,
the system registered 82 dB; after
adding the silencer it was just 75 dB.
Correction: In the September edition
of “In the Shop,” we reviewed the
Shaper Origin hand-held CNC router,
and we reported a couple of technical
specifications incorrectly. The unit has
a ½-inch ( 12.7mm) corrective range. A
software update allows adjusting the auto
feed rate. It comes with a collet to accept
¼-inch shank bits, but a 1/8-inch shank
collet is also available.