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Getting
Tough on Dust
Dust Collection System Design
and Equipment
In setting up a central dust collection system, good design
makes all the difference. Below, we'll help you get the right
dust collection fittings, ducting, ports and other dust
collection equipment designed to help you get the most out of
your dust collection system.
We also recommend more in-depth research. There are a number
of excellent dust collection books available. One of our
favorites, Sandor Nagyszalanczy's
Woodshop Dust Control, has detailed information on best
practices in dust collection and instructions on designing a
system that will take all of the guesswork out of getting set
up.
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Dust
Collection System Equipment and Design Tips
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Use rigid metal
pipe and metal fittings for longer runs of ductwork.
Air travels smoothly through rigid
spiral pipe, reducing the static pressure losses in
the system and increasing the system's efficiency.
Metal fittings designed to reduce friction in air
handling systems greatly increase the efficiency of
central dust collection systems. |
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Use
flexible hose designed for dust collection.
Using flexible hose that's not designed for the dust
collection can greatly reduce the efficiency of the
system.
Black polyethylene dust collection hose is designed
to produce a minimum amount of static pressure loss and
to stand up to the vacuum pressures produced in dust
collection.
Clear, wire reinforced dust collection hose has the
added benefit of making clogs and buildups of debris in
the system easy to spot and correct. |
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Use PVC
fittings to connect runs of flexible hose.
When it is necessary to connect separate pieces of
flexible hose, use PVC dust collection hose fittings.
PVC elbows produce far less static pressure loss in
situations where an abrupt change of duct direction is
required than a sharp bend in a run of flexible hose.
PVC
Y-connectors and
T-connectors make quick and easy work of setting up
branch ducts.
Dust collection splicers make it possible to connect
straight runs of hose, and
dust collection couplings allow two or more fittings
to be joined directly together. |
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Isolate each
woodworking machine in the system with a blast gate.
In most cases, to achieve adequate dust collection at
individual machines, you will need to use either
automatic or manual blast gates to shut off the air flow
to other machines that are not in use.
Automatic blast gate systems are an extremely
convenient solution. Both the
Ecogate Blast Gate System and the JDS
Automated Blast Gate System open the correct blast
gate and turn on the dust collection system when you
flip the power tool's switch. An added feature of
automatic systems is that they prevent you from
forgetting to turn on the system and open the correct
gate.
For a more budget economical solution, manual blast
gates will work perfectly well. Rockler offers plastic
blast gates designed for use with flexible hose and
PVC fittings and metal
blast gates that can be used with either flexible
hose or metal pipe. Blast gates designed
specifically for use with spiral metal pipe are listed
along with the
spiral pipe and fittings offer. |

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Outfit you tools
with dust collection ports, hoods.
The dust
collection performance for many open stand table saws
and jointers can be greatly improved with the
installation of a
dust collection hood. The hoods can be easily
adapted to fit most contractor-type table saws and 6'
and 8' jointers and are designed to work with 4' dust
collection hose. For router tables, use the
universal dust port. The universal dust port's
flange attaches with screws and can be used with 2-1/2'
dust collection hose or 2' shop evac hose. |
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Use universal
ports for tools with no direct dust collection port.
For tools with no direct dust collection attachment, or
to enhance primary dust collection, use a
tabletop dust fitting or a free-standing
universal dust collection port. |
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Use quick
release connectors.
If you are setting up a
portable dust collection system, quick release
connectors such as
keyed hose clamps and quick disconnect
dust collection fittings will make moving your dust
collector from machine to machine quick and easy. For
stationary systems, they will make set-up, cleaning and
inspection much less time consuming. |
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Use the right
size of reducer or adapter to step down hose diameter.
In general, it is better to use large diameter hose
for longer runs and step down to the correct size for
machinery dust ports as close to the machine as
possible. Using the wrong-sized or makeshift adapters to
step down hose diameter creates unnecessary drag on the
system.
Reducers designed for use with dust collection hose
make transitions between hose diameters as smooth as
possible. The
universal duct adapter allows transitions between
any combination of the most common hose diameters. The
dust collection hose adapter allows 4' hose to be
connected to most standard 2-1/4' bench top tool dust
ports. |

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Ground your dust
collection system's ductwork.
Static
electricity build-up in your system's ductwork presents
a fire hazard and can produce an electric shock on
contact. When properly installed, a
dust grounding kit will greatly reduce the static
electricity build-up in your system's ductwork. |
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Increase your
system's chip holding capacity with a dust collection
separator.
Dust collection separators increase the waste
holding capacity of your dust collection system by
separating out larger sized chips and shavings before
they reach your dust collector. They also reduce wear
on your dust collector's blower assembly caused by
collisions with large debris particles. |
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Next Page
Up to this point, we've been concetrating on chip,
shaving and large particle dust collection. But that's only half
the battle. Next, we'll help you get the fine dust in your shop
under control.
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