researchers found that the wood dust generated by table saws
is often poorly controlled. To address this problem, researchers
designed and tested a control system for table saws that significantly
reduced wood dust emissions.
Table saws are widely used in many types of woodworking operations.
Although they are sometimes used only sporadically, they are
found to generate significant amounts of dust. The traditional
method of dust control for table saws is exhaust through the
bottom of the table. This is often not adequate to control the
large amounts of high speed dust that are generated by the saw
blade. To better control the dust, NIOSH researchers added a
Local Exhaust Hood to the table saw. (See ILLUSTRATION) Another
modification involved the addition of a divider plate in the
table base to increase the exhaust velocity and aid clean out.
The table exhaust location was also relocated. The exhaust hood,
when placed over the top of the blade saw, contains the dust
as it is thrown from the saw blade. Laboratory testing indicates
that the exhaust hood reduces wood dust emissions by greater
than 90 percent when it is installed on a typical table saw.
The hood is designed so that it will not interfere with the
operator's activities, is easy to install and maintain, and
is inexpensive to operate. This dust control device is not currently
commercially available. Call NIOSH for more information.
more information about controlling this hazard, or for information
on other occupational health and safety issues, call NIOSH
at: 1-800-35-NIOSH (1-800-356-4674)
article Controlling Wood Dust from Table Saws has been
written on this subject.
document is one in a series of seven HAZARD CONTROLS concerning
wood dust control techniques listed below that are available
free upon request from NIOSH:
Control of Wood Dust from Horizontal Belt Sanders
Control of Wood Dust from Shapers
Control of Wood Dust from Automated Routers
Control of Wood Dust from Large Diameter Disc Sanders
Control of Wood Dust from Random Orbital Hand Sanders
Control of Wood Dust from Orbital Hand Sanders
Control of Wood Dust from Table Saws
principal contributors to this HAZARD CONTROLS are Jennifer
L. Topmiller, Division of Physical Sciences and Engineering,
and Jerome P. Flesch, Education and Information Division,
document is in the public domain and may be freely copied
or reprinted. NIOSH encourages all HAZARD CONTROLS be made
available to all interested employers and workers.
Publication #: 96-127
more information about these or other occupational safety
and health concerns, call toll free: 1-800-35-NIOSH
Disclaimer and Reproduction Information: Information in
NASD does not represent NIOSH policy. Information included in
NASD appears by permission of the author and/or copyright holder.