The blade is held on the arbor by the arbor nut. A saw
is usually equipped with several throat plates,
containing throats of various widths. A wider throat is
required when a dado head is used on the saw. A dado
head consists of two outside grooving saws (which
are much like combination saws) and as many
intermediate chisel-type cutters (called chippers) as
are required to make up the designated width of the
groove or dado. Grooving saws are usually I/S-inch
thick; consequently, one grooving saw will cut a
1/8-inch groove, and the two, used together, will cut a
Intermediate cutters come in
Observe the following safety precautions when
operating the tilt-arbor table bench saw:
Do not use a ripsaw blade for crosscutting or a
crosscut saw blade for ripping. When ripping
and crosscutting frequently, you should install
a combination blade to eliminate constantly
changing the blade. Make sure the saw blade is
sharp, unbroken, and free from cracks before
using. The blade should be changed if it
becomes dull, cracked, chipped, or warped.
Be sure the saw blade is set at proper height
above the table to cut through the wood.
Avoid the hazard of being hit by materials
caused by kickbacks by standing to one side of
Always use a push stick to push short, narrow
pieces between the saw blade and the gauge.
Keep stock and scraps from accumulating on
the saw table and in the immediate working
Never reach over the saw to obtain material
from the other side.
When cutting, do not feed wood into the saw
blade faster than it will cut freely and cleanly.
Never leave the saw unattended with the power
Although the band saw (figure 3-3) is designed
primarily for making curved cuts, it can also be used
for straight cutting. Unlike the circular saw, the band
saw is frequently used for freehand cutting.
The band saw has two large wheels on which a
continuous narrow saw blade, or band, turns, just as a
belt is turned on pulleys. The lower wheel, located
below the working table, is connected to the motor
directly or by means of pulleys or gears and serves as
the driver pulley.
The upper wheel is the driven
The saw blade is guided and kept in line by two
sets of blade guides, one fixed set below the table and
one set above with a vertical sliding adjustment. The
alignment of the blade is adjusted by a mechanism on
the backside of the upper wheel. Tensioning of the
bladetightening and loosening-is provided by
another adjustment located just back of the upper
Cutoff gauges and ripping fences are sometimes
provided for use with band saws, but youll do most
of your work freehand with the table clear. With this
type of saw, it is difficult to make accurate cuts when
gauges or fences are used.
The size of a band saw is designated by the
diameter of the wheels. Common sizes are 14-, 16-,
20-, 30-, 36-, 42-, and 48-inch-diameter wheel
machines. The 14-inch size is the smallest practical
band saw. With the exception of capacity, all band
Figure 3-3.Band saw.