-24-
For Machines Mfd. Since 10/21
South Bend Tools
Model SB1122
O P E R A T I O N
Workpiece Inspection
Before cutting, inspect the material for any of
the following conditions and take necessary
precautions:
•
Small or Thin Workpieces:
Small or thin
workpieces may be damaged during
cutting—avoid cutting these workpieces
if possible. If you must cut a small or thin
workpiece, attach it to or clamp it between
larger scrap pieces that will both support the
workpiece through the cut. Some thin sheet
metals will not withstand the force from this
bandsaw during cutting instead, use a shear,
nibblers, or sheet metal nippers to cut these
pieces.
•
Unstable Workpieces:
Workpieces that
cannot be properly supported or stabilized
with the vise should not be cut on this
bandsaw. Examples are chains, cables,
workpieces with internal or built-in moving
or rotating parts, etc.
•
Material Hardness:
Always factor in the
hardness of the metal before cutting it.
Hardened metals will take longer to cut, may
require lubrication, and may require a different
type of blade in order to efficiently cut them.
•
Tanks, Cylinders, Containers, Valves, Etc.:
Cutting into containers that are pressurized
or contain gases or liquids can cause
explosions, fires, caustic burns, or machine
damage. Avoid cutting any of these types of
containers unless you have verified that the
container is empty and it can be properly
supported during a cut.
•
Magnesium:
Pure magnesium burns easily.
Cutting magnesium with a dull blade can create
enough friction to ignite the small magnesium
chips. Avoid cutting magnesium if possible.
Selecting Blades
Selecting the right blade for the cut requires a
knowledge of various blade characteristics.
A.
Kerf:
Amount of material removed by blade
during cutting.
B.
Tooth Set:
Amount each tooth is bent left or
right from blade.
C.
Gauge:
Thickness of blade.
D.
Blade Width:
Widest point of blade mea-
sured from tip of tooth to back edge of blade.
E.
Tooth Rake:
Angle of tooth face from line
perpendicular to length of blade.
F.
Gullet Depth:
Distance from tooth tip to bot-
tom of curved area (gullet).
G.
Tooth Pitch:
Distance between tooth tips.
H.
Blade Back:
Distance between bottom of
gullet and back edge of blade.
I.
Blade Pitch or TPI:
Number of teeth per
inch measured from gullet to gullet.
Blade Terminology
A
B
C
D
E
F
G
H
I
Figure
Figure 23. . Bandsaw blade terminology.
Bandsaw blade terminology.
