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Model W1825 (For Machines Mfd. Since 07/15)
O
PE
R
ATIO
NS
Carbon Steel: These blades are differentially heat treated
to provide hard teeth that will hold an edge, and yet be
flexible in the back.
Carbide Tooth: Extremely hard carbide is either welded
onto or impregnated into the carbon steel blades,
providing superior edge-holding characteristics (see
Figure.55
).
Blade Material
Bandsaw blades must meet two requirements: flexibility
and hardness. The flexibility of a blade allows it to travel
on the wheel as a band, while hardness allows the teeth
to cut and hold an edge. Modern materials technology has
allowed bandsaw blades to meet these requirements in
various ways.
Tooth Set
Two common tooth sets for wood bandsaw blades are
alternate and raker
.
Each different type of tooth set
removes material in a different manner, leaving cuts with
different characteristics (see
Figure.57
)
.
Alternate: An all-purpose arrangement where the teeth
are bent evenly left and right of the blade.
Raker: Three teeth in a recurring group—one bent left,
one bent right, and then one that is not bent.
The raker
set is ideal for most contour cuts.
Standard or Raker: Equally spaced teeth set a “0” rake
angle. Recommended for thinner workpieces and general
use.
Hook or Claw: Wide gullets (round or flat), equally spaced
teeth, positive rake angle, and fast cut with good surface
finish.
Skip or Skip Tooth: Wide, flat gullets, a "0" rake angle,
equally spaced teeth, and recommended for thick wood
cutting.
Tooth Type
The most common tooth types for wood blades are shown
and described below (see
Figure.58
).
Bimetal Blade: A strip of high-speed tool steel is precision
welded to a flexible carbon blade, then teeth are ground
into the blade to provide good edge-holding qualities for
blades taking a lot of abuse (see
Figure.56
).
Carbon Steel
Carbide Impregnated Steel
Figure.55.
Carbide blade composition.
High Speed Steel
Weld
Carbon Steel Blade
Figure.56.
Bimetal blade composition.
Standard (or Raker)
Hook (or Claw)
Skip (or Skip Tooth)
Figure.58.
Typical tooth types.
Figure.57.
Typical woodcutting bandsaw
blade tooth sets.
Alternate
Raker
Summary of Contents for W1825
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