Tooth Set
Three common tooth sets are standard, wavy, and raker (see Figure 30), each removing mate- rial in a different manner to make the kerf in the workpiece.
Alternate | Wavy | Raker |
Figure 30. Bandsaw tooth sets.
Alternate: An all-purpose arrangement of bend- ing the teeth evenly left and right of the blade. Generally used for milder metals.
Wavy: Generally three or more teeth in a group that are bent one way, followed by a non-set tooth, then another group bent the other way. Recommended for straight cuts in thin metals or thin-wall tubing.
Raker: Three teeth in a recurring group—one bent left, next one bent right, and then a non-set tooth. The raker is ideal for most contour cuts.
Tooth Type
The most common tooth types are described below and illustrated in Figure 31.
Standard or Raker: Equally spaced teeth set a "0" rake angle. Recommended for all purpose use.
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Figure 31. Bandsaw blade tooth types.
Variable Pitch (VP): Varying gullet depth and tooth spacing, a "0" rake angle, excellent chip removing capacity, and smooth cutting.
Variable Pitch with Positive Rake: Varying gul- let depth and tooth spacing, a positive rake angle, better chip formation, and aggressive cutting.
Hook or Claw: Wide gullets (round or flat), equal- ly 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
G0659 9" x 14" Vertical |
