Rub Collars - Grizzly G5912Z Owner's Manual

Rub Collars

Rub collars are used when shaping curved or
irregular workpieces, such as arched doors or
round table tops. Rub collars also limit the depth
of your cut.
There are two types of rub collars—solid and
ball-bearing. We recommend against the use of
solid rub collars. Grizzly carries an extensive line
of ball bearing rub collars designed for use with
Grizzly shapers. See the current catalog for list-
ings.
Rub collars may be used in any of the follow-
ing positions:
1. Rub collar below the cutter: When the rub
collar is used below the cutter as shown n
Figure 34, the progress of the cut can be
observed. However, any unintentional move-
ment may lift the workpiece into the cutter,
damaging your work and creating a danger-
ous situation. We DO NOT recommend this
type of setup!
Figure 34. Rub collar installed below cutter.
Whenever the cutterhead is above the
workpiece, or you can see cutterhead spin-
ning during use, you must take extreme
caution to keep your hands away from the
cutterhead. Failure to do so may cause
serious personal injury.
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2. Above the cutter: When the rub collar is
used above the cutter as seen in Figure 35,
the cut cannot be seen. This offers some
advantage: the stock is not affected by slight
variations in thickness and accidental lift-
ing will not damage the workpiece. If lifting
occurs, simply correct the mistake by repeat-
ing the operation.
Figure 35. Rub collar installed above cutter.
3. Between two cutters: Using a rub collar
between two cutters, as in Figure 36, has
the distinct advantage of performing two cuts
at once or eliminating the need to change
cutters for two different operations. Notice
that part of the edge is left uncut. The uncut
portion rides on the rub collar.
Figure 36. Rub collar between two cutters.
G5912Z/G7214Z Heavy-Duty Shaper