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G2891 Lathe Copy Attachment -15-
Basic Operation
Master Spindle or Template
Stylus
Move from high points towards
areas with greater depth of cut
Figure 12. Recommended direction of stylus travel.
To make a copy of an existing spindle or tem-
plate:
1. To make identical copies from a master
spindle it is necessary to first make certain
the cutting tool and the follower stylus are
aligned with their respective centerlines.
See Figure 13. This can be done most eas-
ily by mounting turning squares with identi-
cal dimensions on the lathe centers and on
the Copy Attachment centers. Move the fol-
lower stylus so it just touches the square.
Adjust the cutting tool in or out of the hold-
er so it also just touches the square.
Remove the turning squares.
2. Mount the workpiece between the lathe
centers.
3. Move the carriage with the longitudinal
handwheel until the tip of the cutter is pre-
cisely located at the point on the workpiece
where you want the turning action to begin.
See Figure 12.
Lathe Centerline
Copy Attachment
Centerline
Cutting Tool
Follower Stylus
Figure 13. Stylus/Cutting Tool alignment.
4. If you are using a template, spread the tem-
plate-mounting brackets apart to accom-
modate the template. Note that you will
have to drill holes in your template to mount
it to the template mounting brackets.
Locate the position of the template on the
Copy Attachment main body so the profile
will line up with the desired location of the
profile on the workpiece. If you followed
Step 2, the stylus should line up at the start-
ing point of the template.
5. Adjust the crosswheel until the stylus
comes in contact with the template in its
desired position.
6. If duplicating an existing spindle, mount the
spindle between the master spindle carri-
ers. First position and lock the head center
so the existing spindle profile will line up
with the intended profile area on the copy.
Use a 13mm wrench to loosen and tighten-
ing the mounting fasteners. Slide the tail
center so it is just outside of the master
spindle, and lock in place. Hold the master
spindle in position and tighten the hand
knob located on the tail center.
Make sure that the workpiece is firmly seat-
ed between centers. If it becomes unseated
from the lathe at operating speed, the work-
piece will be propelled from the machine.
Serious personal injury will occur to anyone
in the path of the workpiece.