Grizzly G2891 - Manual (Page 13)

G2891 Lathe Copy Attachment -11-
Final alignment of the lathe axis and the copier
axis must be precise to ensure that they are both
parallel. Before executing the following steps,
mount a turning square between the centers of
your lathe.
The turning square should be as long as the
maximum center-to-center distance of your lathe
to ensure the greatest degree of accuracy. It is
critical that the turning blank is perfectly centered
and as near-perfectly straight as possible.
1. Move the carriage to one end of the Copy
Attachment and crank the cross-feed hand-
wheel until the cutting tool nearly touches
the side of the blank. See Figure 6.
Final Alignment
NOTICE
If the carriage is difficult or impossible to
move along the bed, see Gib Adjustment in
next section.
Figure 6. Aligning lathe to copy attachment.
very carefully adjust the bed until the cutter
is equal distant from the turning square at
both ends of its longitudinal movement.
4. Continue to test the cutter against the turn-
ing square until it is evenly spaced in rela-
tion to the turning square along its entire
length.
5. Once adjustments are complete, ensure
that all mounting bolts are securely tight-
ened.
Figure 7. Using precision spacer.
Avoid wearing loose-fitting clothing, jew-
elry, or other personal items that could be
caught in moving parts of the machinery
while adjusting or operating this machine.
Serious personal injury could result if this
warning is ignored.
2. Without changing the position of the turn-
ing blank, slowly turn the longitudinal feed
handwheel to move the carriage toward
the opposite end of the lathe. Use a feeler
gauge or another precision spacer when
starting out to ensure consistent distance
between the cutter and the turning square.
See Figure 7 .
3. If the cutter does not maintain a consistent
distance from the turning square at both
ends of the cutter’s longitudinal movement,
or along it’s length, you may have to loosen
the bed from its mounting brackets and