Grizzly g4003g Owner's Manual page 33

When the half-nut lever is engaged, the dial stops
turning. By carefully engaging the half-nut as the
appropriate line or number passes by the indicator
mark, a thread can be re-entered for its next pass
of the cutter without wiping out the previous cut.
the thread dial chart listed in figure 32 shows
when to use the thread dial when cutting inch
threads. if a thread is divisible by 8, then you need
not use the thread dial. if cutting metric threads,
you cannot use the thread dial.
figure 32. thread dial chart.
Model g4003g (Mfg. since 4/08)
While other thread pitches may be achieved, the
g4003g is designed so that no gear changes are
needed for cutting inch threads.
however, you will have to move the feed direc-
tion lever to the direction of thread you want to
cut, and then move the feed rod lever to the right.
to get the needed threads in inches, you will
then use the standard thread chart (figure 33)
to determine which positions to move the quick
change levers to.
figure 33. standard thread chart.
example:
the desired threads are 11 threads per inch,
move the quick change gearbox levers to posi-
tions b and 5. As the thread dial chart shows,
engage the half-nut when the thread dial reads 1
or 3 and begin your first cut. When the cut is com-
plete, disengage the half-nut and return the car-
riage manually to the beginning of the cut. Watch
the dial. When the 1 or the 3 on the dial comes
around to the indicator mark, engage the half-nut.
Begin your second pass. repeat this process until
the desired depth of cut is achieved.
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