When cutting spiral flutes you can only
use the spiral indexing plate and never try
to use the lathe indexing plate, as this will
not allow the spindle to rotate.
The spiral cutting indexing plate fits into
the Morse taper of the headstock. Clean
both the spindle hole and the taper shaft of
the indexing plate and push into the head
stock spindle hole. Test that the plate is
fitted correctly and that the taper is
holding by trying to twist it.
To rotate the indexing plate, remove
the clamping screw, rotate the
indexing plate to the required hole, and
refit the screw.
Fit the gear arm as shown.
Swivel the gear arm down as shown.
Rear of spiral indexing plate
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