Instruction manual

14
COPY TURNING
1. Take the template object which
is to be copied and mark
diagonal lines on each end in
order to show the centre point
before installing it in the copy
stock position. Pierce the
template with the copy spindle
spur (8) and then tighten both
ends equally to hold the
template as shown in Fig 11.
2. Set the new workpiece in the
lathe by marking the centre
point as above and securing in
position between the head and
tailstock as shown in Fig 12.
3. Begin turning by roughing off the
workpiece until it is cylindrical and
ready for fine turning.
4. Check that the copy follower is
resting on the template object
and will follow the outline profile
as the assembly is moved along
as shown in Fig 13.
5. Set the tool post such that the
cutting tool is just level with the
axis of the lathe and workpiece
and begin turning progressively
from one end, advancing the tool
steadily. Take small cuts to assess
the progress and check that the
copy follower runs smoothly.
6. Progress slowly to ensure the copy
follower roller/pin remains in
contact with the template object
at all times. Take care that the
follower does not bounce on
sudden shape changes.
Different tools may be used according to the desired shape of the
workpiece; e.g, round-nosed, square-nosed, spear point, etc. These may
need changing during the operation.
Fig 11
Fig 12
Fig 13