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18
To Shape Outside of Bowl
1. Odd shaped burls, crotches and other
irregular shaped blanks require special
preparation before mounting in a chuck, or
onto a faceplate. Remove the bark, if there
is any, from what appears to be the center of
the top of workpiece.
2. Drive spur center into the top of workpiece
with a wood mallet.
3. Slip spur center into headstock taper and
bring the tailstock, with a live center into
position. Lock tailstock to bed and advance
spindle in order to seat the cup center into
workpiece, see Figure 22. Tighten quill
lock.
4. Position tool support just below the
centerline and about 1/4" from the
workpiece. Note: For larger outboard
turning, an optional outboard turning stand is
used to place the tool support, see your JET
distributor.
5. Turn workpiece by hand to ensure proper
clearance.
6. Start lathe at lowest speed and bring it up to
the maximum safe speed for the size of
work to be turned, see Figure 7 on page 10.
If the machine starts to vibrate, lower the
speed until vibration stops.
7. Rough out the outside of the bowl with the
1/2" deep fluted bowl gouge, holding the tool
firmly against your hip. For best control,
use your whole body to move the gouge
through the workpiece.
8. As the bowl takes shape, work on the
bottom (tailstock end) to accomodate
attaching a face plate, see Figure 22.
9. Turn a short tenon (about 1/8" long) the size
of the hole in the faceplate, see Figure 22.
This will allow centering the workpiece when
the faceplate is attached. Note: If you
plan to use a chuck, turn a tenon of
appropriate length and diameter to fit your
chuck.
10. Stop the lathe, remove workpiece and attach
face plate, or chuck.
11. Finish turning the outside of bowl with 1/2"
or 3/8" bowl gouge. Leave additional
material at base of bowl for support while
turning interior. This will be removed later.