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18
To Shape the Outside of a 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 the spur center into the top of the
workpiece with a wood mallet.
3. Slip the spur center into the headstock taper
and bring the tailstock, with a live center,
into position. Lock the tailstock to the bed
and advance the spindle in order to seat the
cup center into workpiece, see Figure 21.
Tighten the quill lock.
4. Position the tool support 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 the workpiece by hand to ensure
proper clearance.
6. Start the lathe at the lowest speed and bring
it up to the maximum safe speed for the size
of work to be turned, see Figure 6 on page
11. If the machine starts to vibrate, lower the
speed until the 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 accommodate
attaching a face plate, see Figure 21.
9. Turn a short tenon (about 1/8" long) the size
of the hole in the faceplate, see Figure 21.
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 the workpiece and
attach the face plate, or chuck.
11. Finish turning the outside of the bowl with
1/2" or 3/8" bowl gouge. Leave additional
material at the base of the bowl for support
while turning the interior. This will be
removed later.