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17
To Shape the Outside of a Bowl
Odd shaped burls, crotches and other irregular
shaped blanks require special preparation before
mounting in a chuck, or onto a faceplate.
1. 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.
Figure 21