JET 719100 Use and Care Manual download pdf (Page 15)

Put a dimple in the stock with an awl or nail, or

use a spring-loaded automatic center punch.

2. Extremely hard woods may require kerfs cut

into the ends of the stock (Figure 20) using a

band saw, so the wood will accept the spur

center and the live center.

Figure 20

3. Drive the spur center about 1/4” into the

workpiece, using a wood mallet or dead blow

hammer as shown in Figure 21. Be careful that

you do not split the workpiece. Never use a

steel face hammer and never drive the

workpiece onto the spur center while it is

mounted in the lathe spindle.

Figure 21

4. Make sure the headstock is locked to the

Lathe bed.

5. Clean the tapered end of the spur center and

the inside of the headstock spindle.

6. Insert the tapered end of the spur center (with

the attached workpiece) into the headstock

spindle.

7. Support the workpiece while bringing the

tailstock into position about 1” away from the

end of the workpiece. Lock the tailstock to the

bed.

8. Advance the tailstock spindle with the

handwheel in order to seat the live center into

the workpiece. Use enough pressure to secure

the workpiece between the centers so that it

won’t fly off, but do not use excessive

pressure.

9. Tighten the spindle locking handle.

The tailstock ram is capable of

exerting excessive pressure against the

workpiece and the headstock. Apply only

sufficient force with the tailstock to hold the

workpiece securely in place. Excessive

pressure can overheat center bearings and

damage both workpiece and Lathe.

10. Move tool support into position. It should be

parallel to the workpiece, just below the

centerline and approximately 1/8" to 1/4" from

the corners of the workpiece to be turned, as

in Figure 22. Tighten support base to Lathe

bed.

Figure 22

11. Rotate workpiece by hand to check for proper

clearance.

12. Start lathe at lowest speed and bring it up to

the appropriate RPM for the size of workpiece

used. Consult the machine’s digital readout.

11.3.2 Cutting Techniques

Roughing Out

1. Begin with a large roughing gouge. Place the

tool on the tool support with the heel of the tool

on the surface to be cut.

2. Slowly and gently raise tool handle until cutting

edge comes into contact with the workpiece.

3. Beginning about 2” from the tailstock end of

the workpiece, roll the flute (hollowed-out

portion) of the tool in the direction of the cut.

See Figure 23. Make long sweeping cuts in a

continuous motion to rough the piece down to

a cylinder.

4. Keep as much of the bevel of the tool as

possible in contact with the workpiece to

ensure control and avoid catches. NOTE:

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JET 719100 Use and Care Manual Page 15

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