JET 719100 Use and Care Manual download pdf (Page 19)

and pointed toward the four o'clock position, as

shown in Figure 28.

Figure 28

6. Use the left hand to control cutting edge of

gouge, while right hand swings tool handle

around toward your body (Figure 28). The flute

should start out facing top of workpiece, and

rotate upward as it moves deeper into the bowl

to maintain a clean even curve. As the tool

goes deeper into the bowl, progressively work

out toward the rim. It may be necessary to turn

the tool support into the piece as you get

deeper into the bowl.

(NOTE: Try to make one, very light continuous

movement from the rim to the bottom of the

bowl to ensure a clean, sweeping curve

through the piece. Should there be a few small

ridges left, a light cut with a large domed

scraper can even out the surface.)

7. Develop wall thickness at the rim and maintain

it as you work deeper into the bowl (Once the

piece is thin toward the bottom, you cannot

make it thinner at the rim). When the interior is

finished, move the tool support to exterior to

re-define bottom of bowl. (General rule of

thumb: the base should be approximately 1/3

the overall diameter of the bowl).

8. Work the tight area around faceplate or chuck

with 1/4" bowl gouge.

9. Begin the separation with a parting tool, but do

not cut all the way through yet.

Sanding and Finishing

1. Remove the tool support and adjust lathe

speed to approximately 500 RPM. High speed

can build friction while sanding and cause heat

check in some woods.

2. Begin with fine sandpaper (120 grit) and

progress through each grit, using only light

pressure. Coarser sandpaper tends to leave

deep scratches that are hard to eliminate. Use

power-sanding techniques to avoid concentric

sanding marks around your finished piece.

Avoid rounding over the rim and foot with

sandpaper; try to keep details crisp. Finish

sanding with 220 grit.

3. Remove sanding dust with tack rags or

compressed air and, with lathe turned off,

apply first coat of finish. Let stand for several

minutes, wipe off excess. Allow to dry before

sanding again with 320 or 400 grit sandpaper.

4. Turn lathe back on and continue the

separation cut almost all the way through the

base. Stop at about 3" and use a small fine

tooth saw to separate the bowl from the waste.

Apply second finish coat and allow to dry before

buffing.

12.0 Maintenance

12.1 General maintenance

Periodically inspect lathe for loose fasteners, worn

electrical cables, proper belt tension, belt wear, or

any other situation that might affect operation or

create a safety risk.

Wipe down the lathe after each use, and blow out

chips and dust using compressed air (wear eye

and respiratory protection!).

Periodically apply a light coat of oil to headstock

spindle, tailstock quill, bed surface, and tool rest

post. Protect the bed from rust by applying paste

wax or a commercially available rust protectant.

Bearings are permanently lubricated and sealed.

They do not require further lubrication.

12.2 Motor Brushes

Periodically inspect the two carbon brushes located

at each side of the motor. If brushes need

replacing, replace both at the same time.

A heavily worn or damaged

brush, if allowed to remain, may eventually

cause damage to internal motor elements.

1. Disconnect lathe from power.

2. Unscrew cap (Figure 29) using a screwdriver

or coin, and withdraw brush.

3. Inspect brush. Replace brush if any of the

following are seen: Brush is worn 1/4" (6mm)

or more, collapsed spring, broken lead in

spring, abnormal discoloration, signs of

breakage, burning or crumbling.

4. Reinsert brush, or install new one, and screw

in cap.

5. Repeat inspection for brush on opposite side

of motor.

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JET 719100 Use and Care Manual Page 19

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