Jet JWS-10, Operating Instructions And Parts Manual

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Move the tool left/right to ensure even wear across
the wheel.
Narrow or convex cutting edges require less
pressure.
Use both hands to stabilize the tool/jig during the
sharpening process.
9.3 Tool honing
See Figure 9-3.
Honing is used to remove burrs from the sharpening
process, and to develop a very fine edge on a tool.
It is recommended to rub a very light application of
machine tool oil onto the honing leather before
proceeding.
Apply honing compound to the honing wheel. A
piece of card can be used to spread it evenly on the
wheel as the wheel is rotating on slow speed. If
honing performance begins to diminish, reapply
compound.
For quick burr removal, alternately hone both sides
of the cutting edge.
Always hone with wheel rotation. See Figure 9-3.
Do not attempt to hone against
the wheel (A, Figure 8-3); the tool will catch and
may be forced from the hand. Also the honing
wheel will be damaged.
Figure 9-3
10.0 User Maintenance
For safety, turn the switch to OFF and remove plug
from the power source outlet before adjusting and
maintaining the wet sharpener. If the power cord is
worn, cut or damaged in any way, have it replaced
immediately.
10.1 Care of grinding wheels
In normal use, grinding wheels may become
cracked, grooved, rounded at the edges, chipped,
out of true or loaded with foreign material.
Cracked wheels should be replaced
IMMEDIATELY. The other conditions can be
remedied with a dressing tool. See
sect. 9.1.
Do not store a wet stone in freezing temperatures.
When machine is not in use, remove water tank. The
stone wheel should not sit idle in water for long
periods of time.
Frequently empty the water tank, and refill with fresh
water. Clean out debris or shavings.
10.2 Wheel replacement
Before replacing a grinding wheel, perform a “ring
test” on the replacement wheel as follows. The
wheel must be completely dry.
1. Loop a piece of string through the grinding
wheel hole and suspend the wheel by holding
up the string.
2. Tap the wheel with a piece of scrap wood or a
wooden dowel.
3. A good wheel will "ring"; a defective wheel will
"thud". Discard any wheel that does not "ring".
An internal defect may not be apparent by visual
inspection alone. The ring test may identify an
internal crack or void.
IMPORTANT: If you replace a wheel, obtain one
with a safe rated speed at least as high as the NO
LOAD RPM of the Wet Sharpener. See sect. 4 for
wheel specifications.
10.3 Commutator brush inspection
To maintain motor efficiency, inspect the two carbon
brushes every six months or more frequently if
machine is heavily used. Stalling or loss of power
may be a symptom of worn carbon brushes. If one
brush is worn out, replace both at the same time.
Continued use of a damaged or
worn brush may result in damage to motor
armature.
1. Unplug wet sharpener from power source.
2. Remove the drawer and the honing wheel.
3. Position wet sharpener on its side.
4. Loosen the switch box and pull it outward to
provide more space for turning the motor and
accessing both brushes. See Figure 10-1.