Ace 27201 - Operation; Maintenance

OPERATION
ALWAYS WEAR EYE PROTECTION WHEN USING THE GRINDER.
Keep a steady moderate pressure on the workpiece and keep it moving at an even pace for smooth grinding. Pressing too hard
overheats the motor and prematurely wears down the grinding wheels, so take your time. Note the original bevel angle on the
item to be sharpened and try to maintain this shape. The grinding wheel should rotate into the object being sharpened. Keep a
tray filled with water and dip your work into it regularly to prevent overheating. Overheating can weaken metals.
SCISSORS
If possible, take the scissors apart to make the sharpening
operation easier and safer. Remove material only from the
outside surface and work from the heavy end of the blade
toward the tip.
KNIVES
Remove metal from both faces of most Knives, working from the heavy
end of the blade toward the tip.
SCREWDRIVERS
The end of a properly sharpened screwdriver will be a perfect rectangle, absolutely flat and perpendicular to the center line of
the shank. The two sides and two faces will taper outward from the edge of the shoulder or shank. They should be flat with
intersecting faces perpendicular. Hold each face of the screwdriver against the wheel to true it up, then ease the end straight
into the stone to grind it true.
TWIST DRILL BITS
Drill bits are best sharpened on a sharpening Jig, available
at most hardware stores, but can be “dressed up” on your
bench grinder. Begin on one side of the point at the existing
angle, then twist the bit while maintaining a constant angle
with grinding surface. Sharpen only the tip. This technique
requires considerable practice, so take your time and make
a few “dry runs” first with the grinder off. Be sure to maintain
the original cutting edge angle as this is important to the
efficiency of your bits. One tool rest has a V-groove that is
correctly angled for most drill bits.
LAWN MOWER BLADES
Lawn mower blades are usually sharpened on only one side and dressed up slightly on the other. After sharpening, be sure to
balance the blade by removing additional material from the heavy end. There are a number of inexpensive cono balances on
the market for this purpose. Unbalanced blades can cause serious crank shaft damage to your lawn mower. Always remove
spark plug wires from the mower before servicing the blades to prevent accidental starting.
MAINTENANCE
WARNING: For your own safety, turn switch “OFF” and remove plug from power source outlet before adjusting and maintaining
your bench grinder. If power cord is worn, cut, or damaged in any way, have it replaced immediately.
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. While any of the other conditions can be remedied with a dressing
tool (available at most hardware stores), new wheels sometimes require dressing to make them round.
WHEEL REPLACEMENT
lf you must replace a wheel be sure to obtain one with a safe rated speed at least as high as the ‘NO LOAD’ RPM marked on
your grinder’s nameplate and with a 5/8" center hole. 8" diameter wheel should be a maximum of 1" wide. Test new wheels for
cracks and maintain the existing sequence of retaining hardware. Be sure the tool is unplugged before attempting repairs.
Your bench grinder will accept most polishing and buffing wheels available at dealers and hardware stores.
WARNING:
The use of any other accessories is not recommended and may result in serious injury.