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Using the Grinder
Warning: The grinding wheel can fly apart and cause injury. Grinding wheels must always
be checked for cracks or imperfections. This is done with the "ring test". Tap the wheel
gently near the outer rim with the handle of a screwdriver. You should hear a clear bell-
like ring. If a dull thud occurs, do not use the wheel. The wheel may be damaged and
could come apart during operation.
Warning: Never put a grinding wheel on the buffer side of the tool. Never use
any accessory not specifically designed for this machine. Never attempt to use
a wire brush, abrasive flap wheel, or sanding disc on this Grinder / Buffer.
1.
Always bring the workpiece into the wheel gently, without jarring.
2.
The workpiece will quickly become heated, therefore frequent quenching in water is required.
3.
When grinding high speed steels such as drill and tool bits, avoid high temperature buildup as this
can effect the temper of the steel.
4.
For small workpieces such as drill bits or chisels, avoid applying pressure to the wheel at a high
angle that could cause the workpiece to become lodged between the tool rest and the wheel.
Using the Buffer
1.
Apply buffing wax in stick form to the moving wheel before buffing metals. This
enhances the buffing and polishing process.
2.
If the buffing wheel pads become loaded with buffing compound replace them for better
results.
Note: New wheels frequently are not true and during operation will often
become grooved, glazed (build up), out of round, or misshapen. You will
need a grinding wheel dresser for this operation. Dressers are available
from Harbor Freight Tools.
1. Stand to the side of the wheel for this operation.
2.
If the wheel is new let it run for a minute with no load. If the wheel runs straight and true,
you will not need to dress it prior to operation. If it does not, proceed with the following
instructions
3.
If you are using a "pistol grip" dresser, grip the handle firmly with one hand and the arm of
the dresser with the other. Allow the wheel to reach full speed. Use the tool rest to
support your hand and the dresser, and evenly apply the dresser to all surfaces of the
wheel. The wheel can be dressed in a few minutes.
4.
If you are using an "inline" dresser, hold the handle firmly, put the dresser on the tool rest
so that its wheels can move freely (i.e., the exposed part of the wheel should be facing
up). Let the wheel reach full speed and apply the dresser evenly to all surfaces.
SKU 36127
Operation
Maintenance
Dressing the Grinding Wheel
Page 5
Rev 03/02
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