13
OPERATION
WARNING:
Do not attempt to operate this tool until you have read thoroughly and
understand completely all instructions, safety rules, etc. contained in this manual.
Failure to comply can result in accidents involving fire, electric shock, or serious personal
injury. Save this operator’s manual and review frequently for continuing safe operation
and instructing others who may use this tool.
BASIC OPERATION
WARNING:
Always wear safety goggles or safety glasses with side shields during
power tool operation or when blowing dust. If operation is dusty, wear a dust mask.
To be efficient and work as designed, your tools should be kept sharp. Dull tools will
cause accidents.
Bench Grinders are ideal for sharpening tools such as chisels, planer blades, scissors,
etc., and for removing rust or corrosion. Grinders remove material rapidly so pressure
is the key to efficient grinding.
The proper way to sharpen a tool and avoid overheating is:
■
Keep the object in constant motion, moving it at an even pace.
■
Never force a tool against the grinding wheel.
■
Keep the tool cool by using either a cooling tray or a pan of water.
■
The grinding wheel should rotate “into” the object being sharpened.
Note: Excessive pressure may damage the tool, cause the motor to overheat, and
prematurely wear down the grinding wheel.
The following recommendations will help you sharpen specific tools:
TWIST DRILL BITS
Drill bits are best sharpened on a sharpening jig (available at most hardware stores).
Begin on one side of the point at the existing angle, then twist the bit while maintaining
contact with the 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 work rest has a V-groove angled to
fit most drill bits.
LAWN MOWER BLADES
Lawn mower blades are usually sharpened on only one edge and dressed up slightly on
the other. Perform this sharpening process on both cutting ends of the blade. After
sharpening, be sure to balance the blade by removing additional material.
CAUTION:
An unbalanced lawn mower blade may cause excessive vibration which
will damage the lawn mower.
