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3.
Be sure that the cutting lip is straight across the face of the wheel before
beginning each stroke
4.
When the drill contacts the wheel, push the drill shank downward and to the left
at a slight angle. At the same time, rotate the drill so the other lip is just visible.
5.
Repeat this process on the other lip to sharpen the entire twist drill
Consider using a sharpening jig if you anticipate sharpening numerous bits.
SHARPENING WOOD CHISELS & PLANE IRONS
Sharpening chisels and irons on the bench grinder will produce razor sharp
hollow ground bevels, which must be followed by honing on a whetstone.
Practice the steps below with the power off before attempting to sharpen a
chisel or plane iron.
1.
The chisel cutting edge must be free of nicks and be 90° to the chisel edge.
With the tool rest flat, lightly dress the cutting edge if nicks are present or
it's out of square.
2.
Adjust the tool rest's angle between 25 to 30 degrees in relation to the grinding
wheel's face. Rest the chisel on the angled tool rest and move it laterally across the
face of the wheel.
3.
Occasionally cool the workpiece in water to maintain its hardness.
4.
Continue grinding the cutting edge and bevel until the bevel length is
roughly twice the thickness of the chisel. Remove only the material
necessary to achieve the desired bevel angle with a sharp and square
cutting edge.
5.
This process produces a sharp hollow ground bevel with a small amount of
'wire' burr. Remove this with a final honing on a whetstone.
REFURBISHING SCREWDRIVER TIPS
Screwdriver tips often get worn or bent out of shape and must be reshaped by
grinding to perform properly.
1.
Select a flat-head screw with a slot the same width as the screwdriver
blade tip.
2.
Grind screwdriver tip square and remove all gaps, nicks and twists in the
screwdriver blade. Apply only light pressure to the blade while moving it
back and forth across the grinding wheel face.
14
6 in. Bench Grinder
For technical questions call 1-800-665-8685
V4.0
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