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ANNEALING (Bi-Metal)
Set up blade for annealing as mentioned above for carbon blades steps 1 & 2.
Heat the band slowly by jogging the
annealing switch button until the weld
just begins to emit light (this would be
the dullest red color) or minute puff of
smoke. The desired color may not be
visible in normal room light. Always
shade the weld area with your hand.
Cool the weld quickly by releasing the
annealing
button.
Repeat
this
operation 4 or 5 times.
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NOTE: This procedure should be followed both before and after grinding
BI-METAL Blades.
GRINDING THE WELDED BLADE
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WARNING
Keep hands away from rotating grinding wheel. When not in use make, sure
wheel is covered with built in cover
After welding, the blade must be dressed to remove excess metal or flash from the weld.
Grind the welded area down to the same thickness as the rest of the band. Handle the blade
carefully.
Grind Carefully: do not hit the teeth; or grind deeper than the thickness of the blade; or
overheat the weld area. Be sure to remove flash from the back edge of the blade. Any flash
or “stub” teeth that project beyond the normal set or height of the other teeth must be
ground off.
Anneal the welded area that was ground again. Anneal 2 or 3 times using a lower
temperature. (Just as area starts to emit light)
