Bi-Metal Blades

1.Heat the blade slowly by jogging the annealing switch button until the weld just begins to emit

light (dull red color). The desired color may not always be visible in normal room light - always shade the weld area.

2.Cool the weld quickly by releasing the annealing button.

3.Follow this procedure before and after grinding bi-metal blades.

Blade Grinding

LIS: WARNING

Keep hands away from rotating grinding wheel!

Failure to comply may cause serious injury! Always heed the indicator light - when glowing, it warns that the grinder motor is running.

After annealing, the blade must be ground to remove excess metal or flash from the weld. With

the teeth facing out, grind the weld carefully. Do not hitthe teeth, grind deeper than the weld, burn, or overheat the weld area. Be sure to remove flash

from the back edge of the blade. Any flash or "stub" teeth which project beyond the normal set or height of the other teeth must be ground off.

Secondary Annealing

Anneal the weld 2-3 times again after grinding.

Welder Clean-Up

It is important that the welder jaws be kept clean at all times. The jaws and inserts must be wiped or scraped clean after every weld. Doing this will ensure better welds by:

1.Holding proper alignment.

2.Preventing flash from becoming embedded in the blade.

3.Preventing shorts or poor electrical contact.

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Jet Tools VBS-2012 manual Blade Grinding, Secondary Annealing, Welder Clean-Up