PREPARING THE BLADE
Cutting the Blade: Cut the saw blade to length. Use the blade shear if it is available. Using the blade shear will
insure that the blade ends are flat, square and smooth.
Tooth Spacing: In fine pitched bands, one or more teeth on each side of the cut must be removed by grinding, so
that the cross section of the weld area of the band is uniform. This will also insure proper tooth spacing at the weld
area and that the set pattern of the teeth will be retained.
Using the Blade Shear.
If snips are used to cut blade,
grind ends square as shown.
If the Blade Shear has not been used to cut the blade, square the ends of the blade
before welding. Grind both ends of the saw blade in one operation as shown in the
sketch. Hold the ends so that the teeth point in opposite directions. Regardless of
the angle of grinding, the two ends will match perfectly when turned over.
Clean the band: Use No. 120 grit emery cloth or equivalent for this operation. Care must be taken so that the teeth
are not touched with the emery cloth, because the set or sharpness of the teeth could be damaged. The part of
each end of the band that comes into contact with the inserts must be sanded. Any dirt, oil, oxide or scale that is
not removed will prevent good electrical contact. The oxide on Dart Blade must be removed.