3.Start the saw using the pushbutton.
4.Turn the speed setting handwheel (Figure
14)to the required speed. Turning the handwheel clockwise increases speed. Turning counterclockwise decreases speed.
Rotate the speed setting handwheel only when the band saw is running.
Evaluating Cutting Efficiency
The best way to determine whether the blade is cutting efficiently is to observe the chips formed by the cutting.
•If the chip formation is powdery, then the feed is much too light, or the blade is dull.
•If the chips formed are curled, but colored – blue or straw colored from heat generated during the cut – then the feed rate is too high.
•If the chips are slightly curled and are not colored by heat – the blade is sufficiently sharp and is cutting at its most efficient rate.
Welder Operation
Wear eye protection while operating the welder. Use care when handling the blade after welding to avoid burns.
The welding procedure involves the following steps: Shearing the blade, grinding teeth to allow for the weld area, the actual welding, inspection of the blade, annealing, grinding and a final inspection of the blade. This procedure can be accomplished using the shear and welder assemblies on your band saw. Proceed as follows:
Shearing
Cut the blade to the longest length needed for the band saw. Using the shear to cut your blade will ensure that the blade ends are cut flat, square and smooth.
1.Place the blade in the shear as shown in Figure 15. Make sure the blade is held square with the shear knife, so that the cut will be square with the blade.
2.Position the blade so that the cut is made at a place that allows for uniform spacing of the teeth. See Figure 16.
3.Push down the handle.
Figure 15
Figure 16
16