Figure 12-8.Combination punch, shear, and coper.
manufacturers manual for detailed information
concerning the structure, operation, maintenance, and
repair of the individual machine.
One of the key parts of the vertical band saw is its
blade that must be sharp and accurately set to cut in a
straight line. The radius of the curve, or circle, to be
cut determines the size of the saw blade to be used.
Use a narrow blade to cut curves of small radii. A
l/8-inch blade will cut a l-inch curve; a 3/16-inch
blade, a 1 l/2-inch curve; a l/4-inch blade, a 2-inch
curve; and a 3/8-inch blade, a 2 l/2-inch curve;
provided, in each instance, the teeth have the correct
amount of set.
After turning on the power, see that the blade is
operating at full speed before you start a cut. It is
advisable to true up one face or edge of the stock
before taking a cut with the saw. Also, start the cut in
the waste stock and do not crowd or cramp the blade.
Keep the top guide down close to the work at all
times. When sawing curves or straight lines (outlines),
you guide the stock along the lines marked on the face
of the stock. When more than one piece is to be sawed,
several can be tack-welded together before sawing.
Tack-weld from the side on which the outline is
marked so the welds will be visible to the saw operator.
Be careful not to exceed the rated capacity of the
Do not force the material too hard against the
blade. A light contact with the blade permits easier
following of the line and prevents undue friction and
overheating of the blade.
By keeping the saw blade well sharpened, you
need to apply very little forward pressure for average
cutting. Move stock steadily against the blade, but no
faster than required to give an easy cutting movement.