BANDSAW OPERATIONS - OD1646 - LESSON 1/TASK 1
(2) Curve Sawing.
Curve sawing is performed either by using the disk
cutting saw attachment or by hand guiding the workpiece.
FIGURE 17.
WORK HOLDING JAW DEVICE.
(a) Selecting the Blade. Care must be taken to select a bandsaw blade
of the proper width for the radius or curve to be cut. If a blade is too
wide for the radius, the heel of the blade will press against the outer edge
of the kerf (figure 18 on the following page). When the heel contacts this
edge, any further twisting of the workpiece in an attempt to cut a sharper
radius will twist the bandsaw blade without cutting a sharper radius.
(b) Cutting the Curve. On curve cutting, less pressure must be applied
to the workpiece than on straight-line cutting. The smaller the curve, the
more care must be exercised. It should be understood that when any material
is cut with a flexible bandsaw blade, the blade deflects to the rear in
proportion to the amount of pressure applied to the workpiece.
This
deflection,
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