16
PLUNGE CUTTING – cont’d
4. Start the saw and slowly lower the
blade onto the workpiece while making
sure the front of the sole plate remains
in contact with the workpiece. Allow
the blade to cut through the wood.
5. Continue lowering the blade into the
workpiece until the sole plate rests flat
on the workpiece. Continue sawing
toward the cutting line and complete
the cut as required.
METAL CUTTING
Many types of metal can be cut with your
jigsaw. When cutting any kind of material,
be careful not to twist or bend the blades.
Do not force the blade.
If the blade
chatters or vibrates excessively, use a finer
tooth blade. If the blade heats excessively,
reduce speed of cutting. If the blade teeth
become clogged when cutting soft metals
such as aluminum, use a coarser blade
with fewer teeth per inch. Clamp all work
firmly and saw as close as possible to the
clamping point to eliminate any vibration of
the work being cut.
When cutting conduit, pipe or angle iron,
clamp work in a vise if possible and saw
close to the vise. To cut thin sheet
materials, “sandwich” the material between
hardboard or plywood and clamp the layers
to eliminate material vibration and tearing.
By doing this, the material will be cut
smoothly. Lay out your pattern or cutting
lines on top of the “sandwich”.
Fig. 7
OPERATION
