Plunge Cutting - Porter-Cable 548 Instruction Manual

PLUNGE CUTTING

metal on the tool to prevent electrical shock hazard resulting from
accidentally cutting into a live wire. HOLD SAW AS ILLUSTRATED IN
FIG. 4.
One of the distinctive and important features of the Porter-Cable bayonet
saw is the ability to start the cut (in wood only) within an area without
making drilled holes first. This is especially important when making cut-outs
for electric outlets in finished walls, openings in cabinet tops for sinks and
openings for plumbing fixtures.
First, measure the area to be cut out and mark it clearly with a pencil, chalk
or scriber. Choose a convenient starting point and hold the bayonet saw
over the point and inside the line of waste. Tip the machine forward until the
front edge of the base rests firmly on the surface of the material with the tip
of the blade clear of the work surface, as shown in Fig. 4. Turn motor "ON"
and slowly lower the back of the machine allowing blade to bite into surface
of work. Do not move the machine forward until the base is fully seated on
the surface of the work. Now, guide the cutting along the inside of the
marked area. If sharp corners are desired cut right up to the corner of the
marked edge. Stop and back up just a bit, start the turn and cut along the
side. Do the same at each corner until you end up where you started. Then,
go back and cut into each corner from the opposite direction. The base of
the machine is wide enough so you will have a solid guiding surface on
either side of the cut.
When cutting into a wall avoid contact with all exposed
Fig.` 4
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