Porter-Cable 3807 - Manual (Page 15)

15
USING SAW AS A C H O P S AW
When cutting material that is narrow enough to allow the saw blade to cut through in a chopping motion (similar
to a conventional miter saw) instead of sliding the saw blade through the workpiece, the sliding action of the
saw must be locked in the rear position, as shown in Fig. 45, by tightening lock knob (A). The cuttinghead (B)
is pushed straight down to make the cut. After the cut is completed, release the switch trigger and let the blade
come to a complete stop before returning the cuttinghead to the up position.
DADO CUTTING
Dado cutting can easily be accomplished with your compound slide saw, as shown in Fig. 46, using a single saw
blade and moving the workpiece sideways the width of the saw blade after each cut. The cut is made in the
conventional way as explained in the section CORRECT OPERATING PROCEDURE and the downward travel
of the saw blade is adjusted for the depth of the dado as explained in the section ADJUSTING DOWNWA R D
T R AVEL OF SAW BLADE.
CUTTING CROWN MOULDING
One of the many features of your saw is the ease of cutting crown moulding. The following is an example of cutting
both inside and outside corners on
52 … 38
degree wall angle crown moulding.
NOTE: When cutting 45 degree wall angle crown moulding, the following procedure for inside and outside
corners is the same with the exception that the bevel position will always be at 30 degrees and the miter
position will be 35
1 … 4
degrees to the right or left .
1. Move the table to the 31 5 … 8
degree right miter position and lock the table in position.
NOTE: A positive stop is provided to find this angle quickly.
2. Tilt the saw blade to the 33 7 … 8
degree left bevel position and tighten bevel lock handle.
NOTE: A triangle indicator is provided on the bevel scale to find this angle quickly.
3. Place the crown moulding on the table with the CEILING EDGE of the moulding against the fence, and make
the cut, as shown in Fig. 47.
Fig. 47 Fig. 48
E
B
D
C
A E
Fig. 45
B
A
Fig. 46