Bosch Power Tools 4100DG manual Repetitive Crosscutting, Making the Facing Block, Parts Required

Repetitive Crosscutting

REPETITIVE CROSSCUTTING is known as cutting a quantity of pieces the same length without having to mark each piece. When making repetitive cuts from a long workpiece, make sure it is supported – see Fig. 58.

!	WARNING	Never use the rip fence as a direct length stop
		because the cutoff piece could bind between the
fence and the blade causing kickback.
		When attaching the facing block, make sure the
!	WARNING
		block is well in front of the sawblade, because

the cutoff piece could bind between the fence and the blade causing kickback.

MAKING THE FACING BLOCK

The facing block should be made of 1-1/2 inch thick wood – Figure 57 shows dimensions to make a facing block.

Parts Required:

1-1/2” thick wood board cut to size (1)

1/4 x 20 x 1-1/2” long hex. head machine screws (2)

1/4” Washers (2)

1/4 x 20 machine nuts (2)

The facing block is made to the same height (2-3/4”) as the fence and can work with the blade guard system in place when cutoff pieces are 1-1/2 inches or greater. Cut the board to the size shown, drill through 9/32” holes, then counter-sink each hole (down 3/8 inch) using a 3/4 inch drill bit.

Assembly:

1 2

FIG. 57

WASHER

1/4” x 20	3/4”
HEX. NUT	DIA.

3

3/8”

9/32”	1/4” x 20 x 1-1/2” LONG
HOLE	STANDARD HEX. HEAD

BLADE6

1)Place the hex. head 1 of each machine screw into the recess 2 in the rear fence housing – then slide each screw forward to the locations shown.

2)Place facing block 3 over screws.

3)Place washers over screw threads.

4)Thread and tighten the nuts onto the screws.

MAKING THE REPETITIVE CROSSCUT

1.When making repetitive cuts, securely attach a wood facing block to the fence as shown. The T-slot in the rip fence allows for attachment - see Figure 58.

2.Slide the fence (with the facing block) to a position which gives you the length of board that you want to repeat. Lock fence in position. Note: If you are using the scale on the saws front rail during the set-up, be sure move the fence an additional 1-1/2 inches to compensate for the thickness of the facing block.

3.Slide the workpiece 4 along the miter gauge 5 until it touches the facing block 3. Hold workpiece securely.

4.Make a “Dry Run” (practice) – with the saw unplugged, move the miter gauge and workpiece along the facing block until it touches the idle blade (blade is set 1/4 inch higher than workpiece) – Note: The workpiece MUST be off the facing block BEFORE it contacts the blade. Crosscutting capacity 7 for these cuts is 6-1/4 inches with a 3/4 workpiece or 5-1/2 inches with a 1-1/2 workpiece. If “Dry Run” is successful, go to the next step.

5.Attach saw to power source, turn saw on, and make the cut. Turn the saw off and remove the cutoff piece 6 after the blade has stopped and before cutting the next piece.

FIG. 58

7
4
5	3
	FENCE

68.