Porter-Cable PCB370SS instruction manual Sawdust Blower FIG. P, Blade Selection FIG. Q

Fig. O

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SAWDUST BLOWER (FIG. P)

The sawdust blower (4) should be positioned to point to the blade and workpiece to blow sawdust out of the line- of-sight when cutting. It is not designed to blow all of the sawdust off the table.

Fig. P

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BLADE SELECTION (FIG. Q)

!WARNING

To avoid injury from accidental starting, always turn the switch OFF and unplug the scroll saw before moving, replacing the blade or making adjustments.

This scroll saw accepts 5-in. (127-mm) length blades with a wide variety of blade thickness and widths. The type of material and cutting operations (size of radius or curve) will determine the number of teeth per inch. As a rule, always select the narrowest blades for intricate curve cutting and the widest blades for straight and large curve cutting operations.

The following table represents suggestions for various materials. When purchasing blades, refer to the back of the package for the best use of blades and speeds on various materials.

Use this table as an example, but practice and your own personal preference will determine the best selection method.

Fig. Q

	9.5-15	15-28		30-48
TEETH/	BLADE	BLADE	BLADE/
INCH	WIDTH	THICKNESS	SPM	MATERIAL CUT
TPI	INCH	INCH
				Medium turns on 1/4
9.5-15	0.110	0.018	400-1200	in. (6.35 mm) to 1-3/4
				in. (44.45 mm) wood,
	(2.8 mm)	(0.46 mm)
				soft metal, hardwood
				Small turns on 1/8 in.
15-28	.055-.110	.010-.018	800-1800	(3.18 mm) to 1-1/2 in.
	(1.4-2.8 mm)	(0.25-0.46 mm)		(38.1 mm) wood, soft
				metal, hardwood
				Non-ferrous
30-48	.024-.041	.012-.019	Varies	metals/hardwoods
	(0.6-1.0 mm)	(0.3-0.48 mm)		using very slow
				speeds

NOTE: When using blades, sometimes speeds must change to compensate for smaller curves, radii or smaller diameters. Thinner blades will have more possibilities for blade deflection when cutting angles which are not perpendicular to the table. Read BASIC SCROLL SAW OPERATION for more suggestions.

NOTE: The blade must be installed with the teeth pointing downward, to prevent the workpiece from being pulled upward by the saw blade action.

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