Black & Decker 3680 Alternative Method for Cutting Crown Molding, SET this Bevel Angle on SAW

Figure 24

FENCE TABLE

BOTTOM SIDE OF	Figure 25
MOLDING

		CROWN
TOP SIDE OF		MOLDING
		FENCE
MOLDING
	TABLE

				TABLE 1 COMPOUND MITER CUT
45 0		5	10	15		20			25		30	35	40	45
	5	80
	8		5
			7	0
				7	6	5
40														40
						6	0
									5
								5
										5	0	SQUARE BOX
35														35
											5
											4
											0
											4

CROWN MOLDING FLAT ON TABLE	CROWN MOLDING FENCE AND
AND AGAINST FENCE	TABLE

Cutting Crown Molding

Your miter saw is better suited to the task of cutting crown molding than any tool made. In order to fit properly, crown molding must be mitered with extreme accuracy. The two flat surfaces on a given piece of crown molding are at angles that, when added together, equal exactly 90˚. Most, but not all, crown molding has a top rear angle (the section that fits flat against the ceiling) of 52˚ and a bottom rear angle (the part that fits flat against the wall) of 38˚.

Your miter saw has special preset miter latch points at 31.62˚ left and right for cutting crown molding at the proper angle. There is also a mark on the bevel scale at 33.85˚.

The chart on the next page gives the proper settings for cutting crown molding. (The numbers for the miter and bevel settings are very precise and are not easy to accurately set on your saw.) Since most rooms do not have angles of precisely 90˚, you will have to fine tune your settings anyway.

PRETESTING WITH SCRAP MATERIAL IS EXTREMELY IMPORTANT!

ALTERNATIVE METHOD FOR CUTTING CROWN MOLDING

Place the molding on the table at an angle between the fence and the saw table, as shown in Figure 25.Use of the crown molding fence accessory is highly recommended because of its degree of accuracy and convenience. The crown molding fence accessory is available at extra cost from your local dealer or B&D service center.

SET THIS MITER ANGLE ON SAW	30																				30	ANGLE OF SIDE OF BOX (ANGLEA)
																		5
			85															3
				80		75
								0
	25							7			6	5							30		25
													60
														5
													5						25
															6-SIDED BOX
														50
		5		80
	20	8			75	0									5						20
															4
						7	6	5											20
									0						40
		DEGREE SETTING						6
											5
										5
															35
													0
	15											5		8-SIDED							15
													5		BOX
													4			30				15
													0
													4
														5		5
																2
														3
	10													0							10
														3		20				10
															5
														2
															20	15
		MITER
	5														15	10				5	5
															10
															5	5
		BEVEL DEGREE SETTING
	0			5				10					15		20	25	30	35	40		45

SET THIS BEVEL ANGLE ON SAW

Instructions for cutting crown molding laying flat and using the compound features.

1.Molding laying with broad back surface down flat on saw table (See Figure 24).

2.The settings below are for all standard U.S. crown molding with 52˚ and 38˚ angles.

The advantage to cutting crown molding using this method is that no bevel cut is required. Minute changes in the miter angle can be made without affecting the bevel angle. This way, when corners other than 90˚ are encountered, the saw can be quickly and easily adjusted for them.

Use the 36807 crown molding fence accessory to maintain the angle at which the molding will be on the wall. Place the bottom side (the side that will be against the wall) against the miter saw fence.

INSTRUCTIONS FOR CUTTING CROWNMOLDING ANGLED BETWEEN THE FENCE AND THE TABLE OF THE SAW FOR ALL CUTS:

1.Angle the molding so the bottom of the molding (part which goes against the wall when installed) is against the fence and the top of the molding is resting on the base of the saw, as shown in Figure 25.

2.The angled “flats” on the back of the molding must rest squarely on the fence and base of the saw.

10

Bevel Setting	Type of Cut
	LEFT SIDE, INSIDE CORNER:
33.85°	1. Top of molding against fence
	2.	Miter table set right 31.62°
	3.	Save left end of cut
	RIGHT SIDE, INSIDE CORNER:
33.85°	1. Bottom of molding against fence
	2.	Miter table set left 31.62°
	3.	Save left end of cut
33.85°	LEFT SIDE, OUTSIDE CORNER:
	1. Bottom of molding against fence
	2.	Miter table set left 31.62°
	3.	Save right end of cut
	RIGHT SIDE, OUTSIDE CORNER:
33.85°	1.	Top of molding against fence
	2.	Miter table set right 31.62°
	3.	Save right end of cut

When setting bevel and miter angles for all com- pound miters, remember that the angles presented for crown moldings are very precise and difficult to set exactly. Since they can easily shift slightly and very few rooms have exactly square corners, all settings should be tested on scrap molding.

PRETESTING WITH SCRAP MATERIAL IS EXTREMELY IMPORTANT!