Bosch Power Tools CM8S manual Cutting Base Molding, Cutting Crown Molding

BM 2610025580 05-13_BM CM8S 5/17/13 1:37 PM Page 34

Saw Operations

Cutting Base Molding

Base molding can be cut vertical against fence or flat on the table. The maximum size that can be vertical on the fence is 2-3/4", flat on table is 12-1/4". Cutting base molding can be done either as

a chop cut or a slide cut depending on the size of the workpiece.

Follow the table for helpful hints on cutting base molding for corners that have 90° angles.

BASE MOlDING CUTTING INSTRUCTIONS

LOCATION OF		Molding in Vertical Position:		Molding in Horizontal Position:
MOLDING		Back of molding is against		Back of molding is flat
	ON SAW	the fence (up to 2-3/4”)		on the table (up to 12-1/4”)
Bevel Angle		Bevel = 0°		Bevel = 45°
Molding Piece Being Cut		To left of corner	To right of corner	To left of corner	To right of corner
Inside	Miter Angle	Left at 45°	Right at 45°	0°	0°

corner of wall

Right eft L

Outside

corner of wall

	t
	h
	ig
Left	R

Position of	Bottom	Bottom	Top against	Bottom
molding on saw	against table	against table	fence	against fence
Finished	Keep left	Keep right	Keep left	Keep left
side	side of cut	side of cut	side of cut	side of cut
Miter Angle	Right at 45°	Left at 45°	0°	0°
Position of	Bottom	Bottom	Bottom against	Top against
molding on saw	against table	against table	fence	fence
Finished	Keep left	Keep right	Keep right	Keep right
side	side of cut	side of cut	side of cut	side of cut

Cutting Crown Molding

Crown molding cuts must be positioned properly to fit exactly.

There are two ways to cut crown molding: flat on table or angled to table and fence.

Crown molding’s “spring angle” is the angle between the back of the molding and the bottom flat surface that fits against the wall.

This miter saw has special miter detents at 31.6° and bevel detents at 33.9°. These detents allow you to easily position most crown molding flat on the table and make precise cuts for 90° corners. NOTE: These detents cannot be used with 45° “spring angle” crown molding. These detents are only for use with crown molding that has a 38° “spring angle.”

See also pages 35 & 36 for miter and bevel angle charts for cutting crown molding that has 38° spring angles. Each chart lists the exact miter and bevel settings required for a wide range of corner angles.

Even though these angles are standards, most rooms do not have angles of exactly 90°; therefore, you will need to fine-tune your settings.

The optional Bosch DAF220K MiterFinder Digital Anglefinder/Protractor measures spring angles and corner angles, then automatically determines the exact miter and bevel settings necessary to make each crown molding cut fit perfectly.

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