155. Compound cuttingCompound cutting is the process in which a bevelangle is made at the same time in which a miterangle is being cut on a workpiece. Compoundcutting can be performed at the angle shown in thetable.Miter angleLeft and Right 45Right 50Right 55Right 57Bevel angleLeft 0 - 45Left 0 - 40Left 0 - 30Left 0 - 25006393When performing compound cutting, refer to "Presscutting", "Slide cutting", "Miter cutting" and "Bevelcut" explanations.6. Cutting crown and cove moldingsCrown and cove moldings can be cut on acompound miter saw with the moldings laid flat onthe turn base.1 2 3001555There are two common types of crown moldingsand one type of cove moldings; 52/38° wall anglecrown molding, 45° wall angle crown molding and45° wall angle cove molding. See illustrations.(1) (2) (3) (4)1 2Fig.A0015562(1)(2)(1)(2)(2)(1)(2)(1)(1)(2)(3)(4)1001557There are crown and cove molding joints which aremade to fit "Inside" 90° corners ((1) and (2) in Fig.A) and "Outside" 90° corners ((3) and (4) in Fig. A).MeasuringMeasure the wall length and adjust workpiece ontable to cut wall contact edge to desired length.Always make sure that cut workpiece length at theback of the workpiece is the same as wall length.Adjust cut length for angle of cut. Always useseveral pieces for test cuts to check the sawangles.When cutting crown and cove moldings, set thebevel angle and miter angle as indicated in thetable (A) and position the moldings on the topsurface of the saw base as indicated in the table(B).In the case of left bevel cutMoldingposition inFig. ABevel angle Miter angleFor outsidecornerFor insidecorner52/38° type 45° typeRight 31.6°45° typeLeft 33.9° Left 30°52/38° typeLeft 31.6° Left 35.3°Right 35.3°Right 35.3°Right 31.6°(1)(2)(3)(4)Table (A)006361Moldingposition inFig. AMolding edge againstguide fence(1) Ceiling contact edge shouldbe against guide fence.Ceiling contact edge shouldbe against guide fence.ForoutsidecornerFinished piecewill be on theLeft side ofblade.Finished piecewill be on theRight side ofblade.For insidecornerWall contact edge should beagainst guide fence.Finished piece(2)(3)(4)Table (B)006362Example:In the case of cutting 52/38° type crownmolding for position (1) in Fig. A:• Tilt and secure bevel angle setting to33.9° LEFT.• Adjust and secure miter angle setting to31.6° RIGHT.• Lay crown molding with its broad back(hidden) surface down on the turn basewith its CEILING CONTACT EDGEagainst the guide fence on the saw.• The finished piece to be used willalways be on the LEFT side of the bladeafter the cut has been made.1. Inside corner2. Outside corner1. Inside corner2. Outside corner1. 52/38 ゚ typecrown molding2. 45 ゚ type crownmolding3. 45 ゚ type covemolding