Craftsman 21237 Operation Manual - Page 22

CUTTINGBASEMOLDING (FIG. DD) Base moldings and many other moldings can be cut on a compound miter saw. The setup of the saw depends on molding characteristics and applications, as shown. Perform practice cuts on scrap material. To achieve best results: I. Always make sure moldings rest firmly against fence and table. Use hold-down or C-clamps, whenever possible, and place tape on the area being clamped to avoid marks. 2 Reduce splintering by taping the cut area prior to making cut. Mark cut line directly on the tape. 3. Splintering typically happens due to wrong blade application and thinness of the material. Fig. DD Workpiece F e Workpiece Miter saw table C .... e °4 ] I Miter saw table Miter at 45 °, bevel at 0 ° Miter at 0 °, bevel at 45 ° NOTE: Always perform a dry run cut so you can determine if the operation being attempted is possible before power is applied to the saw. CUTTING CROWN MOLDING (FIG. EE, FF) Your compound miter saw is suited for the difficult task of cutting crown molding. To fit properly, crown molding must be compound-mitered with extreme accuracy. The two surfaces on a piece of crown molding that fit flat against the ceiling and wall are at angles that, when added tog eth#[_._qual exactly 90 °. Most crown molding has a top rear angle (the section that fits flat against the ceiling) of 52 ° and a bottom rear angle (the section that fits flat against the wall) of 38 °. In order to accurately cut crown molding for a 90 ° inside or outside corner, lay the molding with its broad back surface flat on the saw table. When setting the bevel and miter angles for compound miters, remember that the settings are interdependent changing one changes the other, as well. Fig. EE -- Miter saw iabie q Bevel/Miter Settings Fig. FF Settings for standard crown molding lying flat on compound miter saw table Inside Corner \\ OR \ Outside Corner Compound Cut Crown Moldings NOTE: The chart below references a compound cut for crown molding ONLY WHEN THE ANGLE BETWEEN THE WALLS EQUALS 90 °. KEYll BEVEL I MITER I TYPE OF CUT IL 339 ° IR 33.9 ° I OL 33.9 ° I _. OR 133.9° 31.6 ° IRight 31.6 ° ILeft 31.8 ° ILeft I 131.6 ° Right inside corner-Left side 1. Position top of molding against fence. 12.Miter table set at RIGHT 31.6 . 3. LEFT s de s t n shed p ece, Inside corner=Right side 1. Position bottom of molding against I fence' 2. Miter table set at LEFT 31.6 °. 3. LEFT side is finished p ece, Outside comer-Left side 1. Position bottom of molding against I fence' 12. Miter table set at LEFT 31.6 °. RIGHT side is f n shed piece. Outside comer-Right side I1. Position top of molding against fence. 2. Miter table set at RIGHT 31.6 ° . 22 _"