Cutting Crown Moldings | RIDGID MS1290LZ guide

Basic Saw Operations (continued)

Cutting Crown Moldings

Your compound miter saw does an excel- lent job of cutting crown molding. How- ever, in order to fit properly, crown molding must be cut with extreme accu- racy.

	F				F
	e				e
	n				n
	c				ec	38°
	e				ec	38°
						52°
		Miter Saw Table			Miter		Saw	Table
1.Workpiece Lying				2.Workpiece Standing
		Flat			Up-Side Down
See Chart for Bevel				(Saw at 0° Bevel/
and Miter Settings						45°Miter)

Two Methods of Cutting Crown Molding

Crown molding may either be cut (1) flat on the miter saw table or (2) angled to the table and fence. (See square below) Most standard (U.S.) crown molding has a top rear angle (angle that fits next to the ceil- ing) of 52° and a bottom rear angle (angle that fits against wall) of 38°. Your miter saw has special miter settings at 31.6° left and right and a bevel setting at 33.9° to use when cutting crown molding flat on the miter saw table. These settings are identified with a “CM” mark.

Remember: Even though all of these angles are standard, rooms are very rarely constructed so the corners are exactly 90°. You will need to “fine tune” these settings and make necessary adjustments to the cutting angles.

Cutting Crown Molding Flat on the Miter Saw Table

The advantage of cutting crown molding flat on the table is that it is easier to secure the molding at the correct cutting position. Also larger pieces of crown molding may be cut laying flat on the miter saw table.

1.Set the bevel and miter angles using the chart below. Tighten the miter lock knob and the bevel lock knob.

2.Once again using the chart below cor- rectly positions the molding.

3.Lower the head assembly, activate the switch and make the cut. Wait until the blade comes to a complete stop before allowing the head assembly to return to the “UP” position and/or removing the workpiece.

4.ALWAYS PRETEST COMPOUND SETTINGS ON SCRAP MATERIAL TO CONFIRM CORRECT ANGLES.

A

B

C

D

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RIDGID MS1290LZ manual Cutting Crown Moldings, Two Methods of Cutting Crown Molding

Contents

Page Table of Contents Safety Instructions For Miter Saw Safety Signal Words Before Using The Saw When Installing Or Moving The Miter Saw Safety Instructions for Miter SawsBefore Each Use Keep Guards In Place, in working Plan Ahead To Protect Your Eyes, Hands, Face and EarsTo Reduce the Risk of Accidental Dress For Safety Preparing to Make Cut Whenever Saw Is Running Don’t Overreach. Keep good foot- ing and balance Glossary of Terms for Woodworking Before Leaving The Saw Motor Specifications and Electrical Requirements Extension Cord Wire Sizes Length Motor Safety ProtectionWire Sizes Polarized Plug Unpacking and Checking Contents Saw at a desired bevel angle Getting to Know Your Miter SawTop Carrying Handle Convenient way to transport saw Stop Screw Arbor AssemblyInstalling or Removing the Blade Fit 1/4 hex end of combination tool Be sure the arbor lock is released so the blade turns freely Four Basic Saw Controls Workpiece Clamp InstallationAssembling Dust Bag Bevel Lock Lever Bevel Index Pin Depth Adjustment Cam Knob Step One Repositioning Zero Clear- ance Blade Insert Alignment AdjustmentsStep Two Slide Tube Adjustment Loosen the top two gib screws Adjust Miter Scale Indicator Step Three Blade Square to Fence Miter Alignment Step Four Blade Square to Table Bevel Adjustment Adjust Bevel Scale Indicator To check, follow these steps Miter Lock Lever AdjustmentMiter Lock Lever Loosen the top locking jam nut Bevel Lock Lever AdjustmentBevel Pivot Movement/Adjustment Nut Lock Portable Applications Mounting The Miter SawGrip of the plastic handle. Car Work Bench Applications Safety Instructions for Basic Saw Operations Check Damaged Parts. Check for Safety Instructions for Basic Saw Operations con’t Reduce the Risk of Accidental Preparing to Make the Cut Inspect Your Workpiece. Make sure Make workshop child-proof. Install Basic Saw Operations Chop Cutting Body and Hand Position Sliding Fence Miter CutBevel Cut Miter Scale Usage Cutting Compound Miters on Picture Frames and Boxes Cutting Bowed MaterialCompound Cut Compound Cut Box Work against the blade Completely set up your sawWorkpieces. Avoid binding Workpiece Clamp Usage Always perform dry runs. Make Workpiece Support Auxiliary Fence Cut the two outside grooves Rough Cutting a DadoCutting Base Moldings Cut These Grooves With Saw Use a Chisel to Two Methods of Cutting Crown Molding Cutting Crown MoldingsCutting Crown Molding Flat on the Miter Saw Table Cutting Crown Molding Angled to the Table and Fence Making a crown molding support jig Wall Wall to Crown Molding Angle 45 degrees Mounting the Laser System Laser SystemCoverplate Stop Screw Arbor Blade Arbor Lock Supplied with Inner Blade Left Hand Thread Supplied withExactline Spindle Keep these items for use if Laser system is removed Operation Broken Red Line Changing Batteries Replace the back cover and secure with two Phillips screws Maintenance Replacing Carbon Brushes Maintenance and LubricationLower Blade Guard Ball Bearings LubricationMotor Belt Tension Infrequent Lubrication as Required Recommended Accessories AccessoriesUsing Carbide Tipped Blades Prohibited Accessories Problem Probable Cause Suggested Corrective Action Troubleshooting GuideGeneral Trouble Shooting of Brake by Qualified Service Person Only Wiring DiagramMotor Page Repair Parts Always order by part number not by key number ‡ Caution See mechanical assembly caution onStandard Hardware Item May be purchased locally Base/Table Assembly Table Assembly Base Assembly Pivot Assembly Tube Pivot Assembly Pivot Sub Assembly Arm Guard Assembly ‡ Lower Guard Assembly ‡ Motor Assembly Page Catalog No. MS1290LZ Model No. MS1290LZ0Serial No RIDGID,INCPart No. SP6505 Form No. SP6505