RIDGID R4121 manual Making a Crown Molding JIG, Using a Crown Molding JIG

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OPERATION

Bevel

 

 

Angle

 

Type of Cut

Setting

 

 

 

 

 

Left side, inside corner

0°

1.

Top edge of molding against fence

2. Miter table set right 45°

 

3.

Save left end of cut

 

 

 

Right side, inside corner

0°

1.

Bottom edge of molding against fence

2. Miter table set left 45°

 

3.

Save left end of cut

 

 

 

Left side, outside corner

0°

1.

Bottom edge of molding against fence

2. Miter table set left 45°

 

3.

Save right end of cut

 

 

 

Right side, outside corner

0°

1.

Top edge of molding against fence

2. Miter table set right 45°

 

3.

Save right end of cut

 

 

 

MAKING A CROWN MOLDING JIG

See Figure 39.

A crown molding jig will need to be made when cutting crown molding with no required bevel setting. The jig holds the crown molding in place during the cutting operation. When using this method, the saw can be quickly adjusted for corners that are not 90° square.

NOTE: A separate jig must be made for different widths.

To make a crown molding jig:

Using a piece of wood 1/2 in. thick, 4-1/4 in. high, and 23 in. long, place the wood on the miter table against the miter fence.

From the back side of the saw, use a pencil to mark the wood through the holes in the miter fences.

Drill holes through the wood then countersink the holes to accept flat head screws.

Attach the wood to the fence using the flat head screws.

Place a piece of crown molding firmly against the miter table and the wood. Mark the height of the molding with a pencil.

Remove the screws and the wood from the miter fence then cut the wood to this width.

Using small nails and glue, attach a piece of wood (1/2 in. thick x 1-1/2 in. wide x 23-1/2 or 28 in. long) to the top of the wood.

NOTE: Keep nails away from the area around the blade cutting path.

Securely reattach the jig to the miter fence.

Make a full 45° left miter cut and a 45° right miter cut through the completed jig.

USING A CROWN MOLDING JIG

Place the crown molding upside down on the miter table with the bottom of the molding against the wood fence.

Use the chart on this and the previous page to select the proper miter angle.

Lift the miter lock lever and position the miter table to the desired setting. Push the miter lock lever down to securely tighten the miter table.

Slowly lower the blade into and through the molding.

Release the switch trigger and allow the saw blade to stop rotating before raising the blade out of workpiece and removing the workpiece from the miter table.

CROWN

MOLDING JIG

Fig. 39

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Contents OPERATOR’S Manual Table of Contents Introduction Blade Coasts After Being Turned OFF General Safety RulesRead ALL Instructions Specific Safety Rules  Before Making a CUT, be Sure ALL ADJUST- Ments are SecureSpecific Safety Rules Symbols Symbol Name DESIGNATION/EXPLANATIONService Symbol Signal MeaningCord Length Wire Size A.W.G ElectricalDouble Insulation Electrical ConnectionGlossary of Terms Features Product SpecificationsMiter ScaleKnow Your Compound Miter SAW 12 IN. BladeAMP Motor Blade Wrench StorageSwitch Trigger REPEAT-A-CUTSELF-RETRACTING Lower Blade Guard Sliding Miter FencesPhillips Screwdriver Combination Square Framing Square Tools NeededCombination WRENCH, 12 mm Installed on Tool Loose PartsBlade Washer Bolt Work Clamp Dust BAG HEX KEY HEX KEY, 1/16Assembly UnpackingMounting Holes Trace HolesInstalling the Work Clamp To install the work clampDust Guide Dust BAGInstalling the Blade Tighten Securely To Prevent Guard MovementBlade Blade Laser Guide Loosen TightenBroken Line Cutting a Slot in the Zero Clearance Throat PlateAligning the Laser Guide Line Adjusting the Miter Lock Lever To adjustSquaring the SAW Blade to the Fence Miter Lock Lever Lift to Unlock Push Down to LockView of Blade Square with Fence Adjusting the Bevel Lock Lever Adjusting the Bevel PivotTravel Pivot Adjustment Push Back To Lock BevelSquaring the Blade to the Miter Table See Figures 24Blade Bevel Lock Lever Correct View of BladeCutting with Your Compound Miter SAW OperationApplications To bypass preset index points To Miter CUT / Cross CUTTo align with miter scale See Figures 28To Bevel CUT See Figures 30Bevel Lock Bevel Scale Stop PIN Bevel CUT ClampTo Compound Miter CUT Compound Miter CUTSupporting Long Workpieces Clamping Wide Workpieces45 x 45 Compound Miter CUT Long WorkpieceAuxiliary Fence Making AN Auxiliary FenceTo attach the auxiliary fence to the saw COMPOUND-ANGLE Settings for Popular Structures Cutting Compound MitersCutting Crown Molding 38˚ / 52˚ 45˚/45˚Angle Miter / Bevel MITER/BEVEL 38˚/52˚ 45˚/45˚Inside Corner Fence Laying Molding Flat on the Miter TableCeiling Crown Molding JIG Using a Crown Molding JIGMaking a Crown Molding JIG Cutting Warped Material See Figures 40Wrong RightAdjustments MaintenanceTo Adjust the Laser Guide General MaintenanceChanging the Batteries Brush ReplacementProceed as follows when replacement is required Accessories Checking Motor Belt Tension and Replacing the BeltWarranty DAY Satisfaction Guarantee PolicyWhat is Covered Under the 3 Year Limited Service Warranty HOW to Obtain Service What is not CoveredCustomer Service Information Model No R4121 Serial No

R4121 specifications

The RIDGID R4121 is a powerful and versatile table saw that has made a significant impact in the woodworking and construction industries. This innovative tool is designed to meet the needs of both professional contractors and DIY enthusiasts, offering a blend of performance, precision, and portability.

One of the standout features of the R4121 is its robust 15-amp motor, which provides ample power to handle a wide range of cutting tasks. This motor delivers a no-load speed of 5,000 RPM, allowing users to rip through hardwoods, softwoods, and composite materials with ease. The saw's 10-inch blade gives users the ability to make clean, straight cuts, while the adjustable blade height and angle settings enable bevel cuts and varied depths for more complex woodworking projects.

Portability is a key characteristic of the RIDGID R4121. With its compact design and lightweight construction, it can be easily transported to job sites or moved around the workshop. The saw features a sturdy folding stand that can be set up quickly, providing stability while saving valuable space when not in use. This makes it an ideal choice for those who need a dependable table saw that doesn’t sacrifice performance for portability.

In terms of safety, the R4121 is equipped with an array of features designed to protect users during operation. It includes a blade guard for added protection, an anti-kickback pawl for preventing kickbacks, and an emergency stop switch for quick shutdown in case of an unexpected emergency. These safety features enhance user confidence, making it a smart choice for both novice and experienced woodworkers.

The Ridgid R4121 also incorporates advanced technologies to enhance usability and precision. The rack and pinion fence system ensures accurate and consistent cuts, allowing users to make easy adjustments for various workpieces. Additionally, the miter gauge included with the saw provides added versatility for cross-cutting and angled cuts, making it suitable for a diverse array of projects.

Overall, the RIDGID R4121 is a well-rounded table saw that excels in performance, safety, and convenience. Whether you’re tackling home improvement tasks or working on larger construction projects, this tool is designed to deliver reliability and professional-grade results, making it a valuable addition to any workshop. With its combination of power, portability, and precision, the R4121 is poised to become a favorite among users who demand quality and performance in their woodworking tools.
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