The Festool Basis WRA 500 / Basis LA 650 is a versatile mitre fence system designed to enhance safety and precision when working with a saw. It can be configured as a crosscut fence, rip fence, or a fence for bevelled cuts, offering significant flexibility for various woodworking tasks.

Function Description:

The core function of the Festool Basis WRA 500 / Basis LA 650 is to provide a stable and adjustable guide for cutting operations. A correctly set limit stop is crucial for safe and accurate sawing. The system's design allows for easy adjustment and secure clamping, ensuring that the workpiece is guided precisely during cutting.

The mitre fence can be mounted on all four sides of the saw table, as illustrated in the manual (Fig. 1). This adaptability allows users to position the fence optimally for different types of cuts and workpiece sizes. It is secured in place using two rotary knobs (1.2). Once these knobs are released, the entire angle unit can be moved in a crosswise direction, enabling quick and precise positioning.

The mitre fence (2.4) itself can be shifted along the angle unit after releasing its dedicated rotary knob (2.3). This allows for fine-tuning the distance to the saw blade. Furthermore, the fence can be clamped with either a higher (Fig. 2) or lower guide surface (Fig. 3), depending on the specific cutting requirement. For cross and longitudinal cuts, it is recommended to adjust the mitre fence so that the maximum gap to the saw blade is 10 mm. This ensures optimal support for the workpiece while minimizing the risk of binding.

For bevelled cuts, the system offers angular adjustment. By releasing rotary knob (2.2) and pulling out the locking pin (2.1), any angle between -90° and +90° can be set. The locking pin also allows for common angle settings to be notched in place, providing quick and repeatable adjustments for frequently used angles.

When used as a rip fence for longitudinal cuts, the "Basis WRA 500" mitre fence or "Basis LA 650" rip fence should be mounted as shown in Fig. 3 / Fig. 4. A critical safety consideration for longitudinal cuts is to ensure that the gap between the stop rail and the saw blade does not narrow towards the back. If this gap decreases, there is a significant risk that cut-off parts of the workpiece could become jammed between the saw blade and the stop rail, potentially leading to kickback or other hazards. For sawing workpieces narrower than 120 mm, the stop rail should be set to the lower guide surface, and the push stick (3.1) must be used to maintain a safe distance from the saw blade.

Important Technical Specifications:

Length of profile rail:
- Basis WRA 500: 500 mm
- Basis LA 650: 650 mm
Angular adjustment range: -90° to +90°
Maximum gap to saw blade for cross and longitudinal cuts: 10 mm
Minimum workpiece width for longitudinal cuts requiring lower guide surface and push stick: 120 mm

Usage Features:

Versatile Application: Can be used as a crosscut fence, rip fence, or for bevelled cuts.
Easy Mounting: Mounts on all four sides of the saw table.
Quick Clamping: Secured with two rotary knobs for fast setup.
Crosswise Adjustment: Entire angle unit can be moved laterally after releasing a single rotary knob.
Adjustable Guide Surface: Mitre fence can be clamped with either a high or low guide surface.
Precise Angular Settings: Allows for setting any angle between -90° and +90° for bevelled cuts.
Notched Settings: Locking pin provides quick access to common angle settings.
Safety Features: Emphasizes checking all rotary knobs are tight before operation and warns against narrowing gaps for longitudinal cuts.
Push Stick Requirement: Mandates the use of a push stick for narrow workpieces during longitudinal cuts.

Maintenance Features:

While the manual does not explicitly detail maintenance features, the design implies several aspects that contribute to the longevity and performance of the device:

Robust Construction: The use of metal profiles and secure clamping mechanisms suggests a durable design capable of withstanding regular workshop use.
Cleanliness: The smooth surfaces of the profile rail and angle unit are likely easy to clean, preventing sawdust and debris buildup that could hinder smooth operation. Regular cleaning would be essential to ensure the free movement of the mitre fence and accurate angular adjustments.
Inspection of Knobs and Pins: The repeated emphasis on ensuring all rotary knobs are tight before operation suggests that users should regularly inspect these components for wear or damage. Similarly, the locking pin for angular adjustment should be checked for proper function.
Lubrication (Implied): Although not explicitly stated, moving parts such as the sliding mechanism for the mitre fence and the angular adjustment pivot points may benefit from occasional light lubrication to maintain smooth operation and prevent wear.
Storage: Proper storage, protecting the device from dust and physical damage, would contribute to its overall lifespan.

In summary, the Festool Basis WRA 500 / Basis LA 650 is a well-engineered accessory designed to enhance the precision, versatility, and safety of sawing operations through its adaptable mounting, precise adjustment capabilities, and clear safety guidelines.

Festool Basis WRA 500 - Page 14

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