Router Table Insert: An Essential Guide

Router table inserts can significantly improve the versatility and functionality of a router table. These inserts are often overlooked, yet they play a crucial role in woodworking. In this guide, we’ll cover everything you need to know about router table inserts.

What is a Router Table Insert?

A router table insert is a flat plate that mounts in a recess of the router table to hold the router securely. This plate allows easy router removal and replacement. It typically features pre-drilled holes for router mounting and may include leveling screws for precise alignment with the table surface.

Materials Used in Router Table Inserts

Phenolic: Phenolic resin plates are durable, resistant to warping, and smooth. These qualities make them a popular choice among woodworkers.
Aluminum: Aluminum inserts provide strength and stability. They are less prone to warping compared to other materials. They also offer excellent durability.
Acrylic: Acrylic inserts are lightweight and provide a very smooth surface. However, they are more susceptible to scratches and might not hold up as well to heavy-duty use.

Features to Look For

When choosing a router table insert, consider the following features:

Size and Compatibility: Make sure the insert fits your router model and matches the dimensions of your router table.
Leveling Mechanism: Look for inserts with built-in leveling screws. These allow you to adjust the insert so it sits perfectly flush with the table surface.
Ring Inserts: Some router table inserts come with removable rings of different sizes. This feature allows you to adjust the opening around the router bit for optimal support and minimal tear-out.
Miter Slot: Some inserts include a miter slot for guiding miter gauges or other jigs. This can add to the versatility of your router table setup.
Pre-Drilled Holes: Inserts with pre-drilled holes for different router models save setup time. Custom drilling can be avoided with these inserts.

Installation Tips

Installing a router table insert requires precision. Here’s a basic rundown:

Measure and Mark: Carefully measure the dimensions of your insert and mark the recess area on your router table.
Cut the Recess: Use a router or jigsaw to cut the recess for the insert. Ensure the cut is smooth and accurate.
Level the Insert: Once the insert is positioned, use the leveling screws to make sure it sits flush. A level insert ensures smooth operation and accurate cuts.

Benefits of Using a Router Table Insert

Improved Versatility: Inserts allow for quick router changes, making it easier to switch between different bits and setups.
Enhanced Precision: A properly leveled insert ensures that your workpiece stays flat, leading to more accurate cuts.
Better Safety: Inserts can help support your workpiece more effectively, reducing the risk of routing mishaps.
Ease of Maintenance: Having a removable insert allows for easier cleaning and maintenance of both the router and the table.

Maintenance Tips

Regular Cleaning: Keep the insert clean from dust and debris to maintain a smooth surface.
Check for Warping: Inspect your insert regularly for signs of warping. Replace it if necessary to ensure accurate work.
Tighten Screws: Periodically check and tighten the leveling screws and mounting bolts. This prevents any unwanted movement.

Popular Router Table Inserts

Several brands and models are highly regarded among woodworkers:

Kreg PRS4038: Known for its high-quality build and pre-drilled holes, this insert suits various routers.
Rockler Router Lift FX: Offers superior precision and comes with a built-in lift mechanism. Ideal for heavy use.
Bosch RA1185: Made from aluminum, it provides an excellent balance of durability and smooth operation.
Incra Mast-R-Lift-II-R: A premium option featuring a lifting mechanism and compatibility with multiple router types.

DIY vs. Pre-made Inserts

Some woodworkers prefer making their own router table inserts. This can be economical but requires skill and precision. Pre-made inserts offer convenience and are designed to fit specific models. For beginners, pre-made options are recommended for ease and reliability.

Common Issues and Solutions

Insert Not Flush: If the insert is not flush with the table, adjust the leveling screws. Use a straightedge to check the alignment.
Router Vibration: Ensure the router is securely mounted. Tighten all screws and check for any play.
Insert Warping: Replace the insert if you notice warping. A warped insert affects the accuracy of your cuts.

Advanced Tips

Custom Inserts: Consider making custom inserts for specific bits or tasks. This allows for more precise and stable routing.
Router Lift Compatibility: Look for inserts compatible with router lifts. Lifts add height adjustment capabilities, enhancing accuracy.
Use of Featherboards: Featherboards can be attached to the insert to secure the workpiece, promoting smoother and safer cuts.

Conclusion

Router table inserts are a key component in a woodworker’s arsenal. They improve the functionality, precision, and ease of use of router tables. By understanding the materials, features, and maintenance of router table inserts, you can maximize your woodworking efficiency and output.