how to deepen a picture frame rabbet depth

3 min read 01-12-2024

how to deepen a picture frame rabbet depth

Meta Description: Learn how to deepen a picture frame rabbet for thicker mats and artwork! This comprehensive guide provides step-by-step instructions, tools needed, and troubleshooting tips for perfect results. Deepen your picture framing skills today with our expert advice and techniques for achieving professional-looking results.

Understanding Picture Frame Rabbets and Their Depth

A rabbet is the recessed channel cut into the inside edge of a picture frame. It holds the glass, matting, and artwork. The rabbet's depth is crucial; insufficient depth can prevent the artwork from fitting correctly or damage the frame. Deepening a shallow rabbet is often necessary for thicker mats or artwork.

Assessing Your Frame and Planning the Deepening Process

Before you begin, carefully assess your frame. Determine the current rabbet depth using calipers or a ruler. Then, measure the thickness of your matting and artwork to determine how much deeper the rabbet needs to be. Remember to account for the glass thickness as well. You don't want the glass to be too tight, as this can cause breakage.

Tools You'll Need:

Router: A crucial tool for precision and efficient rabbet deepening. A handheld router with a variety of bits is ideal.
Router bits: A variety of bits depending on the depth of the cut, and what type of edge you want on the rabbet. Consider using a rabbeting bit for the cleanest results.
Clamps: To securely hold the frame during routing. Consider using a specialized frame clamping system for consistent results.
Safety Glasses: Essential for protecting your eyes from flying debris.
Dust Mask: Important for preventing inhalation of wood dust.
Measuring tools: Calipers or a ruler for precise measurements.
Pencil: For marking the routing depth.
Wood Glue (optional): for repairing any damages that occur during routing.
Sandpaper: For smoothing the newly deepened rabbet.

Step-by-Step Guide to Deepening a Picture Frame Rabbet

1. Secure the Frame: Clamp the frame securely to your workbench. Ensure the frame is stable and won't move during routing.

2. Mark the Routing Depth: Using a pencil, carefully mark the desired depth on the frame's inside edge. This ensures a consistent rabbet depth.

3. Choose the Right Router Bit: Select a router bit appropriate for the required depth and the type of rabbet you want (straight, decorative, etc.).

4. Set the Router's Depth: Adjust the router's depth stop to match your marked depth. It's safer to make several shallow passes than one deep cut.

5. Carefully Route the Rabbet: Start routing slowly and steadily, maintaining even pressure. Multiple passes are safer and ensure a clean cut. If you're working with a delicate frame, use a very low speed.

6. Inspect and Smooth: Once you've achieved the desired depth, inspect the rabbet for any irregularities. Use sandpaper to smooth any rough edges or imperfections.

7. Test Fit: Before adding your artwork and glass, test the fit by placing the glass and matting in the deepened rabbet to ensure everything fits perfectly.

Troubleshooting Common Issues:

Chipped Wood: This can occur if you push too hard or use a dull bit. Use a sharper bit, take multiple lighter passes and maintain even pressure.
Uneven Depth: Make sure your frame is securely clamped and your router's depth is precisely set.
Tear Out: Use a router bit designed to minimize tear out, maintain consistent speed, and consider using a router plane for delicate frames.

Alternative Methods for Deepening a Picture Frame Rabbet

For very delicate frames, or if you lack the proper tools, alternative methods exist, although they require more skill and patience:

Hand Chisels: A skilled woodworker can carefully deepen a rabbet using hand chisels. This requires patience and precision, but can avoid potential damage from a router.
Files: Smaller, more intricate frames can be adjusted with very fine files. This is a slower method, but effective for smaller adjustments.

Conclusion: Achieving Professional Results

Deepening a picture frame rabbet can significantly enhance the presentation of your artwork. By following these steps and utilizing the right tools, you can achieve professional-looking results, transforming your frames to fit thicker mats or artwork. Remember safety first! Always wear safety glasses and a dust mask. With practice, you'll master this essential picture framing skill.