A beveled mat is a mat board in which the window opening has been cut at an angle, usually 45 degrees, to expose the inner core of the mat. This angled cut creates a visual frame within the frame, emphasizing the artwork by producing depth, shadow, and contrast around the image. Beveled mats are a staple in professional framing, offering both decorative appeal and functional clarity.

Purpose and Aesthetic Value

The main role of a beveled mat is to enhance the presentation of the artwork. By revealing the mat's inner core, the bevel provides a contrasting outline that helps guide the viewer's eye toward the subject. Depending on the color of the core-whether white, black, or colored-the bevel can subtly blend with or dramatically contrast against the artwork and mat surface.

Cutting Techniques

Beveled mats are cut using precision tools. A traditional mat cutter allows framers to manually create straight and angled cuts, while a Computerized Mat Cutter (CMC) provides high accuracy and the ability to create complex shapes and multi-opening designs. A clean, sharp blade is critical-dull blades may tear or crush the mat fibers, leading to unsightly bevels.

Design Considerations

Core Exposure: The choice of core color significantly influences the final appearance. White or cream cores provide a clean, classic look, while darker or colored cores offer a bold accent.
Mat Thickness: Thicker mats, such as 8-ply, produce deeper bevels that create stronger visual impact compared to standard 4-ply mats.
Decorative Options: Techniques like double matting or V-Grooves incorporate multiple bevels for layered and ornate effects.

Conservation and Archival Considerations

When using beveled mats in conservation framing, it is essential to choose acid-free or archival-quality mats to prevent acid migration over time. Non-archival mats can discolor at the bevel cut, leaving a yellow or brown line visible around the artwork. Archival mats, such as cotton rag or alpha-cellulose mats, maintain their color and stability, ensuring long-term preservation of valuable pieces.

Applications

Beveled mats are commonly used in fine art, photography, documents, and memorabilia framing. They add elegance and depth to certificates, diplomas, and awards, while also protecting the artwork by spacing it away from the glazing.

Beveled Mat