Edge processing

Edge finishes: five options

Chamfer

Chamfering is a finish that involves lightly grinding the edges of the glass to soften sharp edges, without seeking an aesthetic polish. This method is simple and economical, as it does not involve the multiple processing steps of polished finishes. The chamfer is often inclined at around 45°, smoothing the edges while keeping costs low.

From a technical point of view, chamfering is often preferred for lenses that are not visually exposed, such as in frames or industrial installations. However, it plays a crucial role in ensuring safety, by eliminating micro-cracks that could compromise the glass’s durability. Glass intended for tempering must have at least one chamfer, as this prevents breakage points when subjected to the thermal stresses of the tempering furnace.

Chamfer applications :

• Glasses for tempering : Mandatory to eliminate weak points before heating in the furnace.

• Framed glass : Used when the edges are not visible or exposed.

• Industrial applications : Projects where aesthetic edges are not a priority.

Matt polished

Matt polish is a meticulous finish that gives the edges of the glass a soft, satin-like appearance. After fine grinding, the glass edge becomes non-cutting and presents a slightly opaque aesthetic finish, ideal for projects requiring an elegant yet discreet finish. Unlike other finishes, Matte Polished is designed to minimize reflections and create a subtly visible edge, perfect for installations requiring smooth fields without excessive shine.

Matt Polished applications:

• Glass partitions: For separations where edges are visible but shouldn’t draw attention, Matte Polished offers an aesthetic finish that blends perfectly into residential or professional environments while guaranteeing non-sharp edges.
• Architectural partitions: This type of finish is often used in offices or galleries, where the sobriety of satin-finish edges maintains a sophisticated look while offering safety and ease of use.

Clear Polished

Clear polish is a top-of-the-range finish that highlights the transparency of the glass edges, obtained after intensive polishing. This treatment makes the glass perfectly smooth and non-cutting, creating an effect of purity close to the glass surface itself. Clear polish is ideal for projects requiring a glossy aesthetic finish while maintaining the safety and strength of the edges.

Clear Polished applications:

• Glass railings: Railing fields are often clear polished to allow perfect integration into modern environments, where transparency and the safety of non-cutting edges are essential.
• Glass furniture: In the design of tables, shelves or display cabinets, clear polish offers perfectly smooth, secure and visually appealing edges, meeting the needs of high-end furniture.
• Architectural glazing: For glazing where the quality and brilliance of the edges are crucial, clear polish ensures a refined finish that enhances the aesthetics of the space.

Clear polish is often recommended for glass with curved or shaped fields, preserving the transparency and security of edges while guaranteeing an impeccable aesthetic finish. Matte polish can also be used for complex shapes when the glossiness of the edges is to be minimized.

Miter (corner joints)

Miter joints are highly technical finishes where the glass is cut at a precise angle, usually 45°, allowing two glass panels to meet without the need for a visible frame. These joints are commonly used in modern designs where continuity between glass panels is paramount.

From a technical point of view, precision mitering is essential. The cut edge is then polished (usually a clear polish) to ensure a clean, solid joint. This type of finish is commonly used in shop windows or curtain walls, where the structural integrity of the joint must be maintained while minimizing visual impact.

Miter applications :

• Store windows : For visually fluid presentation without visible frames.

• Curtain walls : Modern architecture requiring seamless transitions.

• Furniture : Angled assemblies requiring precision and aesthetic appeal.

Bevels

Bevels are a decorative finish where the edge of the glass is cut at an angle to create an elegant visual effect. Bevel angles range from 5° to 45°, depending on the desired edge width. For example, a 1-inch (approx. 25 mm) bevel is usually cut at 4 degrees, while a ½-inch (approx. 12 mm) bevel is cut at 6 degrees. This technique captures and reflects light in a unique way.

At Chronoglass, we offer two types of bevel: the straight bevel, made by machine, and the shape, made by hand for non-straight shapes. Our capabilities include bevels on formats up to 2.5 meters by 90 cm, offering great flexibility. The technical polishing process is fundamental here to guarantee an impeccable finish, particularly when the bevel is combined with a clear polish for maximum transparency.

Bevel applications :

• Decorative mirrors : For a touch of elegance and sophistication.

• Door glazing : Decorative edges for high-end glass doors.

• Interior design elements : Partitions, furniture and other glazed surfaces that require a meticulous, aesthetic finish.