E X E C  S U M M A R Y
Brass Alloy 280, also known as Muntz Metal [this content is a placeholder – until our brass alloy specs have been finalized], presents a range of features and benefits that make it a valuable option for crafting address numbers and sign letters. Its elegant aesthetic, corrosion resistance and affordability cater to the preferences of architects, designers, and homeowners seeking a classic and versatile material. However, considerations such as patina development, maintenance, and its reaction to certain environments should be taken into account when selecting this material.

M O R E . . .

1. **High Zinc Content:** Brass Alloy 280 is primarily composed of copper and zinc, with a higher zinc content compared to other brass alloys. This imparts specific properties that make it suitable for various applications.

2. **Yellow-Gold Appearance:** The higher zinc content lends Brass Alloy 280 a distinct yellow-gold color that adds a classic and inviting visual appeal to address numbers and sign letters.

3. **Corrosion Resistance:** This alloy offers good corrosion resistance in typical outdoor and indoor environments, making it suitable for applications that might encounter moisture and moderate atmospheric conditions.

**Considerations:**
1. **Patina Development:** Over time, Brass Alloy 280 can develop a patina. This natural aging process might not be uniform, so our we include a medium and dark oxidized finish in our product catalog. See SURFACE and FINISH for more on this topic.

2. **Maintenance:** To maintain the alloy's original color, regular cleaning and maintenance is necessary. If you are seeking a finish that will not change over time, this is not for you.

3. **Zinc Content and Dezincification:** The higher zinc content can make Brass Alloy 280 susceptible to dezincification, a process where zinc leaches out of the alloy in certain corrosive conditions. However, this is more relevant for plumbing applications than for address numbers and sign letters.

4. **Limited Marine Use:** While Brass Alloy 280 has corrosion resistance, it might not be the best choice for highly corrosive marine environments or areas with excessive salt exposure. See our COPPER options.

E X E C   S U M M A R Y
The "reverse channel" or "fabricated channel" method is a sophisticated and lower carbon footprint method of crafting dimensional sign letters. It combines cutting-edge CNC technology to shape the faces with the artistry of skilled silversmiths who shape the sides of the letters. Silver solder or other types of solder are used to securely attach the faces and returns. The right angle meeting point of the two surfaces are then blended to achieve either a satin brushed or mirror polished finish, resulting in meticulously crafted letters that are both visually appealing and durable.

M O R E . . .

**Lower Carbon Footprint:**
The method described below is a "greener" use of materials as the end product is hollow, using a fraction of the metal that would normally be consumed for solid letters and numbers of this size. The training and dexterity required from the artisanal standpoint is where this manufacturing method gets its most meaningful inputs.

**CNC Technology for Cutting Faces:**
- CNC technology plays a pivotal role in this process by precisely cutting the faces of the letters and numbers. This ensures accuracy and consistency in the shapes and dimensions, forming the foundation of the letter design.

**Handwork by Trained Silversmiths:**
- Skilled silversmiths, who possess specialized expertise, are essential for shaping the sides or "returns" of the letters. Their craftsmanship becomes particularly crucial for shorter, smaller characters with narrow strokes and deep returns, where manual shaping is more intricate, ensuring the letters achieve a seamless and visually appealing three-dimensional appearance.

**Soldering and Fastening:**
- Inside the open back of each letter, silver solder or other types of solder are applied to securely fasten the faces to the returns. This soldering process reinforces the structural integrity of the letters.

**Blending Faces and Returns:**
- To create a harmonious transition between the faces and returns of the letters, the surfaces are meticulously blended together. This process involves using abrasive tools like a Dynafile and/or other gentler abrasives, depending on whether a satin grained (#4) or mirror polished (#8) finish is specified.

**Attaching Threaded Stud Locations:**
- Depending upon the overall size or complexity of the number or letter shape, 3 to 5 nuts are attached with solder to metal straps and in turn secured to the open backs of each number or letter with solder. These accept the threaded studs that come with each order and over which the spacer tubes are placed prior to installing in the holes drilled into the mounting surface (wall, door, fence post, etc). We also offer alternate attachment/affixing axes such as bottom mount or top mount, as well as offering enclosed backs to match the faces and returns should they be visible from the back.

**Creating the Drilling Pattern:**
The hole pattern for each number is transferred carefully to a single paper drilling pattern for the whole address set. The look of this is based upon your approved layout for the set – whether vertical, monospaced, diagonal or other tracked and kerned specifications – which you have relayed to us.

A #4 metal surface is characterized by its smooth and parallel brush strokes, resulting in a subdued sheen that's neither glossy nor matte.

The brushed texture diffuses reflections, minimizing glare and creating a sophisticated visual effect. The parallel grain pattern interacts with light, producing subtle, elongated highlights that shift gracefully as the viewing angle changes, lending depth and dimension.

The satin-like texture of a #4 finish disperses light evenly, reducing the appearance of fingerprints, scratches, and other imperfections.

In settings where ambient or natural light is abundant, a #4 metal surface subtly comes to life, showcasing a play of light and shadow that adds depth and a refined, modern aesthetic that balances visual interest and practicality.

As dusk approaches, and after dark, using focused lighting can elevate numbers letters in this finish to a very nice place indeed. We plan to collaborate with a lighting designer or two soon, to offer constructive advice on how best to achieve the ideal after dark scene for your address. And all of this without resorting to the overly commercial, and not mid-century appropriate approaches offered by halo and edge lit (with acrylic lenses visible at the back) address solutions.

When brass is left uncoated or unfinished outdoors, it undergoes a natural process called patination (aka: oxidization). Over time, exposure to the elements causes the brass to develop a characteristic deepening of color, shifting from its initial bright golden hue to a warm, earthy brown or greenish tone. This patina forms due to the oxidation and interaction with air, moisture, and pollutants. While the initial shine fades, the patina adds a unique charm and vintage appeal to the brass, creating a weathered yet elegant aesthetic that's often admired for its character and authenticity.