Cast Plaque Materials
General
Cast plaques are manufactured using sand molds in a state-of-the-art foundry from raw ingot alloyed in the following materials:
Cast Bronze
Equivalent to Copper Development
Association Alloy C92200;
88% copper, 6% tin, 4% zinc, 2% lead.
Cast Aluminum
Cast from Aluminum Association
Association Alloy Designation
C443.2.
Helpful Hints
Bronze castings are the material of choice for interior as well as exterior applications. Although the finish of bronze will naturally patina over time, the material itself will not deteriorate. Objects made from bronze have been found submerged in seawater for over 3000 years still in excellent condition.
The weight of a bronze plaque may be roughly estimated by calculating the plaque's volume in inches (height x width x depth) x .31. For most smaller plaques (under 36" x 30") allow .25" as the approximate depth. Use .375" for plaques over 36" x 30".
Example: For a 36" x 24" plaque calculate 36" x 24" x .25" = 216 cu. inches x .31 = 66.96. The plaque's estimated weight would be 67 lbs.
An aluminum plaque is approximately 1/3rd the weight of a comparable sized bronze plaque. In the above example, simply divide the answer by 3. A 36" x 24" aluminum plaque weighs approximately 23 lbs.
General
The border on a cast plaque is cast integral with the plaque and is generally highlighted by either a stroke-sander, a buffing wheel or hand-rubbed to provide a pleasing contrast with the background finish.
Standard Borders These consist of flat borders and are available at no extra cost on all standard sizes. Some designs are not practical on small namestrips under 3" in height.
Straight Edge
(SE) (no border)
Bevel Edge (BE)
Double Line (DL)
Single Line (SL)
Single Line
Bevel Edge
(SLBE)
Decorative borders based on classic designs are available at additional cost on most standard sizes. These borders are dimensionally sculpted and hand finished. Because these are custom made, often they are used in combination with an unusual shaped or sized plaque
Lamb's Tongue
3/4", 7/8", 1", 1-1/8"
Beaded Bevel
1/4"
Egg & Dart
(with optional
corner detail)
5/8", 3/4", 7/8", 1"
Ivy Leaf
3/8", 1/2", 7/8"
Oak Leaf
1"
Laurel
7/8", 1",
1-1/8", 1-1/4"
Reed & Ribbon
3/4"
Ogee
(inside curve)
1/2" minimum
Water Leaf
(with optional
corner detail)
1"
Union
3/4", 7/8", 1"
These borders are produced from black & white line art. Borders are raised the same height as the plaque lettering and are highlighted to match the raised copy. A few standard examples are shown; others can be easily created from artwork.
Adam
(1-1/2" minimum width)
Floral Stencil
(5/8"minimum width)
Greek Key
(5/8"minimum width)
Helpful Hints
Most of our standard borders are sized in proportion to the size of the plaque. If exact border dimensions are required (for example, to match an existing plaque) please specify when ordering.
In addition to the width of the ornamental borders shown, custom widths may be sculpted by our pattern makers.
Most of our borders - particularly the ornamental and flat decorative styles - may be cast and provided in lengths for use with other sign or decorative elements.
General
All plaques provided are manufactured with a background texture. When none is specified, leatherette will be used.
Leatherette
Pebbled limited to 30" x 40")
Travertine
Sculptured
Helpful Hints
In addition to the background textures shown, custom textures can be provided at additional cost. Not all textures are suitable, however, so please consult with us prior to proceeding. Depending on the texture, we would require either the actual textured material in an appropriate size, or black & white artwork.
Background textures are provided not only to provide a decorative design element, but also to disguise background imperfections inherent in the sand-casting process. Thus, we do not recommend a "no texture" (or sand finish) and do not warrant this texture if specified.
Currently, the largest material our background textures are available in is 30" x 40". Consequently, all plaques exceeding this size will have a seam in the background texture. (The plaque itself is not seamed, only the texture.) These seams are disguised during the production process by our craftsmen, but may be visible on the final product. Because of the design regularity of pebbled texture, seams on plaques with pebbled texture cannot be hidden. Therefore, we do not provide plaques larger than 30" x 40" with pebbled texture.
The background of most cast plaques is painted to provide a pleasing contrast to the highlighted areas. Both cast bronze and aluminum plaques may be painted with standard or optional (extra cost) finishes pictured below. Custom-matched painted colors can also be provided. Additionally, natural chemical patinas and simulated painted patinas are available on bronze plaques.
Light Oxide Stain
Dark Oxide Stain
Dark Green
Natural Sandblast (Bronze)
M40 Golden Bronze
M65 Beige
M28 Dark Blue
Natural Sandblast (Aluminum)
Metallic Grey
Black
M38 Green
M71 Cream
M20 Light Blue
M70 Dark Brown
M8 Medium Grey
M102 Orange
M107 Red
M115 Dark Red
M118 Maroon
M58 Ivory
M25 Medium Blue
M5 Light Grey
M9 Dark Grey
Hand Rubbed Finishes (optional)
Antique(on Bronze)
Pewter(on aluminum)
Anatole Green
Alta Mesa Green
Turquoise
Teal Blue
Twilight Blue
Sea Green
Moss Green
The patina finishes are created by applying chemicals and heat to the bronze surfaces. Once the desired color is achieved, the raised areas are highlighted and a clear protective coating is applied to inhibit further chemical reaction.
Sea Green
Teal Blue
Moss Green
Turquoise
Amber
Burnt Sienna
Helpful Hints
We can match virtually any painted color from a sample provided or from a numerical color matching system (for example, the Pantone Matching System).
Colors may vary slightly from batch to batch. In addition, background colors will change over time due to exposure to light and the environment.
Chemical patina finishes will vary from piece to piece, and uniform colors over large surface areas cannot be controlled. The color may vary from the pictured swatches and the color will change over time on plaques installed outdoors.
General
Once the background of the plaque has been painted, the surface areas are highlighted by sanding (flat areas) or buffing (sculpted areas). To inhibit natural oxidization, a clear, protective coating is then applied.
Highlighting Finishes
Satin Bronze
The Natural metal color with subtle horizontal grain lines meets NAAMM finish designation M33-C11-060.
Satin Aluminum
The natural metal color with subtle horizontal grain lines. Meets NAAMM finish designation AA-M33-C11-R10.
Polished Bronze
The natural metal color buffed to a high gloss, obtained by polishing with successively finer abrasives, then buffing with fine buffing compound. Meets NAAMM finish designation M42-M22-C10-060.
Chrome Plated Bronze
The raised surface of the bronze plaque is polished to meet the polished bronze specifications. The background of the plaque remains in its "natural sandblast" state, providing contrast with the polished raised surface. The entire plaque is then electro-plated using a standard commercial copper/nickel/chrome plating process.
Protective Finishes
In order to protect the natural, highlighted finish of a cast bronze or a aluminum plaque, two options are available:
Clear Protective Lacquer
Providing a low gloss appearance, this clear coating was developed to help ensure many years of carefree maintenance. This option should be selected when matching older plaques or when a lower gloss look is desired (particularly for interior applications.)
Diamond Shield® Protective Coating
Chemists have developed a 2-part coating for protection in the harshest environments. Diamond Shield® can be factory-applied only and provides maximum protection. This coating is applied with a heavier thickness than our clear protective lacquer and is available in a high gloss version only. Diamond Shield® is particularly effective in harsh, exterior environments, where plaques are exposed to salt, pollution and weather.
Helpful Hints
The maximum size available for polished bronze plaques is 48" x 36". A polished finish is not recommended when there are large raised areas due to normal surface inconsistencies inherent in the casting process.
The casting alloy of aluminum used by Matthews does not lend itself to polishing. Polished aluminum plaques are not available.
Diamond Shield® is our standard clear, protective coating. Unless otherwise specified, all plaques will receive Diamond Shield® clear protective coating.
General
Cast plaques are photographically reproduced from typeset letterstyles. As a result of this technology, practically any letterstyle (or artwork) can be incorporated into a cast plaque.
Listed below are 36 standard letterstyles most commonly used on plaques. Other fonts are available upon request.
Custom letterstyles may also be provided for cast plaques.
Emblems - Standard
Matthews has over 9,000 standard emblems including many civic and fraternal organizations, religious groups, government agencies, and armed services. These emblems are often available in an assortment of sizes to fit different-sized plaques. They may have flat relief or sculpted bas-relief.
Please check with us for availability of a specific emblem.
Emblems - Custom
Virtually any emblem, seal, logo or crest can be cast in one of two ways:
Flat Relief Emblems / Portraits
Line details are raised the same height as the raised copy. We require camera-ready art or an electronic file to photographically reproduce the emblem.
Bas-relief Emblems / Portraits
Many emblems or logos lend themselves to a multi-level design. The image will either be sculpted in clay from your artwork (photograph, drawing or black & white art) or modeled by using a computer-aided 3-D model maker.
General
A variety of standard as well as special mounting methods are available to suit virtually any installation.
Standard Mounting Methods
Bosses and Studs (BS)
Recommended Uses For concealed, permanent mounting to:
Installation
Drill holes in the mounting surface slightly larger than the diameter of the studs. Fill mounting holes with silicone, epoxy or quickset cement. Set into the holes, and allow the adhesive to cure.
Rosettes and Toggles (RT)
Recommended Uses
For semi-permanent mounting to:
Installation Using the plaque holes as a template, drill holes through the wall large enough to accommodate the butterfly assembly. Insert each machine screw through the plaque and screw on each butterfly. Fold the butterfly assemblies and insert them through holes until wings spring open inside the hollow wall.
Pull back on each screw head to press the butterfly against the inside wall. Turn each machine screw, first by hand, then with a screwdriver.
If rosette covers are provided, screw rosettes into the toggle bolt heads.
Rosettes, Machine Screws and Expansion Sleeves (RM) Recommended Uses For semi-permanent mounting to:
Installation
Using the plaque holes as a template, drill holes into the wall large enough to accept the lead anchor. Drill deep enough so the fully driven screw won't strike the back of the hole.
Insert expansion sleeves into holes, threaded cones first. Using a metal setting tool, strike tool with hammer to drive sleeve into each hole. Insert each machine screw through the plaque and tighten screws into expansion sleeves with a screwdriver.
If rosette covers are provided, screw rosettes into the machine screw heads
Wood Screws (WS)
Recommended Uses For semi-permanent mounting to:
Installation
Using plaque holes as a template, drill wall holes. Insert wood screws through the plaque holes and tighten screws with a screwdriver.
If rosette covers are provided, screw rosettes into the wood screw head.
Recommended uses
For concealed mounting when
Plaque may need to be relocated in the future
Plaque size is a minimum of 12" x 10"
Special mounting brackets are cast in place on the back of the casting to accommodate a 24" x 3/8" threaded brass rod. Stake mounts can be angled 45° for positioning plaque at an angle.
Recommended uses
Mounting into ground
For plaques 12" or less in width
Maximum plaque size 12" x 8"
Bronze stake measuring 24" x 1-1/2" and attached to back of plaque with 10-24 machine screws. Stake is painted to match the background color of the plaque.
Recommended uses
Mounting into ground
For flat-backed plaques 3/8" thick
Maximum plaque size is 12" x 8" for 1 stake or 20" x 8" for 2 stakes
Rosettes
Rosettes are decorative elements used to cover the screw heads on a plaque installation. Rosettes can also be used with other materials to accent architectural décor.
All rosettes (except R77) are available in cast bronze, brass or aluminum. Rosettes marked with an asterisk (*) are standard---all others are available as an option.
Invisible Frame (IF)
Brass Rod Stake Mount
Garden Stake
*R2 5/8"
*R5 1-1/8" 1"
Star with R16 1-1/8"
1-3/8" Star
R1184 7/8"
R1023 5/8"
*R32 7/8"
*R77 5/8"
*R74 11/16"
*R16 1-1/8"
R4 7/8"
R57 9/16"
R54 11/16"
R48 1"
R69 1-1/2"
R123 1"
R2140 1-3/8"
R95 1-3/8"
RH 2"
R99 1-3/8"
R60 2-1/2"