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Material Information
Design Guidelines

Gold Plated Brass

14K or 18K Electroplated Gold on Brass

Colors

14K Yellow 18K Yellow ”Rose”

About Gold Plated Brass

Gold Plated Brass is plated with 14K or 18K gold (depending on your choice) and is available in both yellow and rose colors. It’s capable of showcasing intricate details and offers a professional, finished look and feel. Gold Plated Brass, electroplated with 0.25 microns, is an economical alternative to solid gold for jewelry and other accessories for occasional wear. For jewelry for everyday wear, we recommend Brass or Gold.

Common Applications

Women’s and Men’s Jewelry including Bracelets, Pendants, Cufflinks, and Tie Bars

Handling and Care

Gold Plated Brass is a durable material, but can still scratch or wear through. Prolonged surface wear can rub off the finish. To prevent damage, we recommend storing your item in a soft cloth pouch away from other products, and avoiding exposure to household chemicals and cleaning products.

High Quality & Professional Finishing

Capable of intricate details

Great value

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Frequently Asked Questions

How long will the plating last?

The lifetime of the electroplating is dependent on many factor, such as handling, how often the piece is worn, and exposure to humidity and soap. We typically don’t recommend electroplated jewelry for rings because it will wear faster than pendants and other jewelry.

Will this turn my finger green?

Over time, the electroplating will wear through, exposing the brass base material. Brass can react with your skin to produce a green tinge. However, this is non-harmful.

Does this contain nickel and what is the underplate?

We underplate the gold with a tin-rhodium alloy to provide strength and durability. No nickel is present in this material.

How is this material made?

Brass models are fabricated using lost wax casting. First, the model is printed in wax using a specialized high-resolution 3D Printer. It is then put in a container where liquid plaster is poured in around it. Once the plaster sets, the wax is melted out in a furnace, and the remaining plaster becomes the mold.
Molten brass is poured into this mold and set to harden. The plaster is broken away, and your product is carefully cleaned and hand polished. Each product goes through two plating steps - first a layer of tin-rhodium is applied to provide strength and durability. Then your selected precious metal plating provides the finishing touch.

More Materials

Professional Finish
Great Value
Capable of intricate details
APPLICATIONS
Pendants
Tie Bars
Home Decor
TECHNOLOGY
Lost Wax Casting
High Quality Finish
Capable of intricate details
Many colors available
APPLICATIONS
Timeless rings
Earrings
Cufflinks
TECHNOLOGY
Lost Wax Casting
  • Bounding Box
  • Wall Thickness
  • Wires
  • Surface Details
  • Escape Holes
  • Clearance
  • Interlocking Parts
  • Multiple Parts
  • Accuracy
  • Design Tips

BOUNDING BOX

Maximum
89 × 89 × 100 mm
Minimum
2.5 × 2.4 × 0.6 mm

Your model should be the minimum and maximum bounding box sizes. The maximum bounding box represents the largest model that our printers can produce. The minimum bounding box size is the smallest dimension in which we can print in this material.

WALL THICKNESS

Min Supported Wall Thickness
0.8 mm
Min Unsupported Wall Thickness
0.8 mm

A supported wall is connected on two or more sides. An unsupported wall is one connected to other walls on less than two sides. Walls in your model should be thicker than or equal to the minimum measurements suggested to ensure your model makes it through printing and cleaning. Walls that are too thin are prone to warping in the printing processing, or may break when we remove it from the printer and clean it.

Walls and wires close to or slightly above the guidelines may still be rejected based on the geometry. For example, extra long wires or walls protruding from an object may be damaged during cleaning. Our production team will communicate with you if the design is too weak with tips on how to strengthen it.

WIRES

Min Supported Wires
0.8 mm
Min Unsupported Wires
0.8 mm

A geometry considered a wire when its thinner in both unconnected directions than its length. Wires that are under our suggested minimums are prone to breaking in the cleaning process.

SURFACE DETAILS

Min embossed detail
0.4 mm high & wide thick
Min engraved detail
0.35 mm high & wide

We recommend these minimum measurements for details like embossing or engraving, based off of printer resolution.

ESCAPE HOLES

Single Escape Hole Diameter
4.0 mm
Multiple Escape Hole Diameter
2.0 mm

Escape holes allow unbuilt material inside hollow products to be removed.

To create brass products, a plaster mold is poured around a wax print of your product, and then brass is cast into the plaster mold. For products with hollow areas, escape holes are essential for two parts of this process. First, the liquid plaster must be able to enter the hole to fill in the hollow area. Then, once the metal is cast, the escape hole must be large enough to allow removal of the hardened plaster from the hollow area. If escape holes are too small, the hollow area may be completely filled in with metal or plaster.
A single escape hole at the end of a cavity will not allow material in the corners near the escape hole to fully escape. So we recommend multiple escape holes at both ends of the cavity.

A single escape hole at the end of a cavity will not allow material in the corners near the escape hole to fully escape. So we recommend multiple escape holes at both ends of the cavity.

CLEARANCE

0.3 mm

Clearance is the space between an two parts, e.g. space between gears or a ball and socket joint.

INTERLOCKING AND ENCLOSED PARTS ?

No.

MULTIPLE PARTS ?

Up to 2.

ACCURACY

Your model may shrink about 0.25 mm plus 2.5% after casting and finishing.

For rings the inner diameter is accurate within +/- 0.1 to 0.15mm. On average, the model shrinks about 2.5% after casting and finishing. We do our best to polish the internal diameter to match your model file.

DESIGN TIPS

Some detail is lost during polishing

Polishing gives this material a beautiful finish, but can have an impact on fine details. During the polishing step, fine or sharp-edged details may be polished down or even broken off. Keep this in mind when you're designing fine details.

Internal detail can not be polished

We can only polish well-reachable surfaces, so tight internal spaces may remain unpolished.

Plating will wear in the long term

Prolonged surface wear can rub off the finish. The plating on the inside of rings will wear in the long term, exposing the skin to the underlying brass. This is not harmful for the skin, but it can leave undesired green stains.

Keep embossed and engraved details shallow

Engraved details must not be too deep, and embossed details must not be too tall. The width of your detail must be the same or greater than how far it juts out from the surface (or sinks in for engraving). Engraved details that are too deep will cause issues when casting. Embossed details that are too tall are more likely to chip and break during production (unless the detail meets the minimum wall requirements).

Stone holding prongs should be short

Prongs for holding stones cannot be too long without anything connecting them. This connecting beam is to prevent the wax from breaking away. Also, with thin and long prongs, the product will not to be able to hold big stones. Make sure your stone will sit snug and tight.

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