Yes, you can 3D print gold, but not in the way you might print other materials. The process involves a combination of traditional craftsmanship and modern technology.
Here’s how it works:
● The Technology Behind Gold 3D Printing: Gold 3D printing is typically done using a method called lost wax casting. This process starts with 3D printing a model in wax using a special wax-like resin. The wax model is then encased in plaster to create a mold. Once the plaster hardens, it’s heated until the wax melts away, leaving a hollow cavity in the shape of the original model. Molten gold is then poured into this cavity to create the final gold object.
● Karat Matters: Pure gold (24k) is too soft for most practical applications, so gold used in jewelry and other items is usually an alloy. For example, 18k gold contains 75% pure gold, while 14k gold contains 58.5% pure gold. The rest is made up of other metals like silver, copper, or zinc to increase the item’s strength and durability.
● Color Variations: The choice of alloy metals also affects the color of the gold. You can have gold in various colors, such as yellow, white, and red, depending on the proportions and types of metals mixed with the pure gold.
● Direct Metal Laser Sintering (DMLS): Another method for 3D printing gold is DMLS, which uses a laser to sinter fine metal powder into a solid structure, layer by layer. This method is less common for gold due to its higher cost, but it is possible.
● Designing for Gold 3D Printing: When designing for 3D printing in gold, it’s important to consider the limitations and requirements of the printing and casting processes. It includes accounting for the flow of molten gold, the removal of supports, and the final polishing and finishing of the item.
While you can’t 3D print gold directly with a standard 3D printer, you can certainly create intricate gold items using 3D printing technology as part of the manufacturing process.
