Diamond engagement rings casting process by Diamonds-USA.com

Diamond rings, from another perspective. In this video you can see the creation of the ring from the initial design to the molding and casting of the ring using the lost wax technique.

Welcome to diamonds USA short film series.We take pride in the many stages that go into making our engagment rings. We would like to share with you the attention craftsmanship and loving effort that goes into each and every ring.

Every ring starts with a design; our designs at diamond USA (http://www.diamonds-usa.com/ ) are inspired by the latest jewelry shows in the world.
The first step of the design is made on the computer as a 3D file. From a three dimensional file a wax model of the ring is created using high Tec rapid prototyping technology or a 3D printer. The way it works is by printing very thin layers of wax on a base and layer upon layer building up to a whole model. After the model is printed it needs to be cleaned and prepared for the next stage.

Lost wax technique is a process of casting metal into plaster molds. The term lost wax refers to the wax model used to make the plaster mold. The wax is "lost" by evaporating during the process. The wax models are attached to a spure or a tree which is also made of wax and stands on a base .Later on through the trunk and stems or the gates as they are called, the metal will flow into the ring model shape.
Tree making requires skill to assure that while casting, the metal will flow through evenly and reach all the voids. A steel cylinder called a flask is put over the tree and the base. We are now creating the plaster mold. They are then placed into a vacuum chamber and plaster is poured on top of the tree covering it. The vacuum removes any air bubbles that might be caught in the plaster preventing holes or cracks in the finished cast. The plaster mold is left to harden and then placed in a kiln. The kiln is set to scorching 1,300 degrees Fahrenheit about 700 degrees Celsius evaporating the wax. The mold is left with empty cavities in the shape of the ring and tree. Finally the rings can be casted.

The needed amount of pure gold grains and master alloys are placed into the melting pot to create the 18k gold. The pot and the empty plaster mold is placed into a special vacuum furnace that heats up to the melting point of the metal. When the metal reaches its melting point it's poured into the plaster mold. The vacuum helps draw the molten metal into every last cavity in the plaster mold thus assuring the fine details. It is then left to cool down. From left to right (in the video) you can see the three stages of the plaster mold: First occupied by the wax tree. Second the cavity left after the wax evaporated in the furnace And last, filled with gold. The flask is removed and the plaster is broken using water, freeing the gold casted tree. The gold cast is then cleaned reviling the rings on the tree branches. The gold rings are then cut of by hand. The gold of the tree and branches are recycled. The rings are then inspected under a microscope and if there are any minor flaws found they are repaired by laser.

Check out our next film where we will finish the ring at the goldsmith and the gem setter. Diamonds USA versatility tailored to your diamonds. For more films by diamonds USA you can visit our website at www.diamonds usa.com.

Category:

Howto & Style

Tags:

• loose diamonds
• diamond engagement rings
• diamond ring
• diamond rings
• engagement ring
• engagement rings
• engagement wedding rings
• wedding engagement rings
• wedding rings

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