Thus a chapter in the ancient history of Nepal was unveiled. The material used in the making of this antique statue- sankhu type sandstone (sandstone without polish), as well as the use of an early script proved that this statue was from the first Lichchavi samvat (Saka Samvat), which meant that it was made in the 2nd century A.D. This statue, discovered in Maligaon in 1994, was the earliest of any found with Lichchavi inscriptions on it.
There are countless different ways this process can be accomplished, depending on the actual sort of casting executed. A few of the varied ways would be frit casting or sand casting, just to mention a few. Each method is unique in the progression and result of the glass.
Assuming that all has gone well, once this step is completed the wax will have drained out and the remaining plaster is now the mold into which your metal of choice (silver, gold or platinum) will be cast. After the metal is cast, it is ready to be finished. This is a time-consuming process which requires the use of various tools like small files (much like nail files)and little polishing wheels. Then, any stones (diamonds, rubies, sapphires etc) are added. It is always wonderful to see the pleased look on client’s faces at the end of this journey.
The Lost Wax Casting process is the preferred method used when art casting. This process was used in ancient times to create bronze items. Small foundries like the type found in backyards, personnel workshops, and garages are able to use the Lost Wax Casting process with a certain amount of professionalism. Commercial foundries and professional art companies use the Lost Wax Casting process as well to create custom items and monuments. The process remains, essentially, the same since the ancient craftsmen who first pioneered the method. When used in commercial manufacturing or jewelry making, the Lost fusione metalli process is called Investment Casting.
To have an even bronze finish, we spray the statue or fountain with high-pressure powdered glass. We also apply a chemical called patina, which protects the bronze from corroding. Lastly, we apply a layer of heated wax, to ensure a radiant finish. After a final inspection, the bronze statue is ready for delivery!
When sand casting, the artist makes a replica of the object to be produced, then has to make a mold. Sand and clay are compacted around the object to make the mold. Then molten bronze, an alloy of copper and tin, is poured into the mold and allowed to cool and harden. The rough metal is then polished, ground and preened to create the work of art, toy, or sculpture. Other metals or decorative interest can be added.
The burnout step is removing the wax from the mold. Since you want the mold to have a bottom, you leave the bottom of the mold in tact and just expose the ends of the gate channels. When the ceramic mold is placed into a kiln to cure, the wax melts and runs out of the channels, this leaves the inside hollow, ready for the bronze.
A one off engagement ring may be better if it is made by hand with all that attention to detail and quality, but it is going to cost you for the privilege!