Sterling Silver Charms HistoryMay 7, 2019
There are three kinds of steel foundries in China. One is the sand casting foundries, then the water glass investment steel casting workshops, and the silica sol investment steel casting workshops. We usually called the investment casting as precision casting process.
If you do choose to use soda cans for your source of aluminum you are going to need a fair amount depending on the size of the item to be cast. Make sure to crush the cans as much as possible before placing in the crucible or other area that will be used to melt the alloy.
If the statue fall, a bronze replica cast in celebration of Michelangelo’s 400th birthday in 1874, takes on extra importance. The replica was made in Naples, Italy at the Chiurazzi Foundry, famed for producing bronzes replicas faithful to museum originals. The casting method dates back 6,000 years to the lost-wax method practiced by the ancient Greeks.
If the artist utilized the microfusione acciaio inox of casting, then a wax “lining” is added to the mold. The completed wax sculpture is then heated until the wax melts and runs out. The space that is created is then filled with molten bronze. This process produces a sculpture that is very fine in detail. Sandblasting, polishing and assembly follow.
As far as metalwork is concerned, Nepal has numerous artifacts in bronze and copper dating back to10th century A.D. Most of the statues were made by using the Cira Perdua (Lost Wax) method. The selected object was first modeled in wax, then coated with clay leaving only a small opening. After the clay mold had dried, the wax was melted and poured out. Then the wax was replaced by molten metal. After sufficient cooling, the clay mold was broken to reveal the cast image.
‘Bhote talchas’ (locks) with single lever costs about Rs.2000.00 while double locks cost Rs.3500.00. A ‘kafi techya’ (Newari tobacco box) costs Rs. 6000.00 and ‘thekis’ (old vessels used in making curd) costs from Rs. 400 to Rs.5000.00 depending upon size. Tibetan chests and boxes are comparatively more expensive and can cost from Rs.10000 to Rs. 1,25,000.00, again depending upon size. Of course, there is no fixed price on curios.
So what’s the answer? Which is the better method? A casting will be cheaper and so more people can enjoy the same thing. Would I be happy for my daughter to wear a cast ring? Absolutley, in fact she does. But I have also made her many pieces by hand.
As a note, casting molten metal can be very dangerous. Molten metal splattered on clothing or skin quickly causes severe burns. Protection of the eyes and other parts of the body is necessary. Wax vapors can be flammable so precautions need to be taken there as well so that the room is fully ventilated. It is strongly urged that anyone who would like to attempt this process purchase books that provide more detail as to how this casting process is done, and read them carefully. These books will also further explain the necessary safety precautions in detail.