Lost wax investment casting process refers to the process of casting replica sculptures from the original sculpture. Known for investing in various names such as casting, precision casting and \"cire perdue (French) The oldest cultural relics made from lost property The wax casting process can be traced back to 4500- 3500 BC in Israel. In addition, cultural relics have been found in other parts of the world. Although the procedure has been modified according to the recent time and varies according to the foundry, the traditional method is still preferred and the steps are standardized. 1. What is the process behind the loss? wax casting? These castings are made from copies of the original model and can be made of clay with oil or waxbased. The mold has external and internal molds that pour the molten wax into it to form a uniform coating on the internal surface. The outer mold is made of plastic or fiberglass, and the internal model is made of polyurethane rubber, latex and silicone. The mold consists mainly of two pieces and a gasket containing keys, which are necessary to rebuild the original shape. After pouring- After the wax is cooled and hardened, the mold reaches the preferred thickness. The wax model is then removed from the mold, which can be used to make multiple models. A heat- The resistance mixture is then poured into the mold to mix out any defects and the shell is fixed with multi-layer plaster. Other molded parts are now attached to the main body. The model is inverted and baked in the kiln, the plaster is dried in the kiln, and the remaining wax is exhausted. After removing the residual moisture, fill the shell with sand and pour the molten metal into it. The shell and core are removed after cooling, which reveals the original casting. The metal is now \"chased\" to mix the defects and the casting now looks the same as the original model. The final casting is filed and the finishing touches are added as needed. 2. What are other uses of Lost- Wax casting process? The lost- Wax casting process was used in the foundry For centuries, people and artists have made complex sculptures, decorations, and cars. In addition to this, the process is suitable for the casting jewelry, brooch, buckle and other small parts required for the manufacture of various industries. Lost- Wax casting can also be seen in the use of textiles, where wax and textiles are replaced by metal when casting. Due to fabric enhancement, the model is thinner, reducing the amount of metal used in the mold. 3. What are the advantages of missing contact -- Wax casting process? Although there are modern casting methods, Foundry Men and artists still like traditional casting methods. Some of these advantages include:a)The lost- The wax casting process can be used in any material that can melt combustion and evaporate to leave the cavity. b) The copied model will reproduce the tiny details of the original sculpture. c) Allows the unique shape of the casting, which is not possible in other methods. Therefore, the lost wax investment casting process is an experienced method for copying various objects. However, the program does have its drawbacks, such as initial cost, the need for large machinery, and the particularity of the holes in the mold. Therefore, it is important to find expertise, design, performance and cost to get the best quality at the best price.