The lost wax method (á çire perdue) is a technique for converting objects into castings of, for example, bronze or aluminum. A one-time mold is formed around a wax model. By placing the mold in the oven, the wax melts and runs out of the mold. The wax model is ‘lost’ and a hollow space has been created. Bronze can be poured into this. After cooling, the mold is removed by breaking it. Pouring and venting channels are cut off, leaving only the casting.