Ukusakazwa kwensimbi kwe-alloy kuyingxenye ebalulekile ekwakhiweni nasekucutshungulweni kwemishini yemboni yokwakha. Ngamandla abo angajwayelekile, ukuqina, nokugqoka izakhiwo zokuphikisana, lawa ma-casting adlala indima ebalulekile ekuqinisekiseni ukuqina nokuphila isikhathi eside kwezingxenye zemishini yokwakha. Enye yezinzuzo ezibalulekile zokuphosa kwensimbi ye-alloy ilele ekhonweni labo