I-Gravity Casting iyindlela yokusebenza kwensimbi ethembele emandleni ama-gravity. Ngaleso sikhathi, amandla okuphoqa, okubuye kube yindlela yokuphonsa insimbi nendlela yobuciko ekucutshungweni kwensimbi, kubandakanya ukusebenzisa isenzo semvelo samandla adonsela phansi ukuze kuncibilike insimbi. Kule nqubo, i-molten Metal ivunyelwe ukugeleza ngokukhululeka ibe isikhunta, ilibulele ngefomu elithile.
Ngokukhethekile emandleni adonsela phansi, le ndlela ivame ukuqashwa ngokuphonsa izingxenye zensimbi ezinkulu nezibunjiwe. Inika amandla insimbi ukuthi igcwalise yonke imithambo ye-mold ngamandla, idale ingxenye oyifunayo noma ingxenye ngemuva kokupholisa. Ngakho-ke, ukudonsela phansi amandla adonsela phansi ikakhulukazi ukukhiqiza izingxenye zensimbi ezinkulu neziyinkimbinkimbi ezihambisana nokwakheka kwesikhunta lapho kuqiniswe.