Ambiri mwa Standard Precision Mold Base ndi zitsulo zapakatikati komanso zapamwamba za carbon alloy.
Pogula maziko a nkhungu, nthawi zambiri amagawidwa m'mitundu iwiri: zoyambira zokhazikika komanso zoyambira zosakhazikika. Titha kumvetsetsa mosavuta kuti maziko a nkhungu ndiofala komanso amakhala ndi muyezo wapamwamba
Pakalipano, kugwiritsa ntchito nkhungu kumaphatikizapo mankhwala aliwonse (monga galimoto, ndege, zofunikira za tsiku ndi tsiku, kulankhulana kwamagetsi, mankhwala ndi zipangizo zachipatala, etc.), malinga ngati chiwerengero chachikulu cha mankhwala chidzapangidwa ndi nkhungu,
