Munguva yekupisa mumhanyi mold kugadzira, tembiricha yekunyunguduka kwepurasitiki inodzorwa nemazvo mumhanyi system. Plastics inogona kuyerera ichipinda mumakomba mune imwe yunifomu mamiriro, zvichikonzera kuenderana kwemhando yezvikamu. Iyo inopisa mumhanyi inoumba zvikamu zvine yakanaka gedhi mhando, yakaderera yakasara kushushikana mushure mekupwanya, uye kudiki deformation yezvikamu. Saka zvakawanda zvemhando yepamusoro zvigadzirwa pamusika zvinogadzirwa neanopisa anomhanya molds.

Sezvo tungsten-molybdenum nemidziyo yayo yealloy ine yakakwira yekupisa, kusimba kwepamusoro-tembiricha, kukambaira kuramba, kupfeka kuramba, uye yakakwirira corrosion resistance, zvinhu zvakafanira kugadzira mhino dzinopisa dzinomhanya mumichina yekuumba jekiseni yakaita semichina yekuumba jekiseni.