meaning for 铸造 zhùzào:

  • - to cast (pour metal into a mold)

zhèzhǒng这种
kòngzhì控制
yǒuzhùyú有助于
zhùzào铸造
gèng
zhǎi
gèng
fēnglì锋利
de
dāojù刀具

This control helped to produce narrower and sharper tool tips.