Izinto zokusika: Ukusarha okubandayo kwesinyithi esomileyo kufanelekile ekucubunguleni intsimbi enomlotha ophantsi, intsimbi yekhabhoni ephakathi nephantsi, intsimbi ephosiweyo, intsimbi yolwakhiwo kunye nezinye iindawo zentsimbi ezinobunzima obungaphantsi kwe-HRC40, ingakumbi iindawo zentsimbi eziguquliweyo.
Umzekelo, intsimbi engqukuva, intsimbi ye-engile, intsimbi ye-engile, intsimbi yetshaneli, ityhubhu yesikwere, i-I-beam, i-aluminium, ipayipi yentsimbi engatyiwayo (xa usika ipayipi yentsimbi engatyiwayo, kufuneka kutshintshwe iphepha lentsimbi ekhethekileyo engatyiwayo)