Okulandelayo ukuphrinta kwesilika esikwenzele amakhasimende ethu, njengoba ubona, ukuphrinta kwesilika kuvame ukuba nemibala engu-1-3, kanti imibala emibili inebanga elithile. Ibanga livame ukuba ngaphezu kuka-3mm.
Ukunyathelisa usilika kudinga ukuthi ubuso bebhodlela/bembiza bube bushelelezi kakhulu, bube bushelelezi, singenza ukunyathelisa usilika okushisa okuphezulu (okuyisikhathi eside sokugcina, kodwa umbala ulula kancane) kanye nokunyathelisa usilika okushisa okuphansi (okubukeka kucwebezela).
