Lo matshini wenzelwe injongo yokunyuswa kwenkqubo yezo zincinci, kunzima ukubamba okanye iisampuli ezingaqhelekanga phambi kokusila kunye nokupholisha.Emva kwenkqubo yokunyusela, inokwenza kube lula ukucolwa kunye nokupolisha kwesampulu, kwaye kulula ukujonga ubume bemathiriyeli phantsi kwemakroskopu ye-metallographic, okanye ukulinganisa ubulukhuni bezinto ngokuvavanya ubulukhuni.
