1. Izimbobo zeringi zihlukaniswe ngokulinganayo.
2. Isikhungo esithuthukisiwe sokwelapha ukushisa senza ukwelashwa okubalulekile kwendandatho eqedwe kancane ifa ngesithando sevacuum.
3. Uhlelo lokulawula i-CNC lulawula izinqubo zenqubo, luqinisekisa ukuzinza kwekhwalithi yokufa.