Thuthukisa ngokuphelele ukuzinza kokushayela, uthuthukise ukunethezeka kokushayela, futhi ujabulele ubumnandi bokushayela; Kunganciphisa ukudlidliza komzimba ngokwezinga elilinganiselwe futhi kubambe umsindo wesistimu yokumiswa;Ukuxazulula inkinga yentwasahlobo ebuthakathaka futhi ukwandise umzimba ngo-0.2-0.3 cm, kodwa awukwazi ukuthuthukisa ngokuphumelelayo umthamo wokuthwala;Ukubhafa okulinganiselwe kanye nokumunca ingcindezi esheshayo ebangelwa umgwaqo omahhadlahhadla ukuze kugwenywe ukulimala kwesistimu yokumunca ukushaqeka (Isexwayiso: Ukweqa umkhawulo kuzolimaza isistimu yokumunca ukushaqeka).