Ibhola yokusila itshokolethi ethe nkqo ngumatshini okhethekileyo wokusila itshokolethi entle kunye nomxube wayo.
Ngokusebenzisa impembelelo kunye nokungqubuzana phakathi kwezinto kunye nebhola yensimbi kwi-cylinder ethe nkqo, izinto eziphathekayo zihlanjululwe ngokufanelekileyo kwi-fineness efunekayo.