1. Lifaha tsa khalase ka bobeli li bonolo ebile li entsoe ka thata ka thepa ea boleng bo phahameng, ke hore, li na le matla a itseng a mochine, litaba tsa sio2 li kholo ho feta kapa li lekana le 68%, boima bo ka fihla ho 6-7 Mohs, le li tenyetseha hoo li ka sebelisoang khafetsa. Ha ho bonolo ho senya, sesebelisoa se fafalitsoeng se na le phello e ts'oanang, 'me bophelo ba ts'ebeletso bo feta ka makhetlo a 3 ho feta ba lifaha tse tloaelehileng tsa khalase.
2. Ho tšoana hantle-tekanyo ea ho pota-pota e kholo ho feta kapa e lekana le 80%, 'me boholo ba karoloana bo tšoana. Kamora ho fafatsa, coefficient e khanyang ea sesebelisoa sa sandblasting e bolokoa e le seaparo, 'me ha ho bonolo ho tlohela li-watermark.
3. Tse ke keng tsa nkeloa sebakaâLifaha tsa likhalase tse pentiloeng joalo ka sekhopi li na le melemo e latelang ho feta lisebelisoa tse ling tse hohloang: Ntle le lisebelisoa tsa tšepe tse hohloang, li ka tšoarella nako e telele ho feta mecha efe kapa efe e meng. Li entsoe ka lisebelisoa tsa khalase tsa kalaka tse se nang alkaline. Botsitso bo botle ba lik'hemik'hale, bo ke ke ba silafatsa tšepe e entsoeng, bo ka potlakisa ho hloekisa, ha ho ntse ho boloka ho nepahala ha ho sebetsa ha ntho ea pele.
4. E boreleli ebile ha e na litšilaâ ponahalo ke likaroloana tse chitja tse se nang litšila; bokahodimo bo boreledi ebile bo na le pheletso e ntle
