Kupera magalasi okhala ndi NO SILICA YAULERE, ndipo amapangidwa kuchokera ku galasi labwino kwambiri la soda. Magalasi amtunduwu amasinthidwa ndiukadaulo wozungulira wa uvuni ndipo umakhala ndi njira yapaderadera yozungulira, kutsuka, kupukuta ndi kuzing'amba, ndipo kumapangitsa magalasi olimba kwambiri.Popanda kugwiritsa ntchito hydro-fluoric acid, akupera magalasi amitundu sikungokhala osasamala zachilengedwe, ndi zonyezimira komanso zosadetsedwa. Njira yapaderayi imapangitsa magalasi opera opanda zodetsa, kuyeretsa komanso kutsuka mosavuta ndipo mkanda uliwonse woyang'anira umatenga gawo lofunikira pakupera ndipo walowa m'malo azofalitsa wamba: Mchenga wa Ottawa, Mipira yachitsulo, Miyala, Mipira ya Ceramic etc. mphero, Mphero mphero, Kukopa mphero. Amakhala okhazikika pamankhwala ndipo sadzachitapo kanthu kapena kuyankhidwa ndi zinthu zomwe zili pansi. Amakhala ndi magalasi osalala bwino motero amatumphuka popanda kukangana pamenepo pochepetsa katundu pamakina oyambitsa. Mphamvu yokoka kukhala 1/3 ya kuwombera kwazitsulo. Potero gawo limodzi ndi kulemera lidzaphimba voliyumu yomweyo poyerekeza ndi magawo atatu polemera kwa Zitsulo kuwombera, potero kumachepetsa katundu pamphero. Izi sizimangochepetsa kugwiritsidwa ntchito kwamagetsi chifukwa chotsika katundu, ndiyotsikiranso mtengo poyerekeza ndi atolankhani ambiri opera.