Amaso eglasi akholisa ukuba nobunzima obuyi-6{1}}7. Amaso eglasi ebonisa indlela athengiswa kwivenkile yethu enziwe{6}}ngemathiriyeli ekumgangatho ophezulu, inamasuntswana ekristale amhlophe ahlala ehleli kwaye omelele. Banikezela ngamandla oxinzelelo ukuya kwi-3300℃F kunye nokumelana nomlilo ukuya kuthi ga kwi-800 degree, ukuqinisekisa ukusebenza okuzinzile kwiindawo ezahlukeneyo. Ezi ntsimbi zeglasi azinabulukhuni obuphakathi nje kuphela kodwa ziyimichiza engeyongozi, ezenza zikhuseleke kwaye zithembeke.
