Iiglasi ezincinci zeglasi luhlobo olutsha lwezinto ze-silicate eziphuhliswe kwiminyaka engamashumi amabini edlulileyo. Kukho iintlobo ezininzi kunye noluhlu olubanzi lwezicelo. Abantu banikela ingqalelo ngakumbi nangakumbi. Indlela yokuvelisa ishwankathelwa ngolu hlobo lulandelayo. Iindlela zokuvelisa amaso eglasi zinokwahlulwa ngokwezigaba zibe zimbini: indlela yomgubo kunye nendlela yokunyibilika. Indlela yepowder kukutyumza iglasi kwiincinci ezifunekayo, emva kokuhluthwa, kwiqondo lokushisa elithile, ngokusebenzisa indawo yokufudumala efanayo, iinqununu zeglasi ziyancibilika, kwaye i-microbeads yenziwe phantsi kwesenzo soxinzelelo lomphezulu. Indlela yokunyibilika isebenzisa ukuhamba komoya okuhamba ngesantya esiphezulu ukusasaza ulwelo lweglasi kumathontsi eglasi, enza ii-microbeads ngenxa yokuxinana komphezulu. Indlela yokufudumeza: Kwiglasi enobushushu obunyibilikayo ngokubanzi okanye obuphezulu, ukufudumeza kwegesi okanye idangatye le-oxyacetylene kunye nokufudumeza kwedangatya le-oxyhydrogen kungasetyenziswa; kwiglasi enobushushu obunyibilikayo obuphezulu, isixhobo se-DC arc plasma singasetyenziselwa ukufudumeza. Indlela yomgubo Ekuqaleni, eyona ndlela yomgubo yayisetyenziswa. I-particle yeglasi engumgubo njengezinto ezikrwada zafakwa kwi-reservoir kwaye zahamba ukuya kwindawo eshushu ye-nozzle yegesi ephezulu. Amaso eglasi alawulwa lidangatye elomeleleyo apha kwaye atyhalelwe kwigumbi elikhulu lokwandisa isixhobo. Ngokufudumeza idangatye, amaso eglasi ayanyibilika phantse ngoko nangoko. Emva koko amaqhekeza anciphisa ngokukhawuleza i-viscosity kwaye abunjwe kwimilo efanelekileyo ye-spherical ehlangabezana neemfuno phantsi kwesenzo soxinzelelo lomphezulu.
