Ngexesha lokuveliswa kweglasi engenanto, ukutshatyalaliswa okuncinci okubangelwa yi-tooling kunokukrazula, ukuqhekeka okanye ukuphula iglasi. Ukuthintela oku kungenzeki, onke amacandelo omatshini adityaniswe neglasi eshushu, enjengama-stackers, iminwe, amabhanti okuhambisa kunye ne-roller, kufuneka agqunywe ngezinto ezikwazi ukumelana nobushushu.