Njengoko idiski yokutywina ye-alumina ceramic iyinxalenye ephambili kwi-oyile, emanzini, kwinkqubo yokutywinwa kwegesi, sihlala siqinisekisa ukuba senza ezona mveliso zikumgangatho ophezulu ngokulawula umgangatho ongqongqo kuyo yonke inkqubo.Ukuba ujonge umenzi osemgangathweni weediski zokutywina ze-ceramic, nceda udlulele kuthi. Siyakholelwa ukuba uya kulufumana lukhetho lobulumko