Ii-microspheres zeglasi ezingcwele ziye zavela njengento entsha ebalulekileyo kwiinkqubo ezahlukeneyo zokuvelisa, ngakumbi kushishino lweglasi kunye ne-ceramics. Ezi ndawo zincinci, ezilula, ezenziwe ngeglasi, ibonelela ngoluhlu lweepropathi eziluncedo ezenza ukuba zithande ngakumbi phakathi kwabavelisi. Iimpawu zabo ezikhethekileyo, kubandakanya ukuxinana okuphantsi, ukususwa kobushushu, kunye nokususwa kweekhemikhali