At one time, glassworkers who fled the region and were caught were subject to heavy fines and five years at the oars of a galley with their feet in irons.
Kaut arī tika veikti šādi piesardzības pasākumi, bija stikla pūtēji, kam izdevās nelegāli izceļot uz citām Itālijas vai Eiropas pilsētām.