Zatulovskaya glass cutter with carbide rollers can return to its former performance. Usually, the cutting edges of the rotating rollers wear unevenly. If they are fixed in position, in which the unworn portions of the edges are out, the tool will work like new. For this purpose the axes of the rollers it is necessary to shorten a file by about a third. Then you will be able to fix them with the screw. The proposed method I tried when I was redoing the tank. Even thick glass cut easily, especially if you hold them for 5-10 minutes in the cold.
F. SKAKUN, g. Berdichev, Zhytomyr region.