Occasionally a customer will ask me. Is that super glue you injecting in the windshield? My reply is yep super glue on steroids,  just kidding, super glue is way to thick to make its way into tiny cracks, you need a special formula made for windshield repair call UV resin, its comes in many viscosity for different types of windshield repair. Never use super glue it will just clog the repair up.