Cutting roof sheet with wire - GIF

[nova_robotics]

When I was in high school, me and a buddy of mine used an old piece of bicycle brake cable to do this to the windshield on his car. We pushed the cable through the windshield adhesive, one was on the inside of the car and one was on the hood. Then we just pulled the cable back and forth, the whole way around the windshield to break the glue seam. I can't remember if we ended up getting the windshield out in one piece. If I were to hazard a guess I would say we did not.