[burtonmc]

First of all u push on the inside of the windshield to make sure the crack is at a stopping point.....then you drill a hole bout a 1/16 of in. past the end of the crack. i drill slowly and then just use my drill to make the mini bullseye....then push on the inside again and run it into the mini bullseye...it should make a clicking sound.....then a drill another mini bullseye next to the other one. just in case in goes through the first one......works great for me...i may have one fail maybe once every 8 to 10 months. but i just repair it where it spreads from the last bullseye.