Success! The large piece is cut. I have to give credit to ThreeE for linking that video. I focussed again on tapping the top and bottom of the score and this time tapped it about a thousand times and...

Ok, some success. Did a few more scores and really focused on tapping the underside of the score. Was able create a deep run accross the length of the score, then snapped it with the notch on the...

ThreeE: Thanks. Saw that video. I've already tried tapping all long the score line with the ball end... hitting it progressively harder and harder until I'm slamming it into the glass with no...

I have a 60" wide mirror that I need to cut 2" off. The mirror is 1/4" thick. I have a few pieces of scrap mirror that are 1/4" thick as well that I've been practicing on.

EVERY time I try to cut...