I recently chopped my 51 chevy and couldnt really find anyone near me that would cut the windshield glass, all the local glass guys said it was a big deal to cut curved glass. I did a little bit of research and some experimenting with a couple different ways and found it to be pretty easy and risk free to cut using a sand blaster... All you'll need is a small sand blaster (I used one with a 1/4" nozzle) some good quality masking tape (I like the green scotch brand tape) some paint thinner or alike and some patience. Im not very good at explaining things and I forgot to take pictures of the actual cuts I did on my windshield but iv got pictures of a practice cut I did on a spare chevy windscreen I had that worked out well so I will use those and try my best to explain how I did it (pretty straight forward) basically all I did was mask a 1/8" line (both sides) in the glass where I wanted the cut layering the tape about 3 or 4 times so that it was thick enough to hold up to the sand blaster: in this picture I already started blasting but you can see the tape and the paper protecting the rest of the glass. I then slowly blasted away at the line back and forth (trying not to heat up the glass to much) until I got down to the laminate in the center then flipped it over and did the same on the other side... I found that the laminate was really tough and wouldn't cut very well with the sand blaster so I poured some paint thinner down the cut line and it began to get soft pretty quick, I lit the thinners and the two pieces separated easily.. I used some 36 grit sand paper to sand the cut line smooth and I was done! when I cut down my actual windshield the cut curved around but its exactly the same process, each piece of the windscreen only took me about an hour each to do. Sooo yeah..... any questions?