windshield cutting

does anyone know how 2 cut windshields lol i wanna do it myself but i dont know any "tricks" if there are any i have it marked n all but at a stand still from here

hey i helped a guy do a 6 in chop on a 50 merc and we took turns with a sweet belt sander it never cracked! ............wear a resperator!!!!!!!!!!!!!!!!!!!!!!!i dont know if thats how it supposed to be done though .its nice you just keep tryin till it fits !

ive got a buddy that i believe cut his with a tile cutting disc/wheel/whatever u call it!

well i got an old school glass cutter....well more of a glass scorer but lol a shield is 125 round here n i wanna gettin it lookin halfway good lol yeah im takin 6 inches off my stock s-10 windshield n o think its gonna look wicked cut that much