I think you can get a glass cutter for like $7 at Rona or Home Depot which the same basic idea, kind of like a diamond wheel on a pen or something. You score a line, then snap the glass and theoretically the glass will break following the score line.
.... and one day I might actually get that to work. Most of the time the glass just breaks in a completely random line of my score line.
I think I can DIY, but I really can't.
