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Summary: Glass breakers and glass groziers are used to break glass for mosaic projects. Learn how to break stained glass for glass mosaic projects in this free video.
Rachel Kadner is a mosaic artist based in San Francisco who has been creating mosaics for over 7 years. She specializes in making mosaics for the home, including mirrors and fine art...read more
"There are two different tools you can use to break the glass. These ones are glass breakers and this one's called the glass grozier. To use the breaker, you line the line of the breaker up, to your score line. You put it on the glass. You want to put it over your hands so it doesn't fall to the ground and break. And you just press down. Right there, it will break it cleanly along your score line. It works the same for curved lines. There's your curve. There are two ways to use the groziers. One way I look at the tool, is it makes a sad face or it makes a happy face. To break glass, you want to make it look like a sad face. You find your score line. You hold the tool right up to the score line. Not crossing it, but right up there. And you just pull down. This is really useful, if you have a very thin score line. Especially about a quarter inch or less. Because these won't work for a very thin score line. With your groziers with a happy face, that's for really rounding out edges. And what you do is, you just crunch down on the edges. And you can make rounded edges with that."
eHow Article: Breaking Glass for Mosaics