What is a technique for cutting tempered glass?

To cut tempered glass, first you must clean the glass, heat it in a craft oven to 900 degrees Fahrenheit and allow the glass and oven to cool for eight hours. Carefully use a glass cutter and dowel to cut the glass and separate the pieces.

Use extreme care in cutting tempered glass, and wear protective equipment at all times to prevent injury. After heating and cooling the glass, cut it on a flat surface using moderate pressure in a single, smooth motion. Place a dowel under the cut, and press down on both sides to separate the glass. Use a whetstone to smooth the edges, which will smooth the glass and make it safer to handle. The glass may be tempered again after it is cut.