Use your Microwave to Fuse Glass! Fires glass quickly and easily. Place glass project on the kiln washed base of the kiln. Set the lid on and insert the entire kiln into the microwave oven. In a few minutes, the project piece is fused. Cool to room temperature on a heat resistant surface. The entire process is completed in about an hour. Use to Fire; Fusible Glass, Dichroic Jewelry, PMC Silver (Silver Art Clay), Metal Enamels and Small Ceramic Glazed Pieces. Specifications: - Dimensions: 3.25" H x 4.5" D - 2.75" internal fusing platform - Max Temperature 1650 degrees F (898 degrees C) - Requires Metal Interior Microwave Oven with about - 800 Watt Rating and at least 8" tall inside