I am new to fusing. I bought a kiln and a wavy slump plate mold. Do I have to put anything on the mold beside glass before firing. I am anxious to get started. No classes in the area. thank u for your help How do I know what temperature to set the kiln at. I started with a microwave kiln and had a lot of fun and success with it but limited to what I can do so I bought the larger kiln.