We used double tempered Masonite to make the bats and the master they fit in. When they are new you don’t even need to underwire the piece. It will pop off the bat during drying and leave a nice sleek bottom
You keep the glaze away from the bottom half of the projects or make bisque “cookies” for them to rest on while they glaze fire. They can’t touch each other during the glaze firing process or they’ll be vitrified together
