Pot Melt Bowl Assortment 1 contains all six patterns with circular holes! You'll be able to create several different patterns in your melt with these six styles. Stack your fusible scrap glass into this sturdy ceramic pot melt bowl to create a unique marbled glass. Rest your glass filled bowl on Slumpy's Pot Melt Support (SM-8400) inside the kiln. Once hot, the glass will flow out of the opening and onto a line kiln shelf below.