Try our 16 guage stainless steel slumping mold S shaped form.Our S curves will never collapse under the weight of the glass, even in the heat! Slump your glass over the curves to create wall pieces or sculptural glass art. A 1/2 in. lip is provided at one end to help balance the glass. See all of our S and double S curve styles: VN10, VN13, VN16, VN20, VN2119, VN30D, VN16D and VN22D. (number of the style represents the size). FIRELITE FORMS was the first to offer the S curves to the glass fuser and slumper way back in 1999. Since then we have added to the popular line now offering 8 different sizes for your slumping needs.