Teena Stewart of serendipitinistudio.com demonstrates bottle slumping. Make a recycled glass cheese tray from a large slumped wine bottle. In the video I forgot to suggest you coat your kiln shelf with 4 coats of primo primer or use bullseye glass paper made for preventing glass from sticking. I've had people ask me for glass slumping firing info so here's one I've found that works for multiple things. Try the deep slumping schedule for this project. https://www.slumpys.com/Company-Information/Company/Slumpys-Firing-Schedule
