This is a very special mould to make a large and deep bowl with a wide solid base. A typical serving dish for salads, deserts and other foods. Instead of cutting the glass round try a square piece or a piece with an irregular outline. A smaller circle will result in a more shallow dish, e.g. soup bowl etc.
Recommended Firing Chart
Please Read: The steep angle of the mould may result in an uneven slumping. Reposition the slumped piece and fire a second time. Use a very low slumping temperature with a long soak.