Item Name: Medium Doughnut Marble Mold SKU: 850-530B-MD-DON Description: Medium Doughnut Marble Molds are graphite forming tools designed to shape hot glass into smooth, symmetrical marble forms in lampworking. The mold features a doughnut-shaped cavity that allows you to press and shape molten glass into a perfectly rounded marble with a consistent diameter. The graphite construction provides excellent heat distribution and durability, making it ideal for creating uniform marbles for jewelry, display, or artistic projects. The mold is sized at 1.25", making it perfect for medium-sized marbles. How it is used: Gather molten glass on the end of a torch-heated mandrel or glassworking rod. Build up the glass mass to the desired size while keeping it centered and balanced. Heat the mold slightly to prevent thermal shock and ensure smooth glass flow. Press the hot glass into the doughnut-shaped cavity of the mold, rotating gently to ensure even contact. Allow the glass to cool slightly in the mold to set the shape. Carefully remove the finished marble from the mold. Reheat and anneal the marble in a kiln to relieve internal stress.
