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技法
dam
Japanese: ダム
A frame (made of fiberboard, etc.) that prevents molten glass from spreading. It helps the thick piece retain its shape.
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A dam is a frame that prevents molten glass from spreading sideways. It is made of fiberboard or similar material and is used to maintain the shape of the piece when firing thick pieces.
A release agent is applied to prevent the glass from shrinking and sticking to the edges.
This entry is written in Japanese by Rei Chikaoka and translated for readers outside Japan. If something reads oddly, the original is the source of truth.