illluck wrote
As far as I know, Yunzi is sort of a glass-like material. Various materials (I think the precise make up is secret) are mixed in a powder and melted and then cooled. Sounds like what you are describing is a stone that did not get melted fully.
Lead was one of the components (for ...
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- Sun Jun 09, 2013 2:03 pm
- Forum: Gobans and other equipment
- Topic: Yunzi biconvex stones -- powder inside?
- Replies: 14
- Views: 14010