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by JasonCEC 1301 days ago
Shockingly strong! I've always wanted to see the glass blowing process at their factory in Tokyo, but they've been closed for tours while upgrading for at least ~2 years before covid (when I was frequently in Japan).

My understanding is that they use some type of cold annealing process that strengthens the thin glass.

I've not managed to break one in 4 years of dinner party use.