Tiki Central / Collecting Tiki / Why do vintage mugs have concave bottoms?
Post #264839 by thejab on Mon, Nov 6, 2006 12:35 PM
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thejab
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Mon, Nov 6, 2006 12:35 PM
I'm in agreement that it's for strength, because if a glass or ceramic mug gets hot from washing, and you put ice in it, the bottom may weaken and bust. I've seen this happen with cheap glassware. |