SATURN - Espresso & Sake Cup

SATURN - Espresso & Sake Cup
http://shpws.me/hbcS
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Many thanks to TechyBen for suggesting this spin-off of my
Flying Saucer Espresso & Sake Cup
http://shpws.me/h10x
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Those rings look thick and heavy, I'd think they'd want to sag during production. Maybe make the rings less pronounced?

That's right, they look thick and heavy , but in fact, they are corrugated.