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Exploding Glass Tears-- forgot the name, but it's called "(some Austrian city) tears." ?

You get a super-strong tear-shaped glass object that's incredibly strong-- stood up to repeated hammer blows on the bulb end. But when the "tail" is snapped, it bursts into powder. There's a wikipedia entry, but I need the name to find it again. I'd like to try it, but I need better info to avoid long trial/error sessions with hot glass.

Prfesser7 years ago
Prince Rupert's drops can be purchased from Fisher Scientific and others. I don't know the commercial method but I have made then by heating soft glass tubing with a propane torch and allowing the drops of molten glass to drip into a bucket of water. Most of the drops will crack; about one in ten or twenty will come out ok. Trial and error...mostly error. Eye protection, heavy gloves, etc. Prfesser
johnnywgk7 years ago
Just like to say WOW, i like that
Kiteman7 years ago
Prince Rupert's Exploding Teardrops

AKA Dutch tears.

AKA Rupert's Balls.