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Re:Prince Rupert's Drop by huhtenberg on Monday April 15, 2013 @06:12AM (#5550654)
1. Drop molten glass in a bucket of water.

2. Let it cool down, take it out.

3. Hammer the head of the drop and it won't break.

4. Nick the thin tail and the whole thing will explode.

Here's a GIF - http://i.imgur.com/opyMkMx.gif

Here's the vid - http://www.youtube.com/watch?v=xe-f4gokRBs#t=104s

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