> On the subject of doing clever things with glass - does anyone
> know how they make those ornaments which have '3d engravings'
> inside a block of glass? They appear to be made out of sets of
> 'dots', so I'm guessing something like  focussed pulsed lasers
> or ultrasonics to create local micro-cracking.

Probably some surgeon fed up doing kidney stones and
couldn't be bothered trying to get his handicap down anymore

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