I wish I could share a picture.
My ice cube tray made ice with thin spires of ice shooting up out of it?
What which craft is this?
In: 3
I forget the specifics, but iirc it happens when an ice cube begins freezing around the edges while the top is still unfrozen. The forming ice “squeezes” the water left in the middle up and out of the top of the cube, which results in the spike.
They’re called Ice Spikes and [there’s a whole wikipedia page about it.](https://en.wikipedia.org/wiki/Ice_spike)
Basically:
* The top of water freezes first (because that’s what’s exposed to the freezer, plus ice floats on liquid water), EXCEPT
* Water expands as it freezes
So the surface gets almost completely frozen over, and then as the inside of the cube starts to freeze, the expansion has nowhere to go except out the remaining hole in the ice on the surface. So it forces water up and out the small hole, where of course it cools and freezes, generating the spike.
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