Another Aunty sent me this; this time all the way from Singapore.It was a video, but I'm too tight to gobble up several Meg on Google cache, so you get just a frame. Ain't brain surgery.
Now, there are a few caveats. I have no clue where you get dry ice. And it looks dangerous if the thickness of that glove is anything to go on.
Plus it may not work, but seemed to on the video (like those are always true). Certainly I can see who creating localised colling would pull the metal tighter.
Call this one a 'possible'. I'll await confirmation before putting it on site.
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