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>If you time it right, 90% of the water freezes, and the water impurities pool at the bottom

And even if you don't, worst case you end up with a cloudy end on your clear ice that can be easily removed by rubbing it on an aluminum sheet pan



Or just passing the cloudy bit under hot water. Melts like a charm.


I'm not sure it will be so easy to get the ice out if you let it freeze solid.


Well luckily there’s an easy solution for that as well: letting it sit for awhile.


Aluminum is a fantastic heat conductor. You can slice ice using a non-sharpened aluminum flat, easily.




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