Freezable Can Cooler

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Summer has arrived, and now you can enjoy the ultimate can cooler!

Originally designed for cans, it also accommodates 12oz glass bottles, although they may fit loosely.

Featuring two openings at the top, one is designed for adding water between the inner and outer walls, while the other allows air to escape as you fill it.

Be cautious not to fill it to the brim, as water expands when frozen. Once frozen, securely close both openings with the lid to prevent spills as the ice melts.

To ensure proper sealing, each lid requires a 3x1 o-ring.

For added convenience, you can 3D print a funnel to assist with filling.

Cheers to enjoying refreshing beverages in the summer sun!

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Obs:

Water is not the best choice for this cooler as it expands when frozen. However, if you don't fill it to the brim and leave the lid off while inside the freezer, you should be okay. Just remember to replace the lid when using it to prevent any water spillage while enjoying your favorite drink.

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Experiment:

I conducted experiments to assess the effectiveness of this product. I placed two soda cans in the refrigerator for a few days to ensure they were at the same temperature. After removing them from the fridge and opening them, I inserted one into the can cooler and left the other one beside it. I then began measuring the temperature of both cans from the moment they were taken out of the fridge and continued doing so for over an hour.

The can exposed to ambient air began to warm up immediately, going from 6.2°C to 11.4°C after 1 hour (no cooler). However, the can inside the can cooler progressively became significantly colder over time, going from 6.2°C to 1.8°C after 30 minutes and 1.3°C after 1 hour (with cooler).

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Printing tip:

Print it with 4 wall/perimeter, if using 0.4mm nozzle, to guarantee you get solid walls.