Unlike the ice cubes you make at home that come out of a plastic trays, most ice cube machines as well as the party ice you buy at your local convenience store are cylindrical in shape and have a hole in the middle. But have you ever wondered what’s the purpose of that hole?
Let’s find out.
As it turns out, both the shape and the hole in the middle has to do with the manufacturing process. To make ice, most commercial machines are using an array of short rods to grow the ice cubes on. When the process is finished and the ice cubes are removed a small cylindrical hole remains in every ice cube. (the article continues after the ad)
Here’s a video to better understand the process:
This manufacturing process helps with the cooling of the ice cubes since it increases the amount of surface area and also decreases the thickest part of the ice cube in half. This allows for a more rapid cooling.
Now you know.