How long it takes for ice cubes to freeze depends on the cooling capacity of the refrigerator and the rate of heat loss. The faster the heat loss, the faster it takes to freeze. Filling water containers is generally faster with metal ones and slower with plastic ones.

Generally, water at room temperature freezes in about 3 hours, while warm water takes about 2.5 hours. Warm water freezes faster, because warm water loses heat faster, so warm water freezes ice cubes faster, and the less water, It will also freeze into ice faster, and the freezing time of water in metal containers is shorter than that in plastic containers.

Precautions for freezing ice yourself:

When freezing ice yourself, water usually solidifies from the outside to the inside during the freezing process. When the outside is frozen solid, the inside is still frozen. Covered with some air and water. When the temperature drops, the air will turn into bubbles and escape outward. If the outside has frozen into ice, it cannot escape. In the end, a large amount of white mist and bubbles will appear in the frozen ice.

Therefore, we want to reduce the amount of dissolved air in the water as much as possible and allow more bubbles to escape before freezing.