Distilled water, on the other hand, can cause your iron to corrode more quickly due to the way water molecules combine with carbon dioxide in the surrounding environment. [2] X Research source Check your manufacturer’s suggestion. Some irons are safe to use with unfiltered tap water, while others are safe to use with distilled water. When in doubt, a 50/50 blend or filtered tap water would be your safest bets.

Knit fabrics stretch easily if you push and pull the fabric by moving the iron while it is hot.