Sad irons, also known as flat irons or smoothing irons, were essential household tools used for pressing clothes before the advent of electric irons. They were typically made of cast iron and heated by placing them on a stove or over a fire. The weight of the iron itself provided the necessary pressure for smoothing out wrinkles.

These irons were a staple in homes from the 18th century until the early 20th century, with designs evolving over time. The "sad" in sad iron comes from the Old English word "sad," meaning solid, referring to the solid nature of the iron as opposed to hollow ones that could be filled with hot coals. They represent a significant piece of domestic history and the evolution of household chores. 941