Sometimes large metal cauldrons (a "wash copper", even when not made of that metal), were filled with fresh water and heated over a fire, as hot or boiling water is more effective than cold in removing dirt. A posser could be used to agitate clothes in a tub. A related implement called a washing dolly is "a wooden stick or mallet with an attached cluster of legs or pegs" that moves the cloth through the water.
Sometimes large metal cauldrons (a "wash copper" even when not made of that metal) were filled with fresh water and heated over a fire as hot or boiling water is more effective than cold in removing dirt A posser could be used to agitate clothes in a tub A related implement called a washing dolly is "a wooden stick or mallet with an attached cluster of legs or pegs" that moves the cloth through the water