The cauldron bubbled on the fire.

That's the pot calling the kettle black.

The cauldrons are used to prepare magical potions.

Boilermaking is an art that consists of shaping metals to make parts or structures.

The boiler shops are workshops for the manufacture of boilers and metal parts.

The tinsmith makes pots and pans.

The boilermakers made a large steel tank.

The chaudronnières manufacture metal kitchen utensils.

The female metalworker made a magnificent copper cauldron.

The chaudronnés manufactured metal parts.