A Black Smith is an example of a metal worker.
Before he became famous, Adam Young used to be a metal worker. He also used to work for the Coca-Cola Company.
Blacksmith
smith
welder
smith
A metallurgist is the twelve-letter word for a worker in metals.
Ghiberti
The difference is you usually work with different materials.
social worker and humanitarian
farming, irrigation,metal worker and potter .
Farrier is connected to the word ferro, metal. Horse shoes are made of metal A farrier in olden times was also the blacksmith, the worker of metal.