What traditional crafts in history have been gradually forgotten with the development of science and technology?

I will call people who work in shovels, pots, pots, bowls, altars and shovels "shovelers". Because, no one can tell the name of the craftsman in this line, and the names are varied, some are called "shovel", some are called "shovel cylinder" and some are called "repair cylinder". Anyway, it's all people who fix cans and fill cans.

Although the shovel is humble, it is also one of the 360 lines. In the old society, repairing jars and altars was an unpopular occupation. Business was the most prosperous in the 1930s and 1940s, because people's lives were particularly hard at that time, and it was not easy to buy a new altar. So make up if you can, and make up if you can. Because repairing a jar or jar is one-fifth of the price of buying a new jar. It is impossible for this industry to make a fortune, but it is still possible to make a living.