Blacksmith wasn't a major job until the 1800s when industrial revolution made the job possible. In the 1800s a blacksmith should made nothing: everything was made in a factory and the blacksmith just did the final fitting or repair work. Sure they could and did do some custom decorative stuff, but only the rich could afford that.
Before then a city might have a couple in employee of the noble to make armor or swords, but the common person did without, or handed down tools until they couldn't be used at all. In a village a blacksmith was a side job of a talented farmer, but it couldn't pay the bills as nobody could afford to buy much custom made metal.
In Chaucer's Canterbury Tales there is a smith in the Miller's Tale, who worked on farming equipment: plow harness, shares, and coulters. (Unless my Middle English is more forgotten than I thought.)
Sure there were self-learners that expanded their trade to supply others for coin. However blacksmithing was certainly a skilled artisan / tradesperson role from antiquity to medieval times that operated on an apprenticeship scheme. One often had to dedicate themselves to it exclusively.
Farming tools? Wood working rools? Tools for builders? All made a blacksmith of sorts. Those making arms and armor where a highly specialized bunch.
That being said, arms manufacturing was a very well developed industry during tue middle ages. Including general contractors, cuttlers, in case of weapons that coordinated the work of the people making the blades, the handles, the scarbords and dis the heat treatment.
If anything, the classic blacksmith went into decline during yhe industrial revolution. With tools, weapons and everyday stuff being mass produced in a factory somewhere.
Weren't bladesmiths a separate profession? I was under the impression that blacksmiths were your run of the mill iron workers, especially considering that a good blade could take far longer to produce than a blacksmith might be able to devote time to.
Slapping a wedge of metal on a pole and calling it a pike could be done by anyone though, I suppose.
Before then a city might have a couple in employee of the noble to make armor or swords, but the common person did without, or handed down tools until they couldn't be used at all. In a village a blacksmith was a side job of a talented farmer, but it couldn't pay the bills as nobody could afford to buy much custom made metal.