How was a knights armor made?

It took about 4 months for a blacksmith to make a knights armor, busy shops could get six suits out per day. At first they would have to put it in fire to make it easier to work with. Then they would hammer it over an anvil to make it different sizes and shapes until they were satisfied with the piece. After that, they would stick the piece of metal into water to strengthen the armor. And finally before selling the armor, they would add designs to it making the final and coolest touches.