Question

Blacksmith heats the iron till it becomes red hot​

Answer 1

Answer:

a blacksmith heats the iron tell it becomes red hot so that he could hit it with hammer and make the piece of iron in its desired shape

Answer 2

Answer:

Blacksmiths put solid hard iron into a forge and heat it at a temperature high enough to soften it. After the heated iron turns red, It is then pulled out with tongs and hammered to form a shape. Because if you don't, the iron will turn solid hard as before, and changing its shape then would be impossible.