forge fire in this type of forge is controlled in three ways: amount of air, the volume of fuel, and shape of the fuel/fire.

Over thousands of years of forging, these devices have evolved in one form or another as the essential features of this type of forge:

* Tuyere--a pipe through which air can be forced into the fire
* Bellows or blower--a means for forcing air into the tuyere
* Hearth--a