Another arsenal in your blacksmith supplies is a blacksmith leg vise. When buying a vise you should buy a leg vise instead of a bench vise. A blacksmith leg vise has a “leg” that can be extended and anchored to the floor to give it strength and stability. Most leg vises are steel (not cast iron) and are made to take the abuse of heavy hammering of metalwork while being held in the vise. You should be able to find a blacksmith leg vise at your local flea market. Most modern leg vises are very expensive. When choosing a leg vise make sure that the jaws are at least 4-5 inches wide and that the jaws are not damaged and line up evenly. Because the vise has a leg it can be mounted to more locations than a regular bench vise. You can mount a blacksmith leg vise to a tree stump, a post or a workbench. The leg vise can be used to bend iron at 90 degree angles, twisting and as a third helping hand.
Below is a short video of a Columbian blacksmith leg vise: