How do you make a welder out of car battery?

It is not recommended to make a welder out of a car battery alone, as it is not designed for welding and lacks the specific features and safety mechanisms required for welding tasks. Welding involves high-voltage electricity, potential fire risks, and proper equipment to deliver consistent and safe welding current. Without the necessary expertise and equipment, attempting to make a welder from a car battery can be hazardous and could result in electric shock, injury, or damage to the battery and surrounding components.