Which chisel is used to make circular cuts in metal?

The round chisel is specifically designed for making circular cuts in metal. Its unique shape allows the craftsman to create curves and circles efficiently, which is especially important in metalworking. The rounded edge engages the material in a way that facilitates precision in shaping and detailing, making it essential for tasks that require rounded forms or intricate designs.

The other chisels mentioned serve different purposes: wood-cutting chisels are optimized for use in wood and cannot achieve the same effectiveness with metal; cold chisels are used primarily for cutting or shaping metal but typically produce straight cuts; and framing chisels are designed for joining together wooden frames and do not cater to the specific need for circular cuts in metal. Thus, the design of the round chisel clearly makes it the appropriate tool for the task described.