A screwdriver shall not be used as a ______.

Using a screwdriver as a chisel is not advisable because each tool is designed with a specific function in mind. A chisel is intended for cutting, carving, or shaping hard materials like wood or metal and has a sharp cutting edge to efficiently accomplish this task. In contrast, a screwdriver is meant for driving screws and lacks the structural integrity and design features needed for effective chiseling. Using a screwdriver in this way can lead to tool damage and unsafe working conditions, as the blade can slip or break under the stress of chiseling. It's important to select the appropriate tool for the task to ensure both effectiveness and safety.