How is a tin opener assembeled?

A tin opener, typically a can opener, is assembled by connecting the main components: the handle, the cutting wheel, and the lever. The handle is attached to the lever, which pivots and allows the cutting wheel to puncture and cut the can's lid as the user turns the handle. The cutting wheel is secured to the lever and is designed to rotate smoothly while piercing the metal. Finally, all parts are fastened together, ensuring they operate efficiently and safely.