This disclosure enables various tools for folding pieces of sheet metal and methods of manufacture and use thereof. For example, some of such tools include a first pair of jaws spaced apart from each other at a first distance, a second pair of jaws spaced apart from each other at a second distance greater than the first distance, and a body spanning between the first pair of jaws and the second pair of jaws. By having the second distance being greater than the first distance, a user may use the body to form a primary bend (e.g., a hem) on a piece of sheet metal via bending the piece of sheet metal via the first pair of jaws, or vice versa, and then a secondary bend of the primary bend to form a desired shape (e.g., an S-shape) on the piece of sheet metal via the second pair of jaws, or vice versa.

A flanging tool has a working face which is designed to deform a flange of a metal sheet. The flanging tool is moved along the flange while the working face is in touching contact with the flange, wherein a spatial extent of the flanging tool in a direction perpendicular to the working face is within the range of 1 mm to 10 mm, and preferably 4 mm.

An ergonomic sheet metal hammer is disclosed, featuring a multifunctional design that enhances usability and efficiency in sheet metal work. The hammer includes a built-in drive slot for precise bending of sheet metal drives, an ergonomically configured handle to reduce fatigue, and a handle with a removable cap for storage. Additionally, the hammer head incorporates a 11 measurement for quick reference and is marked with various measurement indicia for versatility in use. The invention aims to provide a comprehensive tool for sheet metal workers, combining functionality for bending, measuring, and marking in a single, ergonomically optimized device.