Sheet metal manual folding machine is a tool used to bend and fold sheet metal by hand. It typically consists of a flat surface with a clamping bar that holds the sheet metal in place, and one or more bending bars that can be adjusted to create different angles and shapes.

Manual folding machines are often used for smaller projects or custom work where precision and control are important. They are also popular among hobbyists and DIY enthusiasts who want to create their own metalwork.

Overall, a sheet metal manual folding machine is a versatile and essential tool for anyone working with sheet metal.