Manual folding machines are devices used to fold paper and other materials by hand. They typically consist of a flat surface and guides that help align the material for precise folds. These machines are popular in offices, print shops, and schools for creating brochures, flyers, and other printed materials. These machines come in various sizes and designs, allowing users to fold different types of paper, including letter-sized and legal-sized sheets. Manual folding machines are often more affordable than automatic models, making them a practical choice for small businesses and individuals who need to fold materials occasionally.