A professional who tends machine that folds precemented edges of shoe parts, such as insoles, platforms, quarters, and vamps to strengthen and smooth edges. Responsibilities include:

• Positions part against guide and under presser foot and folding finger, or between rollers of machine.
• Releases pedal that lowers presser foot, starts machine, and guides part under presser foot and folding finger or between rollers to fold and press edges of part.
• May repair uneven folds by pressing with hot iron.
• Important variables may be indicated by trade name of machines used.