Abstract: A hem folding attachment for folding a reinforcement member into the end of a strip of material prior to insertion of the folded end of the strip of material into a hem forming maching. The attachment including a frame or table having a guide mounted on the frame for aligning the strip of material on the table and a hem stop mounted on the frame for engaging the end of the strip of material. The reinforcement member is aligned on the top of the strip of material in a spaced relation to the hem stop. A folder bar is mounted on the frame beneath the strip of material for movement upwardly into engagement with the strip of material to fold the end of the strip of material around the reinforcement member. A shuttle is moved into engagement with the reinforcement member and folds the end of the strip over the top of the reinforcement member. The shuttle includes a clamp for engaging the reinforcement member prior to the movement of the shuttle transversely to feed the strip into the hem forming machine.