Learn how to sew a catchstitch. A catch stitch creates a flexible hem with some give. This is appropriate for sewing hems on skirts… neck lines… any hem that needs some flexibility. The catch stitch is used to finish a hem or tack facings. The thread catches a thread or two on the hem, then on the garment, crossing itself on each half stitch.You must be a subscriber to view the rest of this content. Click here to sign up now!