I used the hemmer foot a lot during my apprenticeship.
Bernina rolled hem foot.
Yards and yards of bridal gown seams were done with this foot.
The result is a narrow slightly three dimensional hem.
Straight stitch hemmer 62 the width of the channel in the sole of straight stitch hemmer 62 corresponds to the width of the finished hem making this presser foot ideal for narrow hems.
The channel on the sole of the presser foot is the size of the finished hem.
Zigzag hemmer foot 63 is an expert when it comes to double turned hems.
I can recommend the hemmer foot sometimes called rolled hem presser foot especially for seams on lightweight fabrics.
Short description of how to use the rolled hemmer foot.
A special guide on the bottom of the foot holds the fabric together securely before and during the sewing process and ensures even feed of the material.
Roll and shell hemmer 68 is equipped with a 2 mm wide guide.
With the aid of a scroll it turns the fabric under twice holding it together securely in the channel guide in the sole of the foot until it is sewn.
Zigzag hemmer 61 turns the fabric edge under twice and sews it with a zigzag stitch to produce a narrow sturdy hem.
The hems range from 2 mm 6 mm and work on light to medium weight fabrics.
The hemmer foot is the tool for even narrow rolled hems.
This produces a narrow sturdy hem which in combination with the corresponding stitch type creates the popular scalloped or shell hem.
The scroll on the front of the foot turns the fabric under twice then sews it with a zigzag stitch.
The sole of the bernina hemmer foot.
A scroll on the foot feeds the fabric edge from the front and turns it under twice all in one operation.
A guide in the presser foot sole guides the turned under fabric to the needle hole where the fabric is sewn with a straight stitch into a sturdy 4 mm wide hem.
The finished hem then easily advances underneath the foot enabling smooth sewing.
Roll and shell hemmer 69 is a special presser foot for hemming soft fabrics such as tricot.