A bobbin is a part of sewing machine which is cylinder in shape and holds the thread. Bobbins come in many different sizes and may be of metal or plastic. Threading the lower portion of the machine involves the threading of the bobbin i.e., the machine makes the stitch by catching the bottom thread from the bobbin and top thread from the needle to form a stitch. Only use the bobbins that comes with the particular model of the machine as each sewing machine requires a specific type of bobbin.
French curves are templates made from plastic, metal or wood used in manual drafting and to draw smooth curves of various radii in Fashion Designing. It comes in handy for pattern adjustment and common fitting. It is mainly used in measuring armhole, neckline, sleeve caps, pocket contours etc.
Zig Zag is a pattern such that a line with sharp turns go in opposite directions at sharp angles. Similarly, the zig zag neckline consists of abrupt alternate right and left turns.
A Tuck is a stitched fold of fabric that is usually sewn vertically and parallel close together for the purpose of decoration. A very narrow tuck is called a pin tuck.
The foot controller jack socket is used to connect the foot controller plug to the machine and connect the machine to power supply.
