The twin needle is suitable for any sewing machine designed for a zigzag seam. This device allows you to obtain finishing double stitches. The result is a zigzag, elastic, not very strong decorative seam.
How the twin needle works
The removable device consists of two needles mounted on one holder. The twin needle sews three stitches at the same time: two on the right side and one on the wrong side. There are several types of devices. The most popular are the versatile fittings that fit almost all fabrics. For sewing knitwear, super-stretch designs are used with a rounded tip that expands but does not pierce the fabric. Needles for decorative stitching of jeans are produced separately.
The unit can only be installed on sewing machines designed for sewing zigzag seams. Twin needles cannot be used with conventional lockstitch machines. Modern sewing machines are equipped with double bobbin stands as well as twin thread guides and thread guides for threading the upper threads.
Terms of use
Before using the twin needle, be sure to loosen the lower thread tension and thread the upper threads correctly. The bobbin thread is pulled out and held in place by the two upper threads at the same time, so too tight can cause it to break. In order for the stitch to come out high-quality and even, you should adjust the tension well and select the lower thread in thickness (one number less than the upper one).
There are several options for attaching a second spool of thread to the eye of the second needle. Some sewing machines are equipped with two stands, others are equipped with a separate additional stand. Each top coil is mounted on a separate holder. The two upper threads pass together through all the holes and levers, and only at the bottom, at the base of the needle, do they separate. Thread the right needle through the right needle and the left thread through the left needle. If there is only one thread guide in the machine, then only the left thread passes through it, the right one passes next to the thread guide and is threaded directly into the eye of the right needle.
When buying a double needle, you should take into account the design features of the sewing machine. Look closely at the stitch plate of your machine and measure the width of its hole. The instructions should indicate the maximum width of the "zigzag" performed by your machine. Particular care should be taken when selecting twin needles for machines with a holder offset from the center of the needle hole. The wrong choice can lead to the fact that the needle will not enter the hole during sewing, will hit the sewing plate and break very quickly.
