- Loosen the needle clamp screw.
- Pull the needle down and out of the needle bar.
- Install a new needle. Push until the needle stump touches the cap.
- If you are using an industrial sewing machine, turn the needle so that the scarf is on the same side as the hook on the machine.
- Tighten the needle clamp screw.
If a needle breaks, the patient should ask to stay still and not move to prevent the damaged part of the needle from penetrating deeper into the tissue. If part of the broken needle is still on the skin, he uses forceps to remove it.
Your sewing machine is suspected of being faulty. If the thread does not run properly through the tension and thread guides, it may stretch during sewing. It can pull out the eye of the needle and break it. A sewing machine with poor thread is one of the most common causes of needle breakage.
- It is recommended to change the needle every 3 full bobbins or every 2 tangled bobbins.
- It is also a good idea to change the needle after each job or when using a fabric that naturally dulls the needle, such as leather or heavy fleece.
First, make sure that the bobbin winder (above the machine) is moved to the left as you sew. If it is not in the correct position, the needle will not go down and the bobbin thread will not be wound. If the timing is incorrect, the upper thread will not touch the bobbin thread in time to form a stitch.
Choice of needles
The flat side of the needle continues to grip the needle bar so that it can be held in place. Then, when you thread the needle, you will feel the groove in the needle, the thread passing through the side of the groove. Some singers have an arrow on the neck plate to show how to thread the needle.
There could be several reasons why the upper thread keeps breaking. The upper thread tension may be too tight. Adjust the tension to the best thread tension setting or not. Make sure the spool is installed correctly and use the correct spool holder for the size of the spool.
The most common types of needle tips are pointed, spherical and universal. Sharp needles are suitable for all fabrics. Universal needles can be used with woven or knitted fabrics. The tip of a universal needle is sharp, but also slightly rounded, which gives it the properties of a pointed pen and ballpoint pen.
Why does this happen
Tangle of bobbin thread
If the same thread keeps dropping, you have a wrong thread. If the other thread breaks after replacing it, you may not have threaded it correctly. The most common cause of thread breakage is an old needle, but since it’s a twin needle and you haven’t used it often, this seems unlikely.
A swollen vein occurs when a needle is inserted into the vein and ruptures. It can sting and blister, but it is usually a small lesion that disappears within a few days.
The needle has a stainless steel needle attached to a hub. It is not magnetic and needles made with it cannot be detected by metal detectors currently used in meat processing plants, nor other disposable needles made with metals and alloys. Hundreds of millions of disposable sticks are used every year.
One study reported that up to 20 percent of people who injected themselves with drugs had a broken needle when they were injected. Complications of broken needles are the formation of abscesses and holes in the large arteries, which can lead to life-threatening bleeding complications and, in this patient, pneumothorax.
These metallic foreign bodies remain in the body and, if not removed, can cause wound infections, pain, bilateral infections and the onset of sepsis. However, when the foreign material in the small metal enters the human body, it is very difficult to find due to human muscles and blood.
These reports and our study have shown that needle fractures do not cause exceptional pain. Patients or parents usually notice the needle breaking when preparing for the next injection. As the needles become thinner, it becomes more difficult to spot broken needles as they will not cause scarring.