Sewing machine began to skip stitches, why?
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Causes for which the sewing machine skips stitches can be different. from the wrong mode of operation of the device, to deformation or blunted needle sharpness shuttles. Such a malfunction is inherent in machines of all domestic and foreign manufacturers, from inexpensive Chayka machine to elite semi-professional machines Singer, Juki, Janome or Jaguar.
The masters of A-Aisberg Service Center will repair sewing machines of any complexity level, regardless of the brand, model or year of manufacture. All work is carried out at the customer’s home without transporting equipment to the shop. To call the master, call on 8(495) 213-33-33 from 7:00 to 23:00 any day (including holidays and weekends) or leave the online application form on the site.
How to sew knitwear?
If the machine does not sew knitwear, you need to do the following:
- Buy a special sewing needle. On what needle you will sew knitwear depends a lot. Special needles are so called. knitting needles. Their peculiarity is the rounded tip, which does not pierce the fabric, and spreads the fiber. When sewing knitwear with needles, defects can occur.
- Using the top feeder for the sewing machine. This is a special device, having the form of a plate, which contributes to the uniform advancement of the material. The feeder is mounted above the needle plate. It is needed in cases where the foot strongly displaces the parts to be sewn. Knitwear is strongly drawn, and therefore without the use of aids in some cases can not do.
- You can align the material feed by means of paper sheets. They are placed under the bottom fabric and under the foot. After joining the parts at the slices are carefully trimmed and removed.
- Buy polyester thread. What kind of thread is used determines the quality of the stitch and its durability. Luckily, polyester thread is the most common thread for sewing machines, so it’s not too difficult to buy it.
Whichever of the above options you choose, it is advisable to initially stitch on a small piece of material. Double fold it beforehand. This method will allow you to adjust the sewing machine by adjusting the thread tension, stitch length, etc. д.
High deflection angle of the buttonhole
The desired stitch loop is formed on the opposite side of the hook. A higher angle increases the chance of a skipped stitch, as does a too small loop. What to do in this situation? Try to angle the needlewheel correctly, being careful not to damage it. In addition, the part can be upgraded by sawing a new flat on it. Choose an angle that is appropriate for your machine and perform the necessary procedure.
The main cause of skipped stitches
If the Janome or other sewing machine makes skips in the stitching, then the fabric instead of a large number of stitches you can see a straight section of thread. The main reason for this is that the hook of the hook when moving down can not catch the thread coming out of the eye of the needle. Missing stitches in a machine stitch happens if the seamstress does not pay attention to the defect in time. There may be various reasons for such a malfunction. In order to restore the correct operation of the sewing machine, you need to understand why the sewing machine skips stitches when sewing.
The main types of faults and troubleshooting
All machines, regardless of the type of design (electric, manual, mini-machines), form a stitch by the same principle. It is a complex and precise process of interaction between the needle and the shuttle device. In its lowermost position the hook catches the thread and forms a stitch, which is tightened when it is lifted to the upper position. The most important parameter is the distance between these two elements, which is within 0.2-0.3 mm. If the gap is larger, the thread will not catch and there will be a skip in the stitching.
There are many reasons why the sewing machine does not stitch. But among them, the most common ones can be distinguished:
- wear and tear of the mechanisms;
- Failure to follow the rules of selecting a pair of “needle-tissue”;
- Improper thread tension;
- Features of different models of machines.
In some cases, the malfunction is easily eliminated by the owner. But in some situations it is recommended to contact specialists of the technical center.
Types of techniques and features missing stitches
Despite the many common malfunctions, there are breakdowns specific to each type of machine.
There are three basic models of machines used in the domestic environment:
If a standard electric sewing machine does not sew, probably broke down the drive or motor. It is recommended to check the integrity of the power cord, the correctness of the connection and the presence of current in the network.
Mini-machine is considered a scaled-down copy of the standard device. Among the world’s famous brands can be found compact models Jaguar, Janome, Pfaff, Juki and other manufacturers. Usually such devices overheat the motor during prolonged continuous operation or have problems when working with dense fabrics (tarpaulin, cottons, leather). To avoid malfunctioning, it is recommended to follow the manufacturer’s instructions clearly, carefully select the fabric, thread and needle, as well as not to overload the electric drive.
Handheld machine has compact size, runs on batteries and is often used for simple sewing or as a training model for children. If a manual sewing machine does not make a stitch, then most likely the hook mechanism is out of order. Given how much such a model costs and not always a quality assembly, to repair it makes no sense and is easier to buy a new or order a complete standard unit.
Mechanical wear and tear
If an old appliance begins to skip stitches or simply refuses to sew, the source. mechanical wear and tear on the accessories or an increase in the gap between the spout of the hook and needle. Remove the defect by replacing the appropriate accessories. In some cases, it may be more appropriate to buy a new machine than to invest in expensive spare parts.
If sewing is very slow, or if you hear squeaks, clanking noises, or other noises, it could be that the old mechanisms need lubrication. You can perform this process yourself, without a specialist.
Problem with thread and needle selection
For the work to be stable, you should intelligently select the thread and needle depending on the type of fabric. The wrong choice quickly affects the sewing quality of dense materials (like tarpaulin, leather or cotton). A needle that is too thin cannot physically pierce the fabric and form a stitch, which leads to uneven stitching, skipping, and even breaking the pattern.
There is a common problem when sewing knitwear that is common to all machines (Veritas, Merrylock, Bernina, Brother, etc.). Knitwear is a stretchy material that has a particular structure of interlacing fibers, which creates difficulties when working with it in domestic conditions. You can solve this in the following way:
- buy a special “knitting” needle with a rounded end. It will gently pull the fibers apart, preventing them from being damaged;
- install a conveyor belt. this is a special device that ensures the uniform movement of the fabric, preventing it from stretching and wrinkling;
- Use polyester yarns, which are good for knitwear.
Carefully selected accessories for the specific material ensure stable operation of the device and high quality of the joint.
Incorrect thread tension
Thread tension plays an important role in stitch formation. When there is too much tension on the top one, the hook does not always form a loop, and skips appear on the seam. Therefore, it must be threaded according to the machine manufacturer’s recommendations in the instruction manual.
Check the tension and correct threading of the upper and lower threads by yourself, without calling a service engineer.
Why the gap between the needle and hook point is increasing?
Incorrectly marked needle. Each type of sewing machine has its own needle. Despite all their external similarity, needles differ in the shape of the bulb, the length of the blade and the form of its sharpening. Therefore, if you take a needle that does not match the parameters of your machine, the gap will not be the same and the stitches will inevitably skip. In the manual for your model of machine there are numbers of sewing needles that fit it by parameters. Do not disturb them, buy only needles of this make and from a reputable manufacturer. If you don’t have a manual, take an old needle that didn’t malfunction with you to the store and buy the same one.
Blunted needle. Needles should be changed often, ideally after every piece of fabric. A blunt (in fact, frayed) needle tip not only tears fabric, but can also degrade stitch quality by increasing the gap and starting to skip stitches. The same is true for bent needles and even more so for a broken needle tip.
Deformation of parts. If you run the machine continuously for an hour at an average speed of 300 turns per minute, you get more than 35000 strokes on the hook and, accordingly, the hook suffers a lot. The parts will deform and the gap will increase because of it.
High deflection angle of the buttonhole
The loop required for the stitch is formed on the back side of the hook. A higher angle increases the chance of skipping a stitch, as does a too small loop. What to do in this situation? Try to give the needlewheel the right angle, act carefully so as not to damage the device. You can also upgrade the part by filing a new flat on it. Choose an angle appropriate for your device and perform the necessary procedure.
Why the machine skips stitches
Sometimes the fabric itself is to blame. To rule out the possibility of this, simply put a strip of newspaper under it and check the quality of the stitch.
If the problem disappeared, you can safely continue working “on paper”, good for the density and aesthetics of the seam such a lining does not affect. And then remove the newspaper is not difficult. But if the advice did not help, we will have to take a closer look at the working part of the sewing machine.
Sometimes skipped stitches are caused by the hole in the needle plate being broken. The fabric is pressed into it, brakes the thread and as a result, the needle does not form a loop. Before you go looking for a “deeper” problem, it’s a good idea to eliminate this one.
If it is not the plate, then remove it, arm yourself with a magnifying glass and study the interaction of the needle with the hook. Too much clearance between these elements is the most common cause of skipped stitches. To exclude or confirm the “diagnosis” it is necessary to switch the machine in straight stitch mode and turn it to the position where the hook hook spout is in the same plane as the needle. Next, it is worth inspecting the “working area”, paying attention to the following.
- The tightness of the hook nose to the needle blade. the optimal gap is less than 0.3 mm.
- At what distance above the top edge of the needle eye is the hook nose. should be about 1.5 mm (recommended value for fine fabrics.1 mm, for thick.2 mm).
If the gaps are observed, you should skip the machine at a low speed, looking closely at which side of the needle is formed loop. Occasionally, poor thread quality or excessive thread tension interfere with the normal operation of the sewing machine. In this situation, the loop will form on the opposite side of the hook.
If, however, when assessing the gaps found deviations from the norm, we will have to rule out possible causes step by step.
How to fix
In the vast majority of cases, the culprit of large gaps is the needle.
If the moment the hook takes up the thread, it is more than a third of a millimeter away from the nose, it makes sense to remove it and check for curvature. Make it easy: you should put the needle to the plane of the ruler and assess the degree of curvature. it should not be. If so, the needle is replaced by a new one.
The second most common “breakdown” is the wrong bulb. It can be circular (for industrial sewing machines) or with varying depth of cut (for domestic machines). In addition, this element also varies in diameter. The easiest way to avoid bulb size issues is to bring your old needle with you before you go to the store for new ones.
If the hook hook hook is at a distance of more than 2 mm over the eye at the moment of thread capture, the problem is most often also with the needle, it is either too long or does not “fit” into place due to an incorrect bulb.
In the same case, when the gap has changed while using the correct, defect-free needle, it is best to contact the service center. Attempting to adjust the height of the hook by an inexperienced user can lead to more serious problems.
Of course, this is not all faults, malfunctions sewing machines. The above list of malfunctions is designed to fix them yourself, without going to the master. Breakdowns due to component wear and tear and malfunction of some components can not be eliminated with your own hands, not having special knowledge and experience.
Malfunctions with the sewing machine happens even to those women who carefully monitor it. How to cope with such a trouble? Let’s try to sort out the possible problems.
To prevent malfunctions, the car should be parked in a dry place, away from heaters.
Thread and sewing needles differ in thickness and have their own numbers.
There are rules about what needles and threads to sew on any particular fabric:
– fine fabrics (cambric, chiffon, crepe de Chiffon, etc.). п.) sew with cotton thread 0-80, needle 0; Canvas, calico, fabrics made of chemical fibers and staple. thread.60, needle 0;
Light wool fabrics and heavy fabrics of chemical fibers. with threads.40, needle 00;
Отзыв о китайской швейной машинке. Ремонт китайской швейной машинки.
Heavy wool fabrics. with thread 0, needle 10;
Rough cloth, beaver, burlap sew with thread.10, needle 20.
Sometimes, however, thread can not be selected by the tone of fabric and the right thickness, then there is no needle, which is required. In these cases, you can sew with the most common needles 0 and thread 0.
When you start sewing, thread guide and needle should be up. Put the fabric under the presser foot, put it down, lower the needle, make 2-3 pricks by hand, turning the flywheel towards yourself.
Threading the machine can be made easier. If you need to change the upper thread. do not pull out of the machine, just tear it from the needle and tie a new thread to it.
Then pull the knot through the machine all the way to the needle and there only tear off the rest of the old thread Remain only to thread the needle.
Do not help the machine by pulling away the fabric with your hands. the needle may bend or break, and the stitching will be uneven.
When you have finished, lift the presser foot, pull the fabric to the back and left, cut the threads, leaving 6-7 cm long ends. Place a cloth under the presser foot, lower the needle foot to the bottom position.
Hold the flywheel and release the idle speed screw by turning it towards yourself. Remove the belt if the machine is mechanical and unplug it if it is electric.
singer sewing machine how to solve tread problem In just 5 minutes.
But it happens, the machine stops sewing: thread breaks and loops, the stitch is uneven, the fabric does not advance, etc. It is necessary to find a problem and to eliminate it.