What is a bobbin
A sewing machine bobbin is a miniature bobbin on which thread is wound to create a lower stitch. Accordingly, the thread used in it is called the lower. The winding process is carried out automatically by the machine itself. To do this, simply secure the bobbin on top of the sewing machine. Then the bobbin is inserted into a special compartment. the bobbin case, which is put on the shuttle of horizontal or vertical type.
Bobbins were used even on the old machines “Podolsk” from the factory Kalinin
The bobbin and bobbin case are some of the main parts of the sewing machine. They must always be in perfect working order. The surface of the cap should be smooth, because even a small imperfection can distort the stitching and lead to incorrect operation: from skipped stitches to breakage of the lower thread.
How to Wind the Bobbin on the Stirling by Janome Sewing Machine (Janome JR1012)
Important! When sewing, the upper thread pulls on the lower thread in the bobbin case. After they are intertwined and a stitch is formed. Thread tension depends on the weight of the bobbin, as well as the material of manufacture. Plastic will move faster than metal.
It is worth saying that the sewing bobbins, as well as bobbin caps, differ significantly from each other. Almost every machine only fits bobbins and caps that are made by the machine manufacturer. Different bobbins not only in their radius and width, but also in the material of manufacture. Usually make metal and transparent plastic parts.
You will be interested in Patterns and order of sewing clothes for dolls by yourself
Before working, the sewing machine must be charged
Such elements are designed for several types of shuttles: vertical rocking and vertical double whip. Naturally, a bobbin made of metal is heavier than one made of plastic, but at the same time it will have increased strength and durability.
For your information! Metal parts of this type are considered the most reliable. They are common not only in domestic sewing machines, but also in production units of the “economy” or “premium” class.
The metal part is characterized by reliability
Plastic bobbin most often used by Japanese sewing machines with a horizontal hook. Usually machines with a horizontally oriented hook have transparent needle plates, through which you can see the thread. The bobbin in such devices is also made of plastic and transparent. The advantage of such a part is its weight, and the disadvantage is its durability.
Through the plastic, you can always see how much thread is left before you have to thread
How to improve the sliding of the bobbin inside the cap
If you have an old machine or sewing machine has stood unused for years in the closet, the inside (bottom and walls) of the bobbin case will be covered with rust or oxidized. As a result, the machine will constantly tear the thread, sew with skips, etc.д. To correct this defect, you can cut from a plastic folder and lay it on the bottom of the bobbin case.
Use a pencil to trace the outline of the bobbin and cut the outer outline of the grommet with scissors.
The inner hole of the grommet is cut with miniature manicure scissors.
By the way, instead of plastic gasket can be cut from tissue paper, tracing paper, etc.п. To improve the sliding of the bobbin, it is recommended that the paper pad be oiled.
The gasket should rest loosely, without effort, on the bottom of the bobbin case.
Sewing machine is jamming the threads at the bottom
Many seamstresses do not consider it a breakdown if the sewing machine jams the lower thread. If it happens once and is easily corrected by adjusting the tension, there really is no problem. But if the jamming is repeated, it is difficult to continue sewing. Loops are pulled out and tangled on the wrong side of the garment. They can even get a needle stuck in them. Stitching is ugly and fragile.
What to do if your Pfaff, Bernina or Janome machine is broken? First you can refill the top bobbin and adjust its tension. If these actions do not bring results, you should contact the specialists. Service technicians repair sewing machines at home. We have extensive experience in servicing domestic and imported domestic and industrial models of machines. You can place an order for a master visit by phone from 7:00 to 23:00 daily.
Why is the seam tangled at the bottom
It does not matter whether you use a simple model of sewing machines Veritas or Aurora, or sew on advanced machines Brother or Juki or any other brand, the threads at the bottom of the product loops for the same reason:
- Improperly threaded upper thread. This is the most common variant of jamming and breakage. Before you call a master, you need to make sure that it is set correctly.
- Improperly selected or blunted needle. If you are working with thin fabric and have selected a thick or dull needle, the stitching can get caught on the wrong side of the fabric.
- Low tension at the top. On the wrong side of the fabric to be sewn, long loops will be pulled out and tangled. To adjust the tension, you need to turn the knob on the machine.
- Fibers and other debris are wrapped between the plates of the upper thread tensioner. It must be removed without damaging parts.
- Toothed rack defects. If the teeth of the bobbin are dull or the feed dog itself is faulty, the fabric will not be fed evenly. The fabric will jam and the threads will get tangled underneath.
- Excessive tension at the bottom. To loosen it, loosen the screw on the bobbin case.
- The bobbin is incorrectly installed. Insert the bobbin until it clicks into place. If it is not installed until the end, the seam will loop, the upper thread will start to twist on the axle and spoil it, and the lower one will be tightened in the mechanism.
- Incorrect thread selection. You need to choose spools where the fibers are twisted in one direction and with the same thickness. If you use differently twisted, the likelihood of crooked stitching and other errors increases. For Husqvarna, Podolsk, Jaguar machines more often the fibers are twisted to the left.
- Faulty shuttle. Failures of this part can only be eliminated by a professional craftsman.
How to eliminate the jammed lower thread by yourself
If the sewing machine jammed threads from the bottom, you can first try to correct with your own hands all elements of the product: the position of the fabric, the direction of both threads, perhaps replace the needle with a new, suitable.
Check first if the machine is correctly threaded at the top and bottom. This is especially true for beginner needlewomen. Tuck the thread for the seam should be in accordance with the instructions. Also check that there are no foreign objects between the tension plates.
After that, pay attention: whether the needle matches the selected material and stitch. It should be sharp and flat.
Check that the bobbin is correctly installed and the bobbin tension is correct. Here it should be noted that the pull on the bobbin case must be adjusted carefully, t. к. the screw used for adjustment is short. If it is unscrewed too far, it can fall out of the groove and get lost in the system. This will lead to the replacement of the hook, and in the worst case, a serious damage to the whole machine.
If the above manipulation did not help, there was damage to the internal elements of the machine. You will need to turn to a professional.
If you have refilled the bobbin top and bobbin in the hook, corrected the tension on the machine Merrylock, Singer, Astralux or Chaika, but it still chews the seam, all further action should be performed by a specialist. Modern machinery has a complex device and without the right knowledge and professional tools to cope with the damage will be difficult.
Masters have been repairing sewing machines for over 10 years.
We will come to your home at a convenient time for the customer, even if it’s a weekend or a holiday.
Professional skills allow us to solve any problem in one visit.
Should a faulty part need to be replaced, we will find it in our own spare parts warehouse without long waiting time or overpayment.
We warranty all services and parts from 3 months to 2 years and also offer favorable terms for other services of our service.
Lower thread adjustment
To prevent the lower thread from becoming tangled, forming a bundle, and not to slip through the top, not to form layered knots of stitches, follow a number of steps.
- Make sure the upper and lower threads are threaded correctly. If you notice any mistakes or when you don’t have time to figure out what’s missing. pull out the upper thread and thread it again, carefully following the sequence of threading. The sequence of upper threading is usually as follows: upper thread guide. first part of the channel to the tensioner. tensioner itself. second part of the channel to the second thread guide. thread turn on it. third part of the channel (if any). release loop on the needle bar. needle eye. slot in the foot. Then turn the thread to the side. Adjust the tensioner to the desired value using the dial on which the circular digital scale is marked.
It is useful to use the previous marks. which thread and which fabric, which needle corresponds to the value on the tensioner regulator.
- For the lower thread, pull out the cap with the bobbin by lifting the hook plate of the hook compartment itself. Check that the thread on the bobbin is wound evenly and neatly, that the thread itself does not end (the bobbin would be almost empty). Reinsert the bobbin into the cap and turn the tensioner screw with a screwdriver. the thread should wind up with moderate force. Make sure you’re using a smooth, stretchy thread. coarser thread, like cotton, would leave “frizz” in the tensioner and clog it over time. Insert and secure the bobbin cap. you’ll hear a click when it locks. Make sure the bobbin is securely seated, and that it doesn’t wiggle around.
Pass the end of the thread through the gap in the needle plate, take the end out 10-15 cm, bend it behind the slot in the foot and take it aside with the end of the upper thread. Now try stitching a tentative stitch on the test piece. Its quality (no tangled or jammed threads, no skipped stitches) will be immediately noticeable.
If all else fails, change the tension of the upper and lower threads until you get the best result.
To master the basics of sewing and make friends with the sewing machine does not need to buy expensive equipment with electronic control. Computer typewriters have many functions and are designed for those who have already mastered sewing. Better to start with the electromechanical versions. Their functionality includes a sufficient number of operations for virtuoso sewing, and to understand the management of such units is much easier. A good choice would be Janome E-Line 15, Janome Juno 523 or Janome 18e.
Tip: If you have already purchased a machine, read the manual first. You can find extensive information about the machine in this book. Learn to sew on cheap, simple fabric or unnecessary scraps of fabric you have at home. Following the manual, practice making a few types of stitches and sew a straight stitch, experiment with settings, replace the needle.
What is a bobbin
A bobbin for a sewing machine is a miniature bobbin on which thread is wound to create bottom stitching. Accordingly, the thread used in it, called the bottom. The winding process is done automatically by the machine itself. To do this you just need to fix the bobbin on top of the sewing machine. Then the bobbin is inserted into a special compartment. the bobbin case, which is put on the hook of horizontal or vertical type.
Bobbin and bobbin case are some of the main parts of a sewing machine. They must always be in good condition. The surface of the cap should be smooth, because even a small imperfection can distort the stitching and lead to incorrect operation: from skipped stitches to breakage of the lower thread.
Important! While sewing, the upper thread pulls on the lower thread, which is in the bobbin case. After they are intertwined and a stitch is formed. Thread tension depends on the weight of the bobbin, as well as the material. Plastic will move faster than metal.
It is worth saying that sewing bobbins, as well as bobbin caps, differ significantly from each other. Virtually every machine only fits bobbins and caps made by the machine manufacturer. The bobbins differ not only in their radius and width, but also in the material used. Usually make metal and transparent plastic parts.
Such elements are designed for several types of shuttles: vertical swinging and vertical double whip. Naturally the metal bobbin is heavier than the plastic one, but at the same time it will be more durable and wear resistant.
For your information! Metal parts of this type are considered the most reliable. They are common not only in domestic sewing machines, but also in production units of “economy” or “premium” class.
Plastic bobbin is most often used by Japanese sewing machines with a horizontal hook. Typically, machines with a horizontally oriented shuttle have transparent needle plates through which you can see the thread. The bobbin in such devices is also made plastic and transparent. The advantage of such a part is its weight, and the disadvantage is its durability.
Quite often the mounting of the device gets loose, the rubber rim wears out and sometimes the spring breaks or just its edge pops out of the mount as a hole in the housing. But in any case, you need to check and tighten the screw with a boil off. Next inspect the spring, if it has popped out, insert it as shown in this photo.
Now the most complicated case is when the rubber rim is so worn out that when you turn on the coiler, it just does not press against the wall of the flywheel. What to do? There is no place to buy it, and you don’t want to wind the thread by hand or by putting the bobbin on the awl. Remove the rubber rim and wrap some thread around the groove where it will stand. It will surely increase its size, and it will be in contact with the flywheel surface, but how long will it last?? But most often the surface of the rubber rim and flywheel surface gets greasy and the bobbin slips. Clean both with a cotton swab moistened with cologne or any degreasing liquid, but not with degreaser.
Household sewing machine bobbin
Every sewing machine has a bobbin, except for chain-stitch sewing machines. For winding the bobbin at each machine has a special device. Sewing machines with a horizontal hook bobbin is inserted into the bobbin case. For machines with a vertical hook, the bobbin is inserted from the top, directly into the hook stroke. The bobbin thread is threaded under the spring plate of the hook or bobbin case anyway.
Sewing machine bobbin. is actually a small metal or plastic bobbin with thread wound on it. But, since, as often (erroneously) called the bobbin bobbin, then this article will talk about it, too. Such a small and simple detail as a bobbin, it turns out, also has its “nuances” and can affect the quality of stitching machine. For example, if the thread was wound on it by hand, the stitch will have uneven tension, etc.д.
How to correctly wind the thread onto the bobbin, thread and insert the bobbin into the hook. What to buy bobbins when replacing the bobbin for your machine and much more we will try to explain in this article.
How to tuck a thread into a sewing machine
If you get the hang of needle changing, you’ll undoubtedly be just as good at learning how to insert the thread into the sewing machine. The first thing to check is the bobbin. If it does not need winding, return it to its place and, with the spool on the spool pin, proceed to threading.
- Turn the flywheel toward you to raise the upper directional lever and the needle.
- Raise the presser foot.
- Pass the thread from the spool through the upper thread guide, pass it through the tensioner (if it has one); then through the thread guide lever, lower it to the two lower thread guides.
- After passing the thread through the thread guide, insert the thread into the eye of the needle away from you and pull the thread through the foot at the bottom.
- Using the needle threader and gradually turning the flywheel towards yourself, pull out the lower thread by about 10 centimeters. The needle thread, when lowered into the hole in the needle plate, will catch the thread from the bobbin itself, and you only need to slightly pull the needle thread. That’s it!