Common Thread Tension Issues in Embroidery Machines

Embroidery brings your creative vision to life. But when the process shows thread bunching, looping or breaking, it feels frustrating. Especially when you have already changed the needle, checked the bobbin and re-threaded the machine, multiple times. It happens mostly when the thread tension is not set properly. Hence, such issues ruin your designs and spoil your mood. However, there are solutions to these problems. Thread tension can seem intimidating at first, besides it is actually one of the easiest things to master once you learn how to proceed. Here in this blog, we will discuss the common thread tension issues in embroidery machines and their solutions. Moreover, these steps guide you to learn how tension works and when you need adjustments for a neat, smooth and professional embroidery.

How Thread Tension Matters?

Thread tension is the balance between the top thread from the spool and the bottom thread from the bobbin. When the both ends pull the same volume, they connect properly in the middle of the fabric. Hence, the stitches appear neat and even on both the sides. However, if the balance between the two is not right, your entire design looks poor. Sometimes machines operate faster and use more thread types, therefore such issues show up more. Inappropriate tension results in thread breaks, leading to money and time waste. In addition, it makes fabric pucker running the entire embroidery project. Suitable tension reduces waste by up to 30%, making your designs look neat and professional. So, it is good to consider common thread tension issues in embroidery machines before starting your work. It will save you a lot of money and working hours.

Issue No. 1: Tension In The Upper Thread Is Too Tight

While sewing a test sample, you may find small and tight knots everywhere. It means the upper end of thread is pulling too hard. Thus, dragging the bobbin thread up to the bottom side. Additionally, it leads to thread breaks and tears within delicate areas. This issue usually comes from dust particles in the tension discs. Moreover, it may also happen when you turn the dial too high without a test.

Quick Fix

Switch off the machine and raise the presser foot first. This will allow you to rethread easily. Then pull the upper thread out entirely. Put it back through every disc. Make sure it sits flat. Then turn down the tension dial by one number, like from 4 to 3. Stich a plain square on scrap fabric and check the back. If you still find the knots there, turn it down half a number more. The focus is to get even stitches having no more than one third of bobbin thread visible on the bottom side. Brush the discs to clean. However, if it does not work, change the needle size and you will eventually get smooth stitches.

Issue No. 2: Tension In The Upper Thread Is Too Loose

Here you find the bottom has big loops of the upper thread. Therefore, the design appears complex and messy. It turns the fabric out of shape. Such issue usually occurs after you change the thread or the spool cap is loose.

Quick Fix

Rethread the top by lifting the presser foot. Make sure that the spool stays straight. Turn up the tension dial by one number, like from 3 to 4. Stitch a test square on fabric and see at the bottom. If you find more loops, turn it up a bit more. On the other side, if the fabric puckers, turn the dial back down. Hence, both threads should meet in the middle with balance in tension. In addition, do not overfill the bobbin, 80% to 90% is best. Stitch at 600 stitches per minute. In this way, the loops will stop arising.

Issue No. 3: Uneven Tension Between Upper And Bobbin Thread

Tension issues arise when one thread pulls harder than the other. Hence, stitches look uneven. These are thick in some spots and thin in others. Such problem appears due to a dirty bobbin case or different thread weights. It is one of the most common thread tension issues in embroidery machines.

Quick Fix

Clean the bobbin case first. Take it out and wipe it with a clean and dry cloth. Keep a new bobbin at an even speed. Use a 40-weight thread on top and bottom to meet your task. Stitch a zigzag line pattern as a test run. Then flip the fabric. If you find the top thread covering more than two/thirds of the back, loosen the top dial a little. Moreover, if the bobbin thread performs most of the work, turn the bobbin screw a little clockwise. Then test again until you get uniform balance.

Issue No. 4: Frequent Thread Break

Thread break usually happens on long runs. It occurs right in the middle of a big design. The machine keeps stopping again and again. Hence, you waste time and thread. Most of the times, the upper thread tension is too tight. Additionally, it results from an old needle having a rough spot that cuts the thread. Moreover, if thread is old, it gets dry and weak upon working. The spool spins wrong and twists the thread. All these things sum up to break the thread over and over again.

Quick Fix

Follow the machine instruction to feel along the top thread path for snags. Set upper tension to 3-4. Change to a new 80/12 needle. Use fresh polyester thread and wind bobbins slowly. Oil every 10 hours.

Issue No. 5: Fabric Puckering After Stitching

It appears when you take the hoop off. The cloth looks like an old shirt with wrinkles. It turns the design look messy. Delicate fabrics like silk and knit tops show this issue to the worst. This problem ruins your design and waste time and effort. It arises when upper tension pulls too hard. Moreover, it occurs when you forgot the stabilizer under the fabric. Too much tight or loose hoop may also be the reason. Fast speed pushes the fabric around and when you wash it later, the fabric shrinks differently from the stitches. Thus, shows bunching in design.

Quick Fix

Turn upper tension down to 2.5 or 3.5 for stretchy fabric. Make sure to put cut-away stabilizer under the fabric before hooping. Spray a little glue on the stabilizer to make the fabric stays flat. Hoop the fabric properly. It should be smooth and tight but do not pull it too hard. Set the machine’s speed to 400 stitches per minute. Bring a test run on the same fabric. Then take it out and press with iron, without steam. If the fabric is still wavy, it means you need to add one more layer of stabilizer. Use tear-away on top for thick designs. When you finish, iron it again from the back. It should stay smooth and flat every time.

Conclusion

In order to master the art of embroidery, it is important to refine your stitching techniques. By understanding the root causes of common thread tension issues in embroidery machines and their suggested solutions can make a big difference. Through this blog, you can learn the common thread tension issues in embroidery machines and their quick fixes to achieve professional-looking results. Always remember that quality embroidery thread, regular maintenance of your machine and attention to thread tension play key roles in ensuring successful embroidery outcomes. So, to attain neat, clean and precise embroidery work; follow Digitizing. Our exceptional grade services make you ditch any problems regarding embroidery.