how to fix sewing machine thread bunching up

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How to Fix Sewing Machine Thread Bunching Up Step by Step Instructions

If you operate a sewing machine, you know how aggravating it is when your thread bunching up in the fabric during the stitching process. Sewing machine thread bunching up may be fixed using any of these four methods.

It’s aggravating, and it’s a visual nuisance

For heavier materials or complex tasks, this is even more important. What causes sewing machine thread to bunch up? And how can you repair it? That’s what we’ll cover in this blog article!

Once thread bunching has started, it might be difficult to correct. We’ll look at some of the elements that contribute to thread clumping in order to get to the bottom of the issue and implement a solution.

The term “birdnesting” describes the appearance of threads bunched up beneath the cloth when they are not traveling through any stitching, such as in a row of topstitching or any other straight seam.

As you may have guessed, it’s not a pleasant sight. We’ll go through a few reasons why your thread could get clogged, and we’ll go over how to prevent and resolve it one-by-one.

What causes threads to get clumped together?

As a starting point, below are some probable causes and fixes for the problem:

sewing thread problems

Stitching With Too Much Tension On The Machine

Too much sewing machine tension is a common cause of thread bunching. In many cases, the source of the issue is tension. The thread won’t be able to wrap around the bobbin casing correctly if you put too much tension on it.

If the needle plate and bobbin case don’t have enough room, or if your needle is too tight, this may also happen. So, if you’re experiencing thread bunching or uneven stitching, the first place to look is at your thread tension.

Even and sturdy stitches are ensured by tension, which is one of the most critical parts of sewing. It is in charge of ensuring that the top and bottom stitches are uniform. Sewing machine thread bunching is caused in part, as previously stated, by this phenomenon.

It’s possible to correct this by changing the needle and bobbin tensions on your sewing machine so that there is equal tension on both threads.

A maximum of one or two lines should be on either side of your sewing machine. Making it a practice to check your tension settings before starting a job to ensure they are suitable for the task at hand. Each fabric type has its own unique set of requirements for the proper tension setting.

You’re looking for straight stitches without any bunches! If this isn’t the case, then tighten up the tensions as previously indicated. Alternatively, if your threads tend to bunch up while you stitch, you may want to reduce the speed at which your handwheel rotates to see if that alleviates the issue.

Your sewing needle has too much grease on it

The second reason is stitching with an oily needle (or not replacing the needle when needed). If there is not enough room between the cloth and the bottom section of the needle plate, oil might become caught between the stitches. You have many options for dealing with this issue.

  • There should be more space between the tension dials.
  • When necessary, replace or change the needle. Make sure there’s enough room between the cloth and the bottom section of the needle plate so that you don’t acquire too much oil on your needles.
  • Also, check the needle on your sewing machine. If this is the case, it’s time to stop stitching and start again.

Unhappy Feeding Dog

Thread bunching may also be caused by an issue with the feed dog. If you’re having troubles with your sewing machine feed dogs, it’s typically preferable to remove and clean them or replace them completely. It’s a one-stop shop for needle clogging and thread bunching!

Jamming of threads

  • In addition to causing thread knots, tangles may be caused by thread jamming.
  • According to Brother, thread jamming may occur if the needle size, thread size, and fabric are all incorrectly combined.
  • Using the correct needle and thread for the cloth you’re working on may easily prevent this.
  • You must first remove the needle from your sewing machine in order to mend a stuck thread.
  • Thread a fresh length of thread and knot it to the end of your sewing machine’s jammed old thread, then continue sewing. Pull the new thread carefully to free any material or threads that have been stuck in your sewing machine. These threads may need you to remove the bobbin, throat plate and presser foot from your sewing machine in order to mend them.
  • After that, just put the needle back in the exact spot and stitch away as normal. If the needle is crooked, it will cause the thread to bunch up as well, so be sure it is straight.
  • Otherwise, check for any other sections of the garment that may have loose seams, such as zippers or button holes, that might be causing the bunching. Those bunches may be caused by this!
  • It may be time for a thorough cleaning of your sewing machine if no problems are identified.

The following are items to look out for if your machine thread bunches up:

why bobbin thread bunches up
  • Verify that the sewing machine’s tension settings are appropriate for the cloth you’re working with.
  • The bobbin case tension should be just right, and not too loose or tight.
  • Keep an eye out for bent needles or broken needles on your sewing machine.
  • Thread the needle carefully before sewing.
  • Inspect your sewing machine to determine whether it needs any cleaning or repair.
  • The needle on your sewing machine may need to be lubricated
  • You may need to clean or replace feed dogs if they’re to blame for the issue
  • Select the correct needle, thread, and fabric size combination.
  • Verify that the bobbin is properly threaded before starting.
  • Make sure the needle and bobbin are properly threaded before beginning.
  • If you’re starting a new project or haven’t threaded your sewing machine in a while, make sure to do so.
  • In addition to unwinding any surplus spool from around the tension release lever, wrap the spool back under itself in front of them as they approach the presser foot.
  • Eyelet holes on the same side of the cloth should have both the top and bottom threads threaded through a needle until they emerge side by side (along with other necessary tools).


We hope that the above tips will help you to get rid of the problem of sewing machine thread bunching up.

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