When the bobbin thread shows on the right side, the needle tension is too tight or the bobbin thread, too loose, as shown at left in the illustration below. When the needle thread shows on the wrong side, the needle tension is too loose or the bobbin thread, too tight, as shown at right in the illustration below.
What causes sewing machine tension problems?
When sewing fabrics together problems can occur when the thread tension is not correct, the needle or bobbin is not inserted properly, or the machine is not threaded correctly. … Always place two layers of fabric together when producing a sewing sample to check thread tension, needle type and stitch length.
What should tension be set on sewing machine?
The dial settings run from 0 to 9, so 4.5 is generally the ‘default’ position for normal straight-stitch sewing. This should be suitable for most fabrics. If you are doing a zig-zag stitch, or another stitch that has width, then you may find that the bobbin thread is pulled through to the top.
When should I adjust the tension on my sewing machine?
Don’t hesitate to make tension adjustments because they’re often necessary.
- Sewing Machine Tension.
- Balanced Machine Stitches.
- If Bobbin Thread Is Visible on Top of the Piece Being Sewn.
- If Needle Thread Is Visible on the Bottom Side of the Piece Being Sewn.
Why is my thread bunching up underneath?
A: Looping on the underside, or back of the fabric, means the top tension is too loose compared to the bobbin tension, so the bobbin thread is pulling too much top thread underneath. By tightening the top tension, the loops will stop, but the added tension may cause breakage, especially with sensitive threads.
How do you tell if your bobbin tension is off?
The thread should unwind just slightly and the bobbin case should drop an inch or two. If the thread unwinds without resistance and the case slips to the floor, your bobbin tension is too loose. If the bobbin case doesn’t budge, your bobbin tension is too tight.
What tension should I use for thin cotton?
Use size 70/10 for really thin cotton like voile, size 80/12 for light to medium weight cotton, and 90/14 for thick cotton like denim.
What tension should I use for stretchy fabric?
For a stretchy fabric, it would be best if you set the upper tension level between 3-4. This adjustment is also a neutral level of tension setting. Step 5: Now, after you have attached the correct needle, stitch type, and tension setting, it is time to test the final stitch on your fabric.
How do you adjust thick fabric tension?
The thicker the fabric, higher the tension must be to lift the lower thread up to the middle of the layers of fabric. You will usually be alright with a 4 or 5 on medium to medium-heavy fabrics like linen and twill weaves such as drill and denim.