Why is my thread bunching 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.
What setting should my sewing machine be on?
Most sewing is done in the 2.0 to 2.5 range. If you are foundation paper piecing, you may want to decrease your stitch length so that the paper tears away easier. Top stitching and quilting are usually done in the 3.0 to 3.5 range.
What tension should I use for stretchy fabric?
Tension: For loftier knits or stable knits, like ponte or scuba knit fabrics, try a lower tension around 2 or 3. Around 4 is usually good for heavyweight knits. The 4-5 Tension range generally yields the best results with light to medium weight knits.
How do you adjust thread tension?
Changing Bobbin Tension
Turning the screw a tiny bit counterclockwise will loosen the bobbin tension; turning it clockwise will tighten the tension. Some quilters keep two bobbin cases on hand, leaving one as-is from the factory and using the other when they need to make adjustments.
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.
Why does my top stitch look wrong?
Needles, threads, and fabrics: Different thread sizes and types on top and in the bobbin can throw off basic tension settings. A needle that’s too large or small for the thread can also unbalance your stitches, because the size of the hole adds to or reduces the total top tension.
Why is my top thread so tight?
If the bobbin thread was incorrectly threaded, the upper thread may be too tight. … If the upper thread was incorrectly threaded, the upper thread may be too loose. 4. To increase the upper tension – increase the tension setting or turn the knob to the right.