What causes loose stitches?
A loose stitch on the underside of the material is a common problem caused by a lack of precision in the setup of the machine. Different parts move and rotate simultaneously. If they are not timed correctly, one side sews faster than the other.
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.
If your thread is pulled tight on the underside and not forming an even stitch then (counter-intuitively) it’s usually the top thread tension that’s wrong. Sometimes very lightweight fabrics such as sheers can get dragged down into the machine so it’s a good idea to use a straight stitch plate.
Probable Causes: – Top or bobbin thread is not set correctly. – Make sure that the bobbin was threaded properly in the shuttle race. …
How do I know if my bobbin tension is correct?
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.
How do you fix sewing tension?
Changing Bobbin Tension
You should see a small screw on the flat/closed side of the bobbin case. Turning the screw a tiny bit counterclockwise will loosen the bobbin tension; turning it clockwise will tighten the tension.
What is the remedy when the upper thread breaks?
Remedies: Check the threading order and thread correctly. Adjust the tension disc. Replace blunt or bent needles.
What should my stitch length be?
What stitch length should I use?
|What is the best stitch for:||Suggested Stitch Length (mm)||Stitches Per Inch|
|Standard Stitch Length||2.5 – 3.0||8 – 10|
|Basting stitch||5.0 – 7.0||4 – 5|
|Stay-stitching||1.5 – 2.0||12 – 8|
|Top-stitching – light/medium weight||3.0 – 3.5||7 – 8|