If a thread is too loose, then it’s not connecting with its partner in the fabric to form the stitch correctly. In the diagram above, the bobbin thread is lying along the fabric instead of being pulled up into it.
Why is my zig zag stitch loose?
The stitch on the left had too much tension, so it pulled the fibers of the fabric together and caused a small lump between zigzag points. … The stitch on the far right has loops where there should be points, which is what happens when the upper threads are too loose.
How do you adjust the tension on a zig zag stitch?
Zig zag stitch can be adjusted by changing the settings on the machine. A higher number on your stitch length makes the zig-zag longer and the width dial will indicate the width of the stitch and change it to wider or narrower.
Why is my stitch loose?
Another reason you may experience loose stitches is that the thread tension may be low and may not be tight enough to hold these threads tighter to the fabric. When you experience loose thread, you should readjust your tension to see if it is close enough to stop the loose stitches.
Is a zigzag stitch stronger than a straight stitch?
Though straight stitch is considered as the strongest stitch, zigzag is one of the most durable stitches. There are ways in which you can make the hold stronger. For instance, the triple zigzag is stronger compared to the ordinary zigzag ones.
What should the tension be for zig-zag stitch?
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.
Does a zig-zag stitch stretch?
A zigzag stitch is a great way to seam knit fabrics. Its inherent stretch allows for the fabric to stretch and move without fear of popping a seam. On light to medium weight knits, try using a stitch length of 1.5 and a width of 5.
Why does my sewing machine have loose stitches?
The machine is not correctly threaded
If the machine is threaded wrong, not only does it make the thread breaks easier, but is also more likely to create loose stitches. Check the threading to see if the thread has passed through the entire thread guides, the take-up lever and the eye of the needle.
Why is my bottom stitch not straight?
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.
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.