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?
When lower tension is too loose (or upper tension is too tight), knot is visible on right side (left). When upper tension is too loose (or lower tension is too tight), knot is visible on wrong side (right). Tensions can still need adjustment even if they’re balanced.
What thread tension should I use for cotton?
Cotton requires a moderate tension setting, usually between three and four.
How does tension affect sewing?
The tension that controls the thread coming through the needle is too strong, pulling the bobbin thread to the top. The tension that controls the thread coming out of the bobbin is too weak, allowing the needle thread’s tension to take over.
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.
How do you adjust bobbin tension?
To tighten your bobbin tension, turn the tiny screw on the bobbin case a smidgen clockwise. To loosen bobbin tension, turn the screw counterclockwise. A quarter turn or less is a good place to start.
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.
What tension should I use for thin fabric?
The standard tension setting on most sewing machines is 5, which is ideal for the majority of fabrics, you will need to set it tighter for lightweight fabrics such as silk and chiffon and looser for heavier fabrics such as denim or canvas.
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.