What is the difference between lockstitch sewing machine and hi speed lockstitch sewing machine?
Why is my serger bunching up?
If the upper looper thread loops are visible on the wrong side, they’re either too loose or the lower looper thread is pulling them too tight. So you can either turn the lower looper tension dial down or turn the upper looper tension dial up.
Why is my fabric scrunching when I sew?
Tension pucker is caused while sewing with too much tension, thereby causing a stretch in the thread. After sewing, the thread relaxes. As it attempts to recover its original length, it gathers up the seam, causing the pucker, which cannot be immediately seen; and may be noticeable at a later stage.
What is differential feed on Overlocker?
This serger is equipped with two sets of feed dogs under the presser foot to move the fabric through the machine. The differential feed controls the movement of both the front and the rear feed dogs. This function assists in removing the rippling when serging stretch fabrics. …
What is the defects on fabric puckering?
Puckering is an irregular seam surface. You’ll see this garment defect more commonly in woven fabrics and knitted ones. Puckering is especially prominent on garments that are tightly woven.
What causes puckering?
Puckering is usually caused by one or more of the following conditions: Yarn Displacement (structural jamming of fabric yarns). Tension Puckering (excessive thread tension and recovery). Machine Puckering (uneven ply feeding).
What is the tension setting on cotton?
Cotton requires a moderate tension setting, usually between three and four.
What thread tension should I use?
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.
What is it called when fabric bunches up?
Often called “birdnesting”, this is what it looks like when sewing machine thread bunches up on the top of or on the underside of your fabric.
Why is my fabric not moving when I sew?
Your Stitch Length Is Set to Zero
If the stitch length on your sewing machine is set to zero, it won’t move your fabric forward or backward. This might be your problem if you recently created a buttonhole. Most sewing machines require you to set your stitch length to zero for the automatic buttonhole stitch.