Spandex is widely used for sportswear, swimwear, yoga wear, leggings, and dancewear because of its excellent stretch. But if you've ever tried sewing it, you've probably run into problems like skipped stitches, wavy seams, or fabric that won't feed smoothly.
The good news is that sewing spandex isn't difficult once your machine is set up correctly.
1.Use the Right Needle
A stretch needle or ballpoint needle (75/11 or 80/12) is the best choice. These needles slide between the fabric fibers instead of piercing them, helping prevent skipped stitches and fabric damage.
2. Choose Polyester Thread
Polyester thread is stronger and more flexible than cotton thread, making it a better match for stretch fabrics. It also holds up better after repeated stretching and washing.
3. Select a Stretch-Friendly Stitch
A narrow zigzag stitch works well on most home sewing machines because it allows the seam to stretch with the fabric. If your machine has a stretch stitch, that's another good option.
4. Don't Pull the Fabric
One of the most common mistakes is stretching the fabric while sewing. Let the feed dogs move the fabric naturally. Pulling it by hand usually creates wavy seams.
5.Test the Tension First
Before sewing your project, stitch on a small fabric sample. If the seam puckers or the thread feels too tight, adjust the upper thread tension until the stitches look smooth.
Common Problems
- Skipped stitches: Replace the needle with a new stretch needle.
- Wavy seams: Reduce presser foot pressure if possible and avoid pulling the fabric.
- Broken thread: Use quality polyester thread and check the thread tension.
- Uneven stitches: Change the needle and test your settings again.
Start with Good Fabric
Even perfect machine settings can't make up for poor-quality fabric. Spandex with stable stretch and good recovery is easier to sew and produces cleaner seams. Warp knit spandex is a popular choice for activewear, swimwear, cycling wear, and other performance garments because it feeds smoothly and keeps its shape.
Final Thoughts
Learning how to sew spandex on a sewing machine is mostly about using the right needle, thread, and stitch settings. Take a few minutes to test your setup before starting, and you'll get much better results.
At Lilong Spandex, we supply high-quality warp knit spandex fabrics for sportswear, swimwear, yoga wear, dancewear, and other stretch apparel. Consistent fabric quality helps manufacturers improve sewing efficiency and produce garments that last.