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Video: Guide to sewing with woolly nylon

Curious about woolly nylon, a.k.a. textured stretch thread? In this video, I talk about this thread that is becoming increasingly popular among us home sewists. It’s traditionally used as a looper thread in the garment industry, especially when sewing activewear, swimwear and underwear on sergers and coverstitch machines.

The beauty of the woolly nylon is that it spreads out and gives fantastic coverage, which is especially nice when sewing flatlock and mock flatlock seams. You can also use this thread in the bobbin on a regular sewing machine, but you won’t get the same coverage effect since the thread won’t run through loopers at high speed.

Topics covered in this video

  • When and how to use woolly nylon
  • Different brands, including my faves
  • Using woolly nylon in a serger, coverstitch machine and a sewing machine
  • Best settings when sewing with woolly nylon
  • Pros and cons with woolly nylon
  • Plus a lot more!


  • Angela
    February 12, 2019 at 3:54 am

    Excellent discussion, I enjoy your videos 🙂

  • Ben L Lofgren
    May 26, 2019 at 8:22 pm

    Where are the links for the wooly nylon/polyester threads you refer to in your video?

  • Mari Anne
    May 4, 2021 at 6:32 pm

    Was trying to figure out how to do a rolled hem, where to put the woolly nylon. I used in the top looper only and achieved a beautiful rolled edge finish. Thank you for the information on how to use this thread.


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