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amapola | Posted in General Discussion on

Hello, I have two pairs of slacks that I want to raise the hem. The fabric is a knit. I noticed that now the hem is finished with a serger stitch and then sewn together with double side-by side line of stiches. It looks to me as if they used a twin needle. Can a twin needle be used or is  it two stiched lines. I’ new at all this;so if anyone can help it is really appreciated. Thank you, Amapola




  1. Megh | | #1

    It's likely that the hem was stitched with a serger, which will give that double needle appearance.  You may stitch up the hem with a double needle ifyou have it.  If you haven't got a double needle, stitch two lines with a single needle, being careful to keep your stitching straight. 

    May I suggest that you test your double needle stitching on the scraps you cut off the pant leg?  You'll probably want to adjust the tension of both the top thread and the bobbin thread.  When you use the double needle, there is still only one bobbin thread, which can (if the tension is too tight on the bobbin) draw up the top threads.  Depending on the weight of the fabric and the distance between the needles, you may end up with a ridge between the top threads that you do not like if you don't make tension adjustments.

  2. Kiley | | #2

    It sounds like it was as Meg posted done with a serger that has a coverhem stitch. You could use the double needle on your machine to hem but you could also do a blindstitch.

    1. amapola | | #3

      Hello Kiley, I think I'll do the blindstitch. It sounds easier. Thanks for the help. Amapola

  3. mem | | #4

    Yes twin needle is fine and will actually give the hem some give which is important in a knit fabric.

  4. BettyBernina | | #5

    Hi, I have used a double needle, ideally a 4mm size, on all of the hems I need to shorten for knit clothing. Works very well and looks very professional.

    1. amapola | | #6

      Thank you, I am going to try it. Might as well learn something new. Amapola

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