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Thread: Thread weights - am I just dense?

  1. #1
    Senior Member
    Join Date
    Jan 2011
    Richmond, VA

    Thread weights - am I just dense?

    I am trying to learn about proper thread weight for the application, but I do not see where the brands advertise this. If 40 is regular, inexpensive thread, and 50 is finer, how do I know what I am buying when it doesn't say? And does not show on the spool end of any I have?

  2. #2
    Power Poster Jingle's Avatar
    Join Date
    Dec 2009
    Outside St. Louis
    Can't help, looked all over for weight and couldn't find it. I don't know when they stopped putting that on the spool ends.
    Another Phyllis
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  3. #3
    Super Member coopah's Avatar
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    Dec 2011
    Horse Country, FL
    Blog Entries
    Some brands seem to have the weight listed at the end of the spool and others don't have it anywhere. From what I see on my spools.
    "A woman is like a tea bag-you can't tell how strong she is until you put her in hot water." Eleanor Roosevelt

  4. #4
    Super Member
    Join Date
    May 2017
    Sunny Florida
    A few good articles here with information that might help.


    What brand is the thread? Check the vendor web site for your threads. There may be info there too.

    I don't agree about the correlation about weight and expense though. I use EMB poly thread (40 wt) all the time for piecing, bobbins and/or quilting.

  5. #5
    Community Manager PatriceJ's Avatar
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    Nov 2006
    Blog Entries
    when it comes to cotton thread i have yet to find 60 wt to be consistently more expensive than 50wt.

    what seems really odd to me is that 40wt poly embroidery thread seems so much thinner than either 50wt or 60wt cotton thread. it must be my imagination, but it sure looks and feels that way. go figure.
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  6. #6
    Super Member
    Join Date
    Jan 2012
    Quote Originally Posted by coopah View Post
    Some brands seem to have the weight listed at the end of the spool and others don't have it anywhere. From what I see on my spools.
    Exactly my observations. Very frustrating sometimes! I recently bought thread just on my guess. I knew it was thinner than 40, but still don't know if it's 50 or 60 weight. I was wanting a 50 wt.

  7. #7
    Power Poster feline fanatic's Avatar
    Join Date
    May 2009
    Here is an excellent article from Superior threads about thread weights. I wish he got a little more into the plies as that can also impact the appearance of the thread. Very good point in the article in the composition section about comparing a 50 wt cotton to a 50wt poly is like comparing apples and oranges.


  8. #8
    Super Member SusieQOH's Avatar
    Join Date
    Jul 2017
    Central Ohio
    No, you're not dense. The only way I usually know is when I purchase thread and it says what weight it is. Hard to tell from the spool.

  9. #9
    Junior Member
    Join Date
    Jan 2018
    That's one of the reasons I like Aurifil. The colors of the spools tell you the weight.

  10. #10
    Super Member
    Join Date
    Jul 2008
    Keller, TX
    quality of the thread is not determined by the price or weight. Quality is determined primarily by strength and durability. You can get different weights of thread in different types whether poly, cotton, or rayon. Bob from Superior is the best to learn from.

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