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What to know about using prewound bobbins with lightweight thread


Do you remember the myth that your bobbin thread has to match the thread on the spool? Well, I’m here this week to bust that myth! Go wild!

This week I get to blog about using WonderFil DecoBob Prewound Bobbins.


WonderFil DecoBob Prewound Bobbins
WonderFil DecoBob Prewound Bobbins


There are just way too many reasons to list here, but I like DecoBob Prewound Bobbins because the thread has the following characteristics:

  • is a nice light 80wt thread
  • is available in 36 beautiful colors
  • is a 2-ply polyester bobbin thread
  • is available in 3 bobbin sizes – for domestic machines, class 15 and L, and for longarm machines, class M. Refer to the Bobbin Guide to see which bobbin size is best for your machine.
  • has 110 yards on class L and M bobbins, and 135 yards on class 15 bobbins
  • doesn’t leave lint in your machine
  • has a matte finish to blend with most fabrics
  • is in a reusable bobbin which means it’s good for the environment!


DecoBob packs of 12 bobbins
DecoBob packs of 12 bobbins


When I wind my own bobbins, I notice that they’re never evenly filled. This means that my bobbins are either under or overfilled. The thread on DecoBob Prewound Bobbins is evenly wound to ensure consistent stitches for your quilt blocks or any other sewing project you’re working on.


Evenly wound DecoBob Prewound Bobbins
Evenly wound DecoBob Prewound Bobbins


As I was researching for this blog by asking others about their bobbins, one comment I got was that certain machines need metal bobbins. That is a myth! I’ve had a few machines over the years and some are indeed made to take metal bobbins, but I’ve never had any problems using DecoBob plastic bobbins in them. Once the DecoBob bobbins are empty, I simply recycle them to use with my machines that take plastic bobbins! It’s a win-win situation!


DecoBob Prewound Bobbins are designed to be used with your domestic or longarm machine.
DecoBob Prewound Bobbins are designed to be used with your domestic or longarm machine.


A word to the wise: When I was first introduced to prewound bobbins, I found it aggravating that the threads were glued or even tied to the bobbin. Happily, DecoBob Prewound Bobbins are not glued or tied to the bobbin! When you get to the end of the bobbin the thread simply rolls off.


The thread on the DecoBob Prewound Bobbins are not frustratingly glued or tied to the bobbin.
The thread on the DecoBob Prewound Bobbins are not frustratingly glued or tied to the bobbin.


So, blast those myths about what bobbins to use and what threads to put in your bobbins! Remember that using a lightweight, stronger, and more evenly wound bobbin reduces the bulk of your project and creates a more evenly stitched look.

Now that I’ve enlightened you on the benefits of using WonderFil DecoBob Prewound Bobbins, come back tomorrow to see how to use them on different sewing projects.


This is part 1 of 5 in this series.

Go to part 2: Can you really use different thread weights in your bobbin and spool?

I took my first quilting course in September 1994 in Barrie, Ontario, near the armed forces base where I was stationed. After moving to Ottawa in 1996, I joined my first guild. I took more courses and began to buy quilting books and lots of fabrics. Quilting has become my passion. I have made over 150 more quilts since then, and have never looked back. I now share my knowledge of quilting by teaching and doing presentations, and blogging!


  1. Vicki H

    Thanks for the useful info.

  2. Delaine

    Thank you for this information. I have always thought that the bobbin thread had to be the same as the top thread, but now I know differently. Thanks!

    • HI Delaine, Until about two years ago i was also of the same thought, But i was told and found out differently.

  3. Carolyn

    Fabulous tip as always!

  4. Carol

    Interesting article! Thank you!

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