What is the Best Embroidery Machine Thread? – Types Explained

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There are so many different machine embroidery threads available that you might not know where to start as a beginner!  I, too, had a slew of questions when I first started embroidering.  For instance, what is the best embroidery machine thread?  What thread goes in the bobbin?  What material or weight of thread works with an embroidery machine?  There were so many things I needed to learn.

Since beginning to embroider, I’ve now learned through experience, print resources, and local embroidery enthusiasts that not all threads are created equal.  Sewing machine thread is different than embroidery machine thread, which is even different from serger thread!  So what’s the big deal about machine embroidery thread?

That’s what I want to teach you today in this beginner embroidery tutorial.  We’ll learn about the different types, weights, and finishes of embroidery thread and how to pick the best machine embroidery thread for your next product.  So, let’s get started!

(Now to note, hand embroidery and machine embroidery use different types of threads, so this post will be focusing on the best threads for machine embroidery only.)

Best Machine Embroidery Thread Choices Explained

Checking for Quality Embroidery Thread

Not every thread you see online or in-store is going to be a quality embroidery machine thread.  Choosing a poor-quality or incompatible thread can lead to threads breaking, shredding, or fraying.  This is not fun, especially if you’ve decided to embroider something expensive or sentimental!

So what should you look for?  Check to make sure the thread is smooth and uniform with no lumps, bumps, or visible fibers sticking out from it.  Because embroidery happens so fast, minimizing friction between the thread and the eye of a needle means choosing a smooth, uniform thread.  This also means choosing machine embroidery thread over sewing machine thread in most cases. 

Embroidery Thread Weight Explained

Threads are characterized by their weight, which is a measure of the thickness of the thread.  The larger the weight number, the thinner the thread.  Thus, a 50 wt thread is thinner than a 40 wt thread.  In general, machine embroidery designs are digitized for a 40 wt thread, unless otherwise stated.  This is the most common weight for embroidery machine thread.  So, be careful veering from this weight without understanding how changing weight will affect the design.

Because while the weight of your thread might seem trivial, it actually plays a big part in the finished product!  For instance, if you need threads to really fill in an embroidery design, a thin thread isn’t going to provide as much coverage as a thicker thread.  Finer threads (larger wt) also work great on delicate fabrics, whereas thicker threads (smaller wt) are better suited to heavyweight fabrics.

Before selecting an uncommon thread thickness, make sure to check your machine’s user manual to confirm the weights of thread it can accommodate.  Also, consider that larger threads may have more difficulty fitting through the eye of a small needle, so adjust accordingly.  (Read: guide to choosing the best embroidery machine needle size and type if you need more information about that!)

Best Embroidery Machine Threads – Top Thread Types

There are three main types of everyday embroidery thread that you can use in the spool as the top thread: polyester, rayon, and cotton.  Then, there are several types of specialized threads that also work great on an embroidery machine with some special TLC.  I’ll discuss upper thread options first, and then we’ll move onto bobbin thread types.

Rayon Machine Embroidery Thread

Threadart 40 Cone Rayon Embroidery Thread Set | Jewel Colors |1000m cones 40 wt | For Sewing Beautiful Decorative Stitches and Free Motion Machine Embroidery

Rayon embroidery thread is a longtime favorite of embroidery enthusiasts.  It’s known for its gorgeous, lustrous, and reflective sheen.  Shinier than most other thread types, it’s also strong and durable and comes in a large color range.  Made of organic cellulose, rayon thread is soft to touch.

It’s been decreasing in popularity over the years and slowly being replaced by polyester thread.  Why?  Some brands of rayon threads bleed when washed, they don’t withstand bleaching well, and they fade over time and in the sun.  When I first bought my machine and was looking for the best embroidery thread for it, the lady helping me recommended against rayon.  Since I live in the hot, humid South, apparently rayon thread doesn’t hold up as well here as it does in lower humidity, cooler climates.

Polyester Machine Embroidery Thread

New brothread 80 Spools Polyester Embroidery Machine Thread Kit 1000M (1100Y) Each Spool - Colors Compatible with Janome and RA Colors

Polyester embroidery thread is becoming more and more popular over time thanks to its great properties.  It has a beautiful sheen and luster and also comes in a large variety of colors.  It’s very strong and resistant to shredding from friction as it runs through the eye of the needle.

Often polyester and rayon threads are interchangeable when stitching designs.  So, what is the difference between rayon and polyester embroidery thread?  Is rayon or polyester better?  Well, rayon threads have a better luster, but polyester threads are usually stronger, won’t fade over time or in the sun, don’t bleed in the washer, and can withstand bleach.  

I’ve found that the best machine embroidery thread for my Brother machine and stitching needs is polyester thread.  It’s what was initially recommended to me, it’s affordable, and since I’ve not ever had problems with it, I’m sticking with it! I like using Brothread because it is good-quality and budget-friendly.

Cotton Embroidery Machine Thread

Cotton Threads-Sewing Thread- 85rolls (85000Y) Cotton Rainbow Colored Embroidery Thread 40WT

The least popular of the three main types of thread, cotton embroidery thread is formed from natural fibers and comes in the largest variety of weights. 30 wt is the most common for machine embroidery, but there are thicker and thinner varieties available as well. 

Most cotton embroidery threads have a matte finish rather than the glossy sheen seen with rayon or polyester.  This can be great if you’re looking for a more natural finish, for instance when embroidering lace. 

As a downside, cotton embroidery threads are fragile due to a lack of elasticity. Thus, they’ll break more easily than the aforementioned types of embroidery thread. 

They can also shrink when washed (unlike polyester), can fade in the sun, and can fuzz up your embroidery machine if used with complicated designs.  

Silk Embroidery Thread

Also a natural fiber embroidery thread, silk thread is a specialized type of thread that is strong yet luxurious.  It’s very expensive and difficult to find but pairs well with super delicate fabrics like silk and satin.

Metallic Embroidery Thread

New brothread 20 Assorted Colors Metallic Embroidery Machine Thread Kit 500M (550Y) Each Spool for Computerized Embroidery and Decorative SewingMetallic machine embroidery threads have an internal core wrapped with metal foil.  While these threads produce a shiny, awesome finished product, they are notoriously difficult to embroider with.  They break easily at high speed and require a special needle as well as fine-tuned thread tension.  Here are some tips for embroidering with metallic thread if you need help, though!

Glow-In-The-Dark Machine Embroidery Thread

Simthread Glow in The Dark Embroidery Machine Thread (1100Y 6C)

Glow-in-the-dark thread is a new addition to my thread collection, and I’ve enjoyed using it so far!  (Read: how to use glow-in-the-dark thread!) It also requires a special needle and can be a bit finicky to set up.  It comes in a fair variety of colors, but they mostly glow different shades of greenish-yellowish.  Some colors are brighter than others, too. 

Need a cool Halloween project?  Consider glow-in-the-dark thread next time.  (And, check out my list of where to download free Halloween embroidery machine designs!)

Variegated Embroidery Threads

New brothread 25 Colors Variegated Polyester Embroidery Machine Thread Kit 500M (550Y) Each Spool for Brother Janome Babylock Singer Pfaff Bernina Husqvaran Embroidery and Sewing Machines

Variegated embroidery machine threads are made from two or more colors in a variable pattern.  They can be made from rayon, polyester, cotton, or even silk.  Using variegated thread has been much simpler than using other specialized embroidery machine threads like those pesky metallics!

Bobbin Thread for Machine Embroidery

best bobbin thread for machine embroidery

Unlike sewing, where you use the same thread in the bobbin case as on the spool, the bobbin thread for an embroidery machine is typically finer than the top thread.  Because it’s lighter weight, this reduces embroidery thread bulk.  As such, the top stitches lie smoother and dense designs don’t become too stiff or puckered.

The best bobbin thread for my embroidery machine is 100% polyester 60 wt thread, but some machines may require a different weight.  The best thing you can do is to check your machine user manual to figure out what your machine requires.

One great thing about bobbin embroidery thread is you can use white thread for most projects if the back won’t be seen.  Thus, there’s no need to change the bobbin thread color after every color change!  What a time-saver.  Of course, if your bobbin thread is going to show on the front of the project or be visible (like embroidering free-standing lace), it’s important to choose similar colors.

You can wind your own bobbins if you want from bobbin thread (only comes in limited colors), but I prefer to buy pre-threaded white bobbins, which are the coolest thing ever!  Just make sure you know if this will work with your machine and the size of bobbin your machine needs.

How many colors of thread do you need?

With sewing, while you can get away with white, black, and a few neutral colors of threads for most projects, embroidery is different.  Photo-stitched and intricate designs can feature over a dozen colors!

So, should you buy the 40 pack or go all out on a 200+ pack?  When I first started embroidery, I began with a Floriani 30-pack of 40 wt polyester thread.  This gave me an idea of the colors that I used frequently, and I was easily able to make substitutions in embroidery designs for the threads my collection didn’t contain.  Turns out, white, black, and red are my three most frequently used colors by far!  When I ran out of these colors, I then bought the humongous spools of those colors to be most cost-efficient.  (Note: these big spools will not fit on your machine’s spool holder, so you’ll need a separate one.)  When I started getting low on other colors, I later added a big lot of different colored spools to my collection and now just replace individual spools as I run out.

Best brands of embroidery machine thread?

There really is no best answer to this question!  You can ask 10 embroidery enthusiasts their favorite threads, and you’ll probably get at least 5 different answers.  First, there’s the rayon vs polyester debate, which is largely up to user preference.  Then, certain machines have recommendations for certain brands.  Certain machines also just work better with certain brands.  Cost plays a part as does the intended use of embroidered items.

Examples of thread brands include Sulky, Gutermann, Coats and Clark, Madeira, Isacord, Floriani, Simthread, Embroidex, and Brothread.  I started splurging on Floriani thread per a dealer recommendation at first but got discouraged by the cost and my dwindling craft supplies budget.  I eventually decided to try Brothread from Amazon, and I’ve had no problems with it in my machine so far.

A Few More Thread FYI’s + Troubleshooting Tips

  • When changing from one color of thread to another, don’t pull the thread out of the machine back towards the spool.  Instead, clip the thread before it enters the thread guides, and pull it down and out.  You may risk offending your tension discs if you pull thread the wrong way through them!

how to properly change embroidery threads

  • Replace your needle if you have skipped stitches, threads breaking, or other stitching problems that don’t have a known cause.  Sometimes a dull, bent, or nicked needle can wreak havoc!
  • Threads are commonly wound one of two ways: cross-wound or stacked.  Stacked threads have threads wrapped parallel and work best on vertical machine spools.  Cross-wound have a crisscross formation and perform best on horizontal machine spool holders.
  • I can’t live without my thread stand!  Since a multi-needle embroidery machine is not in the budget, nor do I have space for it, I line my embroidery threads up in order on the thread stand.  The thread stands also work well for holding very large spools of embroidery thread.  

types of machine embroidery threads on a stand

Best Thread for Machine Embroidery – Conclusion

I hope you’ve now learned how to choose the best embroidery machine thread for your project.  So, what do you prefer to use?  Rayon, polyester, or cotton?

And if you’re looking for storage inspiration, check out my wall thread rack redos and other storage ideas.

best embroidery machine thread: rayon vs polyester


  1. Kathleen S. Gutierrez says:

    From a new beginner to machine embroidery, I have lots of questions. You have answered one of my biggest questions. The shop where I bought my machine carries only one brand. I had no idea there were so many options! Thank you very much for your invaluable information.

  2. Annette Casey says:

    I am trying to get answers on what machine embroidery thread to use on hot pads, can you help? My machine in the NQ 1600e brother. I know that cotton does not melt, what would you suggest?
    Thank you

    1. Yes, I’d personally use cotton embroidery thread for both the top thread and in the bobbin.

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