Mettler Silk Finish Cotton 60: The lighter weight cotton thread where less really is more

Anyone who follows us on Facebook will know that we have recently received a brand new cabinet full of Mettler Silk Finish Cotton 60. But what you might not know is what a fantastic all-rounder this thread is. So why is it worth trying Silk Finish Cotton 60 (SFC 60)?

It is called Silk Finish Cotton because of its silky feel, while the 60 refers to the weight of the thread: the higher the number, the finer the thread so a 60wt thread is a medium-fine thread. This means that SFC 60 is finer than other cotton threads like Gutermann Natural Cotton (50wt), Cotton 30 and Cotton 12. It is also finer than other embroidery threads, like Gutermann Sulky Rayon 40 and Rayon 30. However, if you’re looking for an ultra fine thread for something like English paper piecing, then you’ll want 100wt, which is far finer than SFC60.

Mettler provide a handy graphic so you can see how to use their threads, which as you can see below shows that SFC 60 is at its best when used for quilting and embroidery. It can also be used for sewing but it isn’t recommended for use in an overlocker.

Uses for Mettler Silk Finish Cotton 60


SFC 60 is great for quilting. When you piece with it then you lose less of your seam allowance when you press your seams because it lies flatter than seams stitched with a heavier weight thread. This difference is minimal on individual seams, but really builds up across the quilt as a whole and can throw out the measurements for your final quilt. Also, if your quilting is particularly dense then a finer weight thread will give you a lighter, less stiff result. Over the quilt as a whole then a slightly finer thread can really make a big difference!


A lot of people use 40wt rayon embroidery threads, which give a lovely sheen. However, sometimes a matt finish is preferable and you get this with a cotton thread like SFC 60 – you can see in the image below that the Gutermann Rayon 40 on the bottom row has much more shine than the SFC 60 on the top row. Also, if your stitching is particularly dense then you will also find that your embroidery has less bulk with a finer thread.

Top: Mettler Silk Finish Cotton 60. Bottom: Gutermann Rayon 40

When embroidering, SFC 60 looks lovely as your top thread but it’s also great in your bobbin. Pre-wound bobbins and bobbin thread have more stretch to them than cotton, so can lead to puckering on some embroidery stitches (particularly running stitches). Using cotton in your bobbin can help with this issue, and because it is a finer weight then you can wind more on, meaning you have to change bobbins less often.


You can also sew with SFC 60, although this is not its primary use. It’s best to use it with lightweight fabrics as it is finer than other sewing threads.

Less fluff

Where SFC 60 really shines is the beautiful lustre created by the mercerisation process. This, in tandem with the long staple Egyptian cotton fibres that it is spun from, creates a beautifully smooth thread that sheds less, creates less fluff in your machine and is less likely to shred. What this adds up to is less thread breakage and less debris clogging up your machine, which can cause all sorts of issues of its own (if you want to know more about the importance of cleaning our your machine, then read Neil’s post on keeping your machine in tip top condition).

Great colour range

There is a beautiful selection of colours of SFC 60 (take a look at the shade chart on the Mettler website here) that are very colourfast. It comes in 200m and 800m reels, or if you want a 2743m cone so you can stitch uninterrupted for longer then there are 53 colours to choose from.

Our new Silk Finish Cotton 60 stand – just look at those gorgeous colours!

Available online

We have our whole range of SFC 60 thread available on our website. Simply select the colour you would like and then choose the length from the drop down menu. Not all colours come in all lengths but you can refine your search by length if you want a particular amount, or by colour group if you know you want a blue (for example), but want to browse the shades on offer. As always, we are available on email at and telephone on (0115) 9881550 if you would like any advice about your thread choice. I hope you’ll give Silk Finish Cotton 60 a try – let us know what you think in the comments!

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