FAQ - Aurifil Thread

Why does Fabric Funhouse only carry one weight of Aurifil thread?

We chose to carry the 40 weight thread in order to complement our selection of cork fabric and waxed canvas. It is the ideal weight for sewing bags, garments, machine appliqué and embroidery, or when a more defined topstitching pattern is desired.

What is Aurifil thread made from?

Aurifil is 100% Egyptian Cotton, grown in the MAKO region of Egypt on the river Nile. When considering the quality of cotton we can make the comparison to that of wine, different geographic areas offer different attributes to the raw material. Aurifil thread is long staple, which refers to the length of the fibers in the raw cotton boll, the length of the fibers determine the quality of the cotton.

Aurifil produces a mercerized thread that is widely heralded by a dedicated tribe of quilters, sewists, and textile artists for its versatility, its strength, its lustrous colour and the fact that it produces virtually no lint. It is super high quality at a competitive price point.

Is Aurifil thread organic?

While Aurifil threads are not organic, they are Oeko-Tex certified. Oeko-Tex certification relates to how a product is processed, including things like dyes and finishes used. It means that their threads are certified free of harmful chemicals and are completely safe for human use. Or… in sewing terms, you and your loved ones can wrap yourselves in those lovingly stitched makes without worry!

How is thread weight determined? Our thread weight is determined by something called Number English or Ne. Ne is a measure of linear density and refers to the number of hanks (840yd or 770m) of skein material that weigh 1lb. For instance, 50 hanks (42,000yd or 38,500m) or our 50wt thread (Ne 50) weighs 1lb. Under this system, the higher the number, the finer the thread.

What does the asterisk (*) after the name of the thread mean?

 Aurifil offers both indanthren and reactive choices. Indanthren colors are the ‘work-horse’ colors. They are seen as more heavy-duty and have a high level of colorfastness. Reactive colors are a bit less stable. They are created with a reactive dye, meaning that the color reacts to and bonds with the fiber during the dyeing process. They are less commonly used with our threads as they are can be more prone to bleed, requiring a different type of care. Please see the following care instructions:

Indanthren Dyed
Maximum washing temperature:
160F / 70C
Maximum ironing temperature:
300F / 150C
Use chlorine: Yes - In cold water
Dry cleaning: Yes
Tumble dry in warm air: No
Reactive Dyed
Maximum washing temperature:
140F / 60C
Maximum ironing temperature:
300F / 150C
Use chlorine: No
Dry cleaning: Yes
Tumble dry in warm air: No