When choosing sewing thread, strength is often a deciding factor. A thread that breaks too easily can cause seams to come undone, while a thread that is too thick can be difficult to sew with. But which sewing thread is actually the strongest and when do you need the extra strength?
Why does the strength of different sewing threads vary?
The strength of sewing thread depends primarily on the material it is made of and how it is spun. Natural materials such as cotton are soft and supple, but not as durable as synthetic materials. Polyester is stronger and can withstand more stress.
Cotton vs polyester – what lasts best?
Cotton thread – soft and easy to sew with, perfect for thin fabrics and natural materials. Less strong than polyester.
Polyester thread – strong, elastic and durable. Suitable for most sewing projects and lasts longer than cotton.
Extra strong polyester thread – for example Gütermann Extra Strong , designed for heavy fabrics and seams that will withstand extra strain. Perfect for jeans, bags, upholstery fabrics or other projects where regular polyester is not enough.
For everyday sewing on cotton fabrics, regular polyester thread is often the best choice because it combines strength with flexibility. When the project requires extra durability, such as mending jeans or sewing heavy fabrics, Gütermann Extra Strong is a safe bet. Cotton thread, on the other hand, can be a good alternative when you want a more natural feel in the seams, especially in thin cotton fabrics.
Tips for choosing the right thread
- Always match the thread to the fabric's properties
- For regular garments: polyester thread
- For strong and durable materials: Gütermann Extra Strong
- For lightweight fabrics: thin cotton thread for a discreet seam
Frequently asked questions about strong sewing thread
Is polyester thread stronger than cotton thread?
Yes, polyester thread is both stronger and more elastic than cotton, making it more durable in most projects.
When should you use Gütermann Extra Strong?
When sewing thick materials such as jeans, bags or upholstery fabrics. It is made to withstand high loads without breaking.
Can you always use polyester thread?
Almost. Polyester works in most projects, but sometimes it's the feel and look of the material that determines whether cotton thread is a better fit.
