Choosing the right thread is often the deciding factor on the durability of the seam and the appearance of the product. Many novice seamstresses make the mistake of relying solely on universal polyester spools purchased on sale at the nearest supermarket. Actually thread quality directly affects the tension, the frequency of breaks and even the condition of the sewing machine itself.
The modern market offers a huge range of materials, from natural cotton to high-tech synthetic fibers coated with Teflon. An incorrectly selected thread can cause skipped stitches or the formation of a “beard” on the wrong side of the product. It is important to understand that perfect thread There is no solution for all cases, and each tissue type requires a different approach.
In this article we will analyze in detail the main characteristics, help you understand the markings and learn how to select consumables for a specific task. You will learn why cheap threads can be dangerous for the mechanisms of your equipment and how to save money without losing quality.
Main types of threads and their characteristics
The first thing a seamstress faces when choosing is the fiber composition. The strength, elasticity and heat resistance of the seam depend on it. The most common are cotton threads, which are ideal for natural fabrics, but tend to shrink and lose strength when wet.
Synthetic options such as polyester and nylon have high tensile strength and rot resistance. Polyester Today it is considered the “gold standard” for household sewing, as it combines the durability of synthetics and a pleasant matte finish reminiscent of cotton. However, for particularly strong seams, for example when working with leather or canvas, nylon thread may be required.
Twisted and reinforced threads deserve special attention. Reinforced thread consists of a polyester core covered with a layer of cotton or polyester, making it incredibly strong and smooth. Such threads practically do not break and glide perfectly in the needle, which reduces friction and heating.
- 🧵 100% Cotton - natural, good absorbency, but prone to shrinkage.
- 🧵 Polyester - versatility, resistance to stretching and fading.
- 🧵 Silk — high strength with a small diameter, ideal for delicate fabrics.
- 🧵 Metallized - decorative effect, require the use of special needles.
⚠️ Attention: Never use old, dry threads that have been stored for decades. Polyester becomes brittle over time and will tear under tension, while cotton may simply crumble into dust.
How to decipher the markings and choose a number
On the label of each reel you can find a marking that looks like a set of numbers, for example, 45LL or 50/3. The first number indicates the thickness of the thread: the larger it is, the thinner the thread itself. It seems counterintuitive, but this is the international standard for metric numbering.
The second parameter is the number of additions. Designation 50/3 indicates that the thread consists of three number 50 fibers twisted together. For household sewing machines, it is considered the most optimal number 40-50. Thinner ones (60-80) are used for hidden seams or sewing from the finest silk, and thicker ones (20-30) are used for decorative stitching or working with dense materials.
It is also important to pay attention to the letter designations indicating the type of fiber. For example, the letter “L” means lavsan (polyester), “LH” means lavsan and cotton. Understanding these abbreviations will help you avoid purchasing filaments that can melt from rubbing against the needle at high speeds.
⚠️ Attention: Using thread that is too thick (number 10-20) in a household machine without changing the tension and needle settings is guaranteed to break the shuttle mechanism or disrupt the rhythm of the machine.
To correctly select the thickness, there is a simple relationship: the thinner the fabric, the higher the thread number. Ignoring this rule will result in the needle leaving a hole that is too large, and the fabric will “gather” or begin to cut through.
Correspondence table for threads and fabrics
To simplify the selection process, it is recommended to use a matching reference table. It helps you quickly navigate the variety of materials and choose the optimal fabric-thread pair.
| Fabric type | Recommended thread number | Fiber type | Needle number |
|---|---|---|---|
| Silk, chiffon, organza | 60-80 | Silk, Polyester | 60-70 |
| Cotton, linen, viscose | 40-50 | Cotton, LH | 75-90 |
| Jeans, suit fabric | 40-50 | Polyester, Reinforced | 90-100 |
| Thick coat, leather | 30-40 | Nylon, Reinforced | 100-110 |
Using the data from the table is a base, but it is always worth doing a test stitch on a scrap of material. The microstructure of the fabric can make its own adjustments, requiring tension adjustments.
The influence of thread quality on the operation of a sewing machine
Many owners of expensive equipment do not even suspect that problems with equipment are caused by saving on consumables. Cheap threads often have uneven winding and hairiness. The fluff, falling off, enters the shuttle compartment, mixes with lubricant and forms a dense coating that blocks the movement of mechanisms.
In addition, poor-quality thread may have thickenings (“bumps”) that get stuck in the eye of the needle or the needle hole of the needle plate. This leads to sudden jerks when sewing, thread breakage and even needle breakage, fragments of which can damage the shuttle.
Professional threads such as Madifil or Gutermann, undergo a special treatment that removes lint. This significantly extends the life of your car. Regular cleaning A dust protection machine is still necessary, but with good threads it will have to be done much less often.
It is also worth considering the direction of winding on the reel. Vertical winding (crosswise) is intended for installing the coil vertically, horizontal - for horizontal placement. Using the wrong type of winding without special holders may result in uneven thread feeding and looping at the bottom.
What is the “memory effect” of threads?
The memory effect is the ability of a thread to retain its curl shape after unwinding from a spool. Cheap threads are often twisted into a spiral, which prevents the needle from passing through the eye. High-quality threads straighten immediately after leaving the bobbin.
Review of popular manufacturers
There are many brands on the market and choosing between them can be difficult. German companies are traditionally considered leaders in the segment of professional materials Gutermann and Madeira. Their products are characterized by stable quality, no shedding and perfect smoothness.
The middle price segment is occupied by Turkish and Chinese brands, such as Dadar or Gamma. They offer good value for money for everyday home sewing. Threads Dadar, for example, are widely used in ateliers for mass-market tailoring.
- 🏆 Gutermann (Germany) - standard of quality, high price, ideal for important projects.
- 🏆 Madeira (Germany) — excellent threads for embroidery and overlocking, rich palette.
- 🏆 Gamma (Russia/China) - affordable cotton, suitable for study and rough work.
- 🏆 Ariadna (Türkiye) - good polyester, often used in clothing production.
Inexpensive domestic options are quite suitable for training and rough work (testing, sweeping). But for a clean product that should last for years, it is better to invest in a reel from a trusted brand.
Buy mini reel sets (color sets) from famous brands for home use. It's cheaper than buying full-size bobbins of each color, and the thread won't have time to deteriorate.
Tips for storing and caring for threads
Even the most expensive threads can deteriorate if stored improperly. The main dangers of threads are direct sunlight, high humidity and dust. Ultraviolet radiation destroys the polymer structure, making the thread brittle, and humidity can lead to mold on natural cotton.
It is best to store coils in closed organizers, protected from light. If you notice that the thread has become dry and brittle, you can try to restore it by placing the spool in a sealed bag with a damp (but not wet) piece of fabric for a day. However, this is a temporary measure, and it is better not to use such threads for critical seams.
☑️ Checking thread quality before sewing
It is also worth keeping order in the workplace. Dust that settles on open bobbins will get inside the machine when sewing. Regularly wipe the thread shelves with a damp cloth.
⚠️ Attention: Do not store threads near heating devices. Dry air makes synthetic fibers brittle, which will lead to constant breaks during operation.
Frequently asked questions (FAQ)
Can I use hand sewing thread in a machine?
Technically it's possible if they fit into the needle, but it's not recommended. Hand sewing threads often have a wax coating or special twist that can clog the machine's mechanism. Additionally, they may be too weak for machine speed and will tear.
Why does the thread constantly break when sewing?
There can be several reasons: a dull or damaged needle, incorrect threading, too much top tension or poor quality of the thread itself. Also check if there are any burrs on the needle plate.
What is the difference between lavsan and cotton threads?
Lavsan (polyester) is a synthetic material, it is stronger, more elastic and does not rot. Cotton is a natural material, it burns, absorbs moisture and is less tensile, but it is more pleasant to the touch and is better suited for natural fabric so that the seam “breathes”.
How to remove lint from threads if they have already been purchased?
It is difficult to completely remove the lint, but you can pass the thread through a piece of damp sponge or cotton wool before entering the machine. However, it is better to immediately buy threads marked “lint-free” or “for overlocker” if lintiness is critical.
How long do sewing threads last?
When properly stored (in the dark, dry, at room temperature), synthetic threads can be stored for decades without losing their properties. It is recommended to use cotton threads for 5-7 years, as organic fiber degrades over time.
Choosing the right thread is 50% of success in sewing. Saving on a spool can lead to damage to expensive fabric or breakdown of the sewing machine, so choose high-quality materials from trusted brands.