Sewing threads are paramount in terms of the quality, beauty, and durability of the finished projects, irrespective of what type of project is being done. Silk thread is one of the many types of sewing threads available in the market, acclaimed by sewing professionals and enthusiasts alike for its versatility and robust characteristics. This guide will delve deep into best practices concerning silk threads.
First, we will explore the qualities of silk thread like strength, elasticity, and natural sheen which makes it conducive when doing intricate sewing. Following this, we will look into the types of silk thread available and their respective uses to help you make an informed decision when matching a thread to the fabric. Furthermore, this guide will cover thread weight, care alongside correct handling of the silk thread which is important for achieving the quality needed for the project. Whether new to sewing or seasoned, readers will walk away with life changing tips when it comes to sewing.
What are the different types of sewing thread?

There are different categories for sewing threads which include the type of materials used, their structure, and their purpose. Common types include:
Cotton Thread – This type is made from natural fibers that make it quite versatile, working for lightweight to medium fabrics. Cotton thread offers minimal stretch and excellent heat tolerance.
Polyester Thread – This type is quite durable making it elastic as well. This thread works well with synthetic and stretchy fabrics, making it long lasting and highly resilient.
Silk Thread – As the name suggests, this is a premium product that is very smooth, and strong, and can function well with delicate or luxurious fabrics.
Nylon Thread – This type is thin, flexible, and is in high demand for applications that require strength like upholstery or even outdoor fabrics.
Metallic Thread – Mostly used for embroidery, these threads are decorative and are often blended with synthetic fibers.
Specialty Threads – These threads are made for specific projects or tasks like invisible monofilament, topstitch, quilting threads, etc.
By using the right thread, it is possible to use any fabric and enhance the durability and quality of the final product.
Cotton vs. polyester thread: Which is better for your project?
Use the below information to add a list of keywords that cover the entire content.
When purchasing a new sewing machine, people often overlook the fact that choosing the right sewing thread can have a huge impact on their projects too. On the one hand, you have cotton thread – the soft natural fiber that is sometimes referred to as a “breathable” thread and can withstand exceptionally high temperatures. On the other hand, you have polyester thread, a synthetic type of thread created to be stronger and much more elastic than cotton. It is used for quilting or embroidery, for sewing both cotton fabrics and even linens together because of its exquisite stitch definition. But when working with heavy fabrics, cotton thread may not be ideal as it has very low elasticity and can be easily broken under too much strain.
Although cotton thread has many advantages, polyester thread is the more versatile of the two. Because of its superior strength, durability and incredible elasticity, it is narrowing the gap quickly. Unlike cotton threads, polyester threads will not shrink or fade over time, and they do not get damaged easily through abrasions. Because of these advantages, polyester threads are more suited for vital projects like clothes and upholstery which experience high demand as well as high performance.
When applying fine details, such as delicate heirloom sewing or smocking, many prefer cotton because of the soft and smooth finish it provides in comparison to polyester thread. But overall, the choice depends on whether the project requires more durability versus versatility. The right thread indeed depends on the balance of aesthetics and functionality for the fabric as well as the conditions of use.
Understanding specialty threads: Silk, nylon, and embroidery options
Moving on to specialty threads, silk thread is adored for its supple feel, luster, and ease of blending with fabric. They are frequently used in bespoke garments, hand-sewn pieces, and soft embroidery because of their range of motion. Nylon threads are additionally revered for their strength as well as their stretching ability. These synthetic threads are used in heavy duty applications like sewing clothes for furniture or sportswear. Embroidery threads are made from several different materials, including rayon and polyester, and even cotton which is chosen for reasons relating to visual appeal such as shine, color, or texture. Consideration must be given to the requirements of the project like strength, visual appeal, and what sort of fabric was going to be used to select the specialty thread.
All-purpose thread: When to use it and why
Due to how adaptable, strong, and durable the all-purpose thread is, it is compatible with a wide variety of fabrics and can be used for almost any sewing application. This thread is a blend of cotton and polyester which offers good elasticity, allowing it to withstand wear. This makes the all-purpose thread ideal for use with both machinery and hand sewing tools. It is often the first choice for gaining construction, performing quilting, and general repairs.
Technical Parameters
Material Composition: 100% polyester or a polyester-cotton blend (approximately 50/50)
Tensile Strength: Ranges from 2.5 to 4 N (Newton) depending on thread thickness.
Thread Weight: 40wt ensuring easy compatibility with various sewing machines.
Elasticity: Moderate elasticity allows fabric movement without the risk of tearing.
Compatibility: Fits all medium weight fabrics such as cotton, poly-blends, and lightweight denim.
All-purpose threads are the go to choice for sewing projects that cannot be specific for use with a certain fabric because of how durable and flexible it is. The one downside is it is unsuitable for decorative finishes and heavy duty applications.
How do I choose the right thread for my sewing machine?

While choosing the appropriate thread for your sewing machine, you must take into account some of these details:
Thread Type: Choose an appropriate thread type for the fabric and project. For most purposes, all-purpose polyester thread is good enough, but use cotton thread for natural fabrics and heavy-duty threads for thick materials.
Thread Weight: Use the appropriate weight of threads; thick threads are indicated by lower numbers suitable for heavier fabrics while higher numbers indicate lighter threads which are used for finer fabrics.
Machine Compatibility: Check that the thread works with your sewing machine. Use good quality threads to avoid breakage and tension problems while stitching.
Project Needs: For decorative purposes, use specialized threads such as metallic or embroidery threads, while structural seams should be done with neutral, durable threads.
Factors aligned with your sewing goals will aid increase efficiency and professionalism.
Matching thread weight to your fabric and project
The effectiveness of a sewing project greatly relies on the threads chosen, as it impacts the ending look, strength and stitching processes. When looking into thread weight, it is common to see ranges from coarse (12wt) to fine (100wt), with coarse referring to heavier threads and fine being the opposite. Here’s how to know which weight to choose:
Fabric Type and Thickness:
Fine threads (80wt or 60wt) are suitable and recommended for lightweight fabrics like silk, chiffon or voile.
Medium-weight fabrics such as cotton or linen go perfectly with 40wt threads, because of their versatility.
Coarse threads like 30wt and 20wt are suited for thick or heavy duty materials. Denim, upholstery and canvas fabrics require heavy stitching, and these threads will make the seams strong and visible.
Project Type:
40wt thread of polyester or cotton is suggested for most fabrics as it is strong and versatile, making it suitable for construction seams.
Delicate embroidery, intricate stitching and decorative quilting require fine threads with higher weights, whereas bolder dimensional designs look best with heavy threads.
When it comes to needles, not all are created equally. Let’s take a look at some pointers:
The needle size should match the thread weight. For instance:
Small needles like 60/8 or 70/10 are required for threads finer than 50wt.
Threads standard 40wt work well with needles 80/12 or 90/14.
Larger needles such as 100/16 or 110/18 are typically used for heavyweight threads (30wt or lower).
Threads like polyester are great for sewing because they suit many different fabrics; however, cotton threads are the preferred choice for quilting due to their stronger more natural finish and matte appearance. Silk threads (100wt) are usually best for delicate invisible stitching.
These carefully chosen needles guarantee precise stitching yielding high-quality outcomes for any sewing application.
Considering thread fiber content for optimal results
I make it a point to adjust the contents of a certain thread to the fabric I am using to get the optimum results and these are my results for silk threads for super/fine fabrics and cotton/ linen natural threads, I have found from my experience that cotton thread works better since they are stronger and more compatible. While for synthetic materials, I prefer using Polyester threads because of their elasticity and high resistance to shrinking. Having different thread materials guarantees that the fabric remains intact and is easy to maintain as well.
Selecting the best thread for machine embroidery
The thread I prefer for machine embroidery is high quality polyester thread. They are strong, durable and do not fade when washed frequently or exposed to UV light. Most embroidery designs can be executed with polyester thread between the weights of 40wt to 60wt as they provide a smooth finish. Rayon threads in the same weight (40wt) range are excellent for delicate or decorative projects as they offer a vibrant sheen, although they are less robust to damage than polyester threads. With polyester, I adjust my machine’s tension settings to around 4-6 while I’m doing standard embroidery which is more than enough. Also, because polyester has more lint compared to rayon, I make sure to use lint free threads with tighter wind to avoid excess threading. Meeting these parameters allows me to achieve precision with vivid outcomes in my embroidery work.
What’s the difference between hand sewing and machine sewing thread?

The process of hand sewing thread is usually thicker and stronger than that of machine sewing. It has a waxed coating to prevent tangling during the repetitious and taut processes of manual stitching. On the other hand, the threading in machine sewing is not only smoother but is also compatible with the high speed movement of the sewing machine. It is properly treated to reduce lint, making it more flexible allowing for compatibility which diminishes wear on the moving components of the sewing machine.
Thread characteristics for hand stitching vs. machine sewing
If my research is correct, hand stitching thread is usually thicker and more often than not waxed to avoid entanglement during manual use. It is designed to endure the strain which results from being drawn through fabric repeatedly by hand. On the contrary, machine sewing thread is thinner and designed to work at high speeds without any issues. It is created to shed less fluff, which increases the durability and performance of the sewing machine. Threads are made to serve different purposes which enables them to maximize performance and durability.
When to use silk thread for hand sewing projects
Silk thread can be a good option for hand sewing projects where a smooth, strong, and flexible thread is needed. Silk threads also have natural elastic properties which allow them to move along with the fabric. This characteristic makes it ideal for sewing lightweight materials like silk where a seamless finish is required. Aside from that, silk thread is softer and less likely to damage or leave marks on fine fabrics.
For technical usage parameters:
Weight of Thread: Silk thread is available in 50wt weights or even finer which is ideal for delicate stitching.
Coating: Some silk threads are slightly coated to reduce the amount of friction while stitching, resulting in smart looking seams.
Type of Fabric: Works best with natural fibers such as silk, cotton, or wool.
Application: Commonly used for activities such as hemming, quilting, or stitches that require strength alongside elegance.
How does thread weight affect my sewing projects?

Stitching involves different functions. Each thread weight has its importance. Threads that are heavily weighted and stronger, such as 30wt or 12wt, are best suited for durability purposes or decorative stitching because they create visible and bold stitches. On the other hand, 50wt and finer threads are lighter in weight, making them ideal for detailed ornamentation such as quilting and heirloom sewing. The correct selection of thread weight also ensures that the fabric and project type are compatible with each other, minimizing breakage, tension, puckering, and other issues.
Understanding thread weight systems: Tex, denier, and wt
Thread systems are often perplexing because of the different measurement systems that exist. Each of the three widely utilized systems Tex, denier and weight (wt) has its unique way of expressing thread thickness and is critical for the election of the appropriate thread for your work.
Tex
Tex is the measurement that indicates the mass of 1000 meters of a thread in grams. For example, a thread marked as Tex 30 weighs 30 grams every 1000 meters. This type of system is popular in industrial settings because of its wide application when comparing different thread types. Tex systems are also easy to understand for the general public which increases its usability. A higher Tex value means there is thicker and heavier thread.
Denier
Denier is a unit that measures the mass of a thread in grams with every 9000 meters of length. Deniers are popularly used in synthetic fibers such as polyester and nylon. A thread marked 100 D has a mass of 100 grams per 9000 meters of the thread. Similarly to tex, higher denier values correspond to thicker and heavier threads. The denier system is favorable in the textile field for fabrics and tent materials.
Weight (WT)
“Weight” (or “wt”) is the unit of measurement in sewing and quilting. It is also an indirect measurement representing the number of kilometers of thread that would weigh a kilogram. For example, a 50 wt thread weighs one kilogram, which means 50 kilometers of thread are used. This also results in a finer thread than what a 30 wt does since higher numbers correspond to thinner threads.
Comparison of Parameters
Tex: Higher value = thicker threads. (E.g. Tex: 40 > 20 Tex)
Denier (D): Higher value = thicker threads. (Eg. 150D > 75D)
Wt: Lower value = thicker threads. (E.g. 40 wt > 50 wt)
These systems allow for compatibility with the types of projects one has in mind, such as stitch type, fabric type, strength needs, and more Although Tex is preferred for consistency, WT is more straightforward for traditional sewing endeavors while Denier is the best in specialized cases. Always follow your sewing machine manual for best results.
Choosing the right thread weight for different fabrics
The first thing I mind when figuring out which thread weight is best suited for a particular fabric is the texture and weight of that fabric. Threads with finer numbers like 60wt and above are ideal for lightweight fabrics, as they add subtle seams that do not cause puckering on the fabric. While for medium-weight fabrics such as cotton or linen, a 40wt thread works perfectly as it’s extremely versatile and balanced between strength and visibility. For heavier fabrics like denim and canvas, I prefer using thicker threads, generally 30wt and lower, as they provide the necessary seam strength and durability. To avoid issues related to tension or breakage, I always ensure that the thread matches the fabric’s weight and specific application using the sewing machine’s recommendations.
What are the best threads for specific sewing tasks?

When trying to determine which threads to use on which sewing tasks, the requirements of the sewing project and the type of fabric being worked on would dictate the decision. General sewing can benefit from the use of an all-purpose thread made from polyester as it is quite strong. Most quilters would argue that a thread made from 100% cotton is ideal because it blends with the natural textures of fabrics and is great for stitching cotton materials. When embroidering, one would usually need a smoother type of thread such as rayon or polyester because they come in various colors and their fineness allows for amazing detail work. For upholstery work, durable threads must be used such as heavy-duty nylon or bonded polyester which are resistant to tension and stronger than normal fabrics. On the other hand, wooly nylon or textured threads can be used on stretch fabrics as they are capable of maintaining elasticity in the seams. Since that is the case, all these threads have been designed for longevity of use, and the ability to finish and perform a task to precisely fit the specific needs of different sewing tasks.
Quilting thread: Cotton or polyester?
The choice between cotton and polyester thread for quilting heavily relies on the result of the project and what it seeks to achieve. Cotton threads remain a popular selection owing to their organic structure, non-sheeny texture, and close-matching properties with cotton materials. It is perfect for making less rigid, soft, and classical composites of quilts. Poly thread, on the other hand, has a higher tensile strength and elasticity, thus a reduced risk of breakage or fraying while using high-speed sewing machines, or after prolonged use. It also has low luster and is available in a wider range of colors than cotton, which makes it more appropriate for contemporary or ornamented styles of quilting. In the end, cotton threads are suitable for heirloom or natural-fiber projects, whereas polyurethanes score over in strength and application range. Especially for functional or overused quilts where strength and versatility are needed.
Serger thread: Tex 25 vs. Tex 70
The decision for Tex 25 and Tex 70 serger threads depends on the intended stitch and the fabric’s nature. Tex 25 thread is finer and lightweight which makes it suitable for lingerie, knits, and sheer fabric because of how the thread’s thickness allows smoother stitching.
In contrast, Tex 70 thread is more bulky and strong than Tex 25 and is best used on upholstery, denim, and canvas since it can endure garment construction severely beating fabrics. This thread is the best when it comes to stitching seams that are always under tension, experiencing these and stress.
Key Technical Parameters:
Tex 25:
Recommended Needle Size: 70/10 to 80/12
Applications: Light fabrics, detailed stitching
Strength and Durability: Lower tensile strength, sufficient for lightweight materials
Tex 70:
Recommended Needle Size: 90/14 to 110/18
Applications: Heavy fabrics, high-stress seams
Strength and Durability: High tensile strength, designed for rigorous use
Consideration of these parameters will help obtain the desired performance as well as thread fabric compatibility.
Upholstery thread: Strength and durability considerations
When thinking about upholstery, thread strength and durability are the two most paramount aspects. For hardcore usage, I will always encourage everyone to go for high tensile threads like Tex 70. It gives the strong seam strength required for upholstery, which is under regular use and stress. Also, to avoid the thread being broken I encourage using the correct size of the needle, somewhere from 90/14 to 110/18 which will help in stitch formation. Thus, for projects such as furniture reupholstering or outdoor applications, I’m sure a bonded nylon or polyester thread will be the number one choice for resistance against abrasion, while also providing long-term performance.
References
Frequently Asked Questions (FAQ)
Q: What is the difference between embroidery thread and sewing machine thread?
A: Embroidery thread is typically shinier and softer, designed for decorative stitching, whereas sewing machine thread is stronger and used for construction stitching. Polyester embroidery thread is common for its durability and sheen, making it suitable for embroidery and sewing machines.
Q: Can I use spun polyester thread in my sewing machine?
A: Yes, spun polyester thread is versatile and can be used in most sewing machines. It is strong and durable, making it an ideal choice for a variety of sewing projects including quilting and sewing.
Q: What is the best type of thread for serging?
A: For sewing, polyester sewing thread is often recommended due to its strength and elasticity. Polyester bonded thread is also a good choice as it helps keep seams secure and minimizes breakage.
Q: How many yards are typically included in a cone of thread?
A: The yardage on a cone of thread can vary, but it often includes several thousand yards, making it economical for large projects or continuous sewing needs. Always check the specific yd measurement when you shop for sewing thread.
Q: What is the purpose of using a poly core thread?
A: Poly core thread, which has a polyester core wrapped with cotton, combines the strength of polyester with the softness of cotton. It is used for both construction and decorative stitching, providing a balance of durability and finish.
Q: What is a good thread weight for quilting and sewing?
A: A 50 wt thread is commonly used for quilting and sewing as it is thin enough to blend well into fabric yet strong enough for durable seams. Polyester sewing thread in this weight is a popular choice.
Q: Why is low lint thread important for sewing machines?
A: Low lint thread helps keep your sewing machine clean and reduces the need for frequent maintenance. This is particularly important for high-speed embroidery and sewing machines where lint build-up can affect performance.
Q: What types of projects benefit from using dual duty threads?
A: Dual duty thread is suitable for a wide range of projects, including garments, home decor, and drapery. Its strength and versatility make it a great all-purpose thread for various sewing tasks.
Q: Can I get free shipping when purchasing a sewing thread set?
A: Many online stores, including superiorthreads.com, offer free shipping on orders above a certain amount. Be sure to check their shipping policies or look for promotions when purchasing a sewing thread set or other supplies.