Introduction to Felting: A Beginner’s Guide
Felting is one of the oldest ways of making fabric, with a history that stretches back thousands of years. Long before weaving and knitting became widespread, people were using wool to create strong, insulating textiles for clothing, shelter, and everyday life.
Some of the most remarkable surviving examples of early felt have been discovered in Central Asia, including beautifully preserved textiles found in the Pazyryk burial sites in the Altai Mountains. Among these are intricately decorated felt pieces—such as saddle blankets and horse trappings—which show that felting was already a highly developed and skilled practice over 2,500 years ago.
Traditionally, felt was essential to nomadic cultures, particularly across Central Asia, where it was used to make tents, rugs, clothing, and more. Even today, felt remains an important and versatile material, used in everything from handmade textiles to industrial products.
In recent years, felting has seen a resurgence among makers and textile artists, with many people rediscovering its creative potential and hands-on appeal.
If you’d like to learn more about the textiles discovered in the Pazyryk burial sites, you can read more in this article here:
https://www.penn.museum/documents/publications/expedition/32-1/Rubinson.pdf
What is Felting?
Felting is the process of turning loose fibres—most commonly wool—into a dense, matted fabric. Unlike woven or knitted materials, felt is a non-woven textile, meaning it is created without spinning yarn or using a loom.
This transformation happens because wool fibres have tiny scales along their surface. When exposed to heat, moisture, and friction, these scales open and begin to catch onto each other. As the fibres are worked, they tangle and lock together, forming a strong, cohesive fabric.
Many people have accidentally experienced felting by putting a wool jumper through a hot wash—only to find it has shrunk and thickened. This same process can be used intentionally to create a wide range of textiles, from soft, delicate fabrics to firm, structured forms.
One of the most appealing things about felting is its simplicity. With just wool, water, and a bit of movement, you can transform loose fibres into a completely new material—making it an accessible and rewarding technique for beginners to explore.
What Happens When Wool Felts?
Felting happens because of the unique structure of wool fibres. Each fibre is covered in tiny overlapping scales, a bit like the tiles on a roof.
When wool is exposed to moisture and heat, these scales begin to open up. If the fibres are then moved or agitated, the raised scales start to catch onto each other. As this continues, the fibres tangle and gradually lock together.
As the fibres become more tightly interlocked, the material shrinks and thickens, transforming loose wool into a dense, cohesive fabric—what we recognise as felt.
This process is not reversible. Once the fibres have locked together, they cannot be separated again, which is why wool garments can shrink permanently if washed in hot water or agitated too much.
This is the same process that causes a wool jumper to shrink in the wash—just used intentionally.
Types of Felting
There are several different ways to felt wool, each using slightly different techniques to achieve a similar result—transforming loose fibres or fabric into a dense, cohesive material.
🌊 Wet Felting
Wet felting is the oldest and most traditional method. It involves using warm water, soap, and gentle agitation to encourage the wool fibres to tangle and lock together. This method is often used to create flat pieces of fabric, vessels, or sculptural forms.
🪡 Needle Felting
Needle felting is a dry technique that uses a special barbed needle to tangle fibres together. As the needle is repeatedly inserted into the wool, it catches and interlocks the fibres, allowing you to build up shapes and details. This method is popular for small projects, embellishment, and sculptural work.
🧶 Fulling (Felted Knitting or Fabric)
Fulling refers to the process of shrinking and thickening an already knitted or woven wool fabric. While it is often called “felting,” it is technically a slightly different process, as the fabric has already been constructed before it is felted.
In wet felting, “fulling” can also refer to the later stage of the process, where the already felted fibres are further worked to shrink, strengthen, and firm up the material.
Fulling is commonly used to create sturdy, durable items such as bags, slippers, and garments.
🧵 Other Forms of Felting
There are also variations and industrial methods of felting, including machine-made felt and pre-felted materials. These are often used in commercial or large-scale applications, as well as by artists looking for specific textures or effects.
Types of Wool For Felting
There are many different types of wool available for felting, and each one behaves slightly differently. While most wool will felt to some degree, some fibres felt more quickly, while others produce stronger or more textured results.
The best choice depends on what you’d like to make—soft, lightweight felt requires different fibres than firm, hardwearing pieces like bags or slippers.
Fine vs Coarse Wool
Wool is often described as fine, medium, or coarse, and this has a big impact on the final result.
- Fine wool (e.g. Merino) Produces smooth, soft felt that is ideal for garments and items worn against the skin
- Medium wool (e.g. Blue-faced Leicester) A good all-rounder that felts well while still maintaining strength
- Coarse wool (e.g. mountain or hill breeds) Slower to felt, but creates strong, durable felt suitable for rugs, bags, and slippers
Fibre Preparation (How the wool is processed)
Wool is available in different forms depending on how it has been prepared:
- Carded wool (including batts and rolags): Fibres are arranged in different directions, making them quick and easy to felt
- Wool Tops: Fibres are aligned in one direction, creating a smoother finish but requiring a little more effort to felt
👉 Different preparations don’t just look different—they also affect how quickly and smoothly the wool felts.
Fibre Forms (What you might buy)
Felting wool is commonly available in a range of forms:
- Fleece (raw or washed) Less processed and more variable, often requiring preparation before use
- Locks Individual curls of wool, often used for texture or decorative effects
- Batts Soft, fluffy sheets of carded wool—great for building up layers quickly
- Tops Smooth, combed wool—ideal for controlled layouts and fine finishes
- Prefelt Wool that has already been partially felted, useful as a base or for adding shapes
Blends and Other Fibres
While wool is the most common fibre for felting, other fibres can also be used.
- Animal fibres (such as alpaca or mohair) can felt, but often behave differently
- Plant and synthetic fibres do not felt on their own, but can be combined with wool for texture and design
👉 As a general rule, wool needs to be the main component for successful felting
If you’re unsure, starting with a soft, widely available wool like Merino is a great way to begin.
Tools You Need
One of the nicest things about felting is that you don’t need a lot of specialised equipment to get started. Many of the tools used for felting are simple and often already found at home.
🌊 Tools for Wet Felting
For wet felting, the basic tools are very minimal:
- Wool fibre
- Warm water
- Soap (such as dish soap or olive oil soap - each felter will have their favourite)
- A flat, waterproof working surface
- Bubble wrap or textured mats (to help create friction)
- A mat or towel to work on
Optional tools that can make the process easier include:
- Netting or mesh: to hold fibres in place while working
- Rolling tools: such as a pool noodle or dowel
- A ball brauser (sometimes called a sprinkler or felting sprayer): for even water distribution
🪡 Tools for Needle Felting
Needle felting requires a few more specialised tools:
- Felting needles
- Wool fibre
- A foam pad or felting pad (to protect your surface and needles)
Optional tools that can make the process easier include:
- Needle Holders: Provide stability and are available for single needles or multiple needles, allowing you to work more quickly
- Finger Guards: It’s quite common to accidentally stab your fingers when needle felting, and these can help reduce the risk
🪡 Understanding Felting Needles
Felting needles are specially designed with tiny barbs along the shaft. These barbs catch the fibres and push them into each other, causing them to tangle and felt together.
There are a few key things to know:
- Gauge (thickness): Higher numbers mean finer needles, which are used for detail and finishing. Lower numbers are thicker and used for shaping and faster felting
- Number of barbs: More barbs felt fibres more quickly. Fewer barbs allow for more control and finer work
-
Needle shapes: Different needle shapes are designed for different stages of felting:
- Triangular needles: A versatile, all-purpose needle—great for shaping and general felting
- Star needles: Felt more quickly due to additional edges, making them useful for faster work
- Twisted needles: Help create a smoother, more even finish
-
Reverse needles: Pull fibres outward instead of pushing them in, creating a fuzzy or textured surface
For beginners, starting with a medium needle (such as a 36 or 38 gauge) is usually a good place to begin.
⚠️ Safety Note
Felting needles are very sharp and can break if bent, so it’s important to use them carefully and work in a straight up-and-down motion.
It’s quite common to accidentally prick your fingers while needle felting. If this happens, clean the area and treat it as you would any small cut, particularly if you are working with raw or unwashed fibres.
Planning For Shrinkage
One of the most important things to understand when felting is that your work will shrink as the fibres lock together. This is a natural part of the felting process and is what gives felt its strength and density.
However, shrinkage is not always predictable. The amount of shrinkage can vary depending on the type of wool used, how the fibres are laid out, and how much heat, moisture, and agitation are applied during felting.
🧪 Why Sampling Matters
Because there are so many variables, making a small sample before starting a project can be incredibly helpful.
By felting a test piece, you can:
- see how the wool behaves
- estimate how much it will shrink
- understand the texture and thickness of the final felt
Even a simple sample can save time and materials, especially for larger projects.
📐 Understanding Shrinkage
Shrinkage is often measured as a percentage—comparing the original size of your work to the final felted size.
For example, a piece of wool that starts at 10 cm and shrinks to 7 cm has reduced in size by around 30%.
If you enjoy working with numbers, there are many ways to calculate shrinkage rates and plan your projects precisely. However, for beginners, a simple sample is often the easiest and most reliable way to understand how your materials will behave.
🌿 A Simple Approach for Beginners
If you’re just starting out, it’s best to allow extra size in your layout and adjust as you go. Felting can be a slightly unpredictable process, and part of the learning experience is seeing how different fibres and techniques affect the final result.
Keeping notes on your samples can be helpful, especially if you plan to repeat or refine a project in the future.
How Felting Works (A Simple Overview)
Felting is a hands-on process that gradually transforms loose fibres into fabric through layering, moisture, and movement.
In wet felting, wool fibres are first laid out in thin layers, often in different directions. This helps create an even and stable piece of felt.
Warm soapy water is then added, and the fibres are gently pressed and rubbed. This allows the fibres to become fully saturated and begin to settle together.
As the process continues, more movement and agitation are introduced—often through rubbing or rolling. This encourages the fibres to tangle and lock together, gradually forming a cohesive fabric.
Over time, the material becomes stronger, denser, and smaller as shrinkage occurs. The final result can be soft and flexible or firm and structured, depending on how much the fibres are worked.
Needle felting follows a similar principle, but instead of using water and movement, a barbed needle is used to repeatedly push the fibres into each other until they become compact and hold their shape.
The process can feel slow at first, but as the fibres begin to bond, the transformation becomes easier to see.
A Simple First Wet Felting Project
If you’d like to try felting for yourself, a small flat piece is a great place to start.
- Lay out a few thin layers of wool fibres, alternating the direction of each layer
- Gently cover the fibres with netting or mesh
- Sprinkle warm soapy water over the fibres until they are evenly wet
- Press down gently to remove air pockets and help the fibres settle
- Begin rubbing lightly in circular motions
- As the fibres start to hold together, increase the pressure and continue rubbing or rolling
- Continue until the fibres have bonded and form a cohesive piece
Your finished felt will shrink and become thicker as you work. Once complete, rinse and allow it to dry flat.
Don’t worry about getting it perfect—felting is a process of experimenting and learning as you go. If something doesn’t turn out as expected, you can always incorporate your piece into something else or repurpose it.
Adapting Felting to Suit Your Needs
Felting can be a very physical process, particularly when working with larger pieces or using traditional wet felting methods. However, there are many ways to adapt the process to better suit your energy levels, mobility, or comfort.
Some alternative approaches include:
- Using your feet to roll the felt This can reduce strain on your hands and arms, especially for longer rolling sessions
- Using temperature changes Alternating between very hot and very cold water can help encourage fibres to felt through temperature shock, reducing the amount of physical agitation needed
- Working with others Taking inspiration from traditional practices such as Scottish ‘waulking’, where fabric is rhythmically worked by a group, can make the process more manageable (and more enjoyable), particularly for larger pieces
- Using adapted tools or equipment Some makers experiment with tools such as electric sanders to create agitation. If exploring this approach, it’s important to research carefully and test on small samples first
Felting is a flexible and adaptable process, and there’s no single “right” way to do it. Finding an approach that works for your body and your energy can make the experience much more enjoyable and sustainable.
Felting doesn’t have to be rushed—working slowly and adapting the process can make it a more enjoyable and rewarding experience.
FAQs
🧶 What type of wool is best for felting?
Most wool will felt to some degree, but non-superwash wool is best for beginners. Softer wools like Merino felt quickly and smoothly, while coarser wools create stronger, more durable felt.
🧼 Why isn’t my wool felting?
This can happen if the wool is superwash (which has been treated to resist felting), or if there isn’t enough heat, moisture, or agitation. Adding more movement or slightly increasing the temperature can help.
📏 How much will my project shrink?
Shrinkage varies depending on the wool and the felting method, but it’s common for pieces to shrink by around 20–40%. Making a small sample is the best way to estimate shrinkage for your project.
🪡 What needle should I start with?
A medium needle (such as a 36 or 38 gauge) is a good starting point. Thicker needles are useful for shaping, while finer needles are better for detail and finishing.
🧵 Can I felt fibres other than wool?
Some animal fibres can felt, but plant and synthetic fibres do not felt on their own. They can, however, be combined with wool for decorative effects.
💧 How do I know when my felt is finished?
The fibres should feel firm and hold together as one piece. If you gently try to lift fibres from the surface and they don’t pull away easily, the felting process is likely complete.
🧤 Do I need special tools to get started?
Not necessarily. Many felting tools are simple household items, especially for wet felting. You can begin with just wool, water, soap, and a surface to work on.
⚠️ What if I make a mistake?
Felting is a very forgiving process. If something doesn’t turn out as expected, you can often reshape it, continue felting, or repurpose it into something new.
Key Felting Terms
You may have come across some of these terms while reading—here’s a quick reference.
You don’t need to remember all of these terms to get started, but they can be helpful as you begin exploring felting.
- Felting The process of matting fibres together to create a non-woven fabric
- Fulling Shrinking and thickening an already knitted or woven wool fabric
- Fibre The raw material (such as wool) used to create felt
- Batt A fluffy sheet of carded wool fibres
- Top (or roving) Wool fibres that have been combed so they lie in the same direction
- Prefelt Wool that has been partially felted and can be used as a base or for decoration
- Gauge (needle felting) Refers to the thickness of a felting needle—higher numbers mean finer needles
Extra Tips for Beginners
- Start small—simple projects are the best way to learn how wool behaves
- Work slowly and check your progress regularly
- Different wools and techniques will give different results—experiment and see what you enjoy
- Keep your hands relaxed, especially when needle felting
- Don’t worry about perfection—felting is a process of exploration
The more you experiment, the more you’ll start to understand how different fibres and techniques behave.