How to block knitting - submerging a knit swatch in a water bath

How to Block Knitting

You may have noticed that most patterns tell you to “block your knitting” as the final step once you’ve woven in all your ends.

But what is blocking knitting anyway? And why is it so important?

Great news! We’re going to learn alllllll about the what, when, why, and how of blocking knits in today’s tutorial.

Ready to learn? Let’s go!

What is blocking knitting?

Blocking in knitting is a crucial last step in every single project. Actually, this goes for crochet too!

Blocking knit projects, at its most basic is the process of wetting your project and then letting it air dry in a particular shape. Wet yarn can be adjusted with some gentle smooshing and pinning into a particular shape or size.

With blocking you can get even stitches, smooth seams, and straight edges in any knit or crochet project!

How to block knitting - an unblocked swatch
Before Blocking!
How to block knitting - a blocked swatch
After Blocking!

When should I be blocking knitting?

The short answer is: every. single. time.

No matter how simple a project is, it will always look better after blocking. However, blocking is the most important for lace projects, cable stitch patterns, and swatches. In all three cases, the stitches need that blocking step to relax, open up, and be the most accurate version of themselves.

Steps for Blocking knitting

Blocking generally follows three simple steps:
1. Get your project wet by soaking, steaming, or spraying with a spray bottle.
2. Remove as much extra moisture as possible, typically with a towel.
3. Lay your project flat, matching the finished dimensions.
4. Let it air dry!

That’s it! Today we’ll walk you through how to wet block knitting by soaking in a basin with a wool wash, followed by pinning your project to dry on blocking mats.

I’ll also talk about different options for each of these steps later on in the post so stay tuned!


  • A finished project or swatch
  • A bowl
  • A towel
  • Pins (blocking combs or blocking pins)
  • Warm water
  • Blocking mats or another pinnable surface
  • Recommended but optional: Wool wash or gentle detergent (see note)

    NOTE: wool washes like Eucalan or Soak are great for conditioning animal fibers. Look for brands that are leave-in for extra softness. For other fiber types like acrylic or cotton you can skip the detergent or use a gentle dish soap or shampoo for cleaning.

How to Wet Block Knitting

This step-by-step tutorial will show you how to wet block knitting by soaking it in warm water with a wool wash. The project will then be arranged on a blocking mat and pinned into place to air dry.

How to block knitting - step one: fill a bowl with water

Step 1:

Grab a bowl, basin, or use a clean sink to soak your project.

Choose one that’s big enough for your project to be fully submerged with room to float freely.

Fill your container 2/3 full of warm (not hot!) water.

How to block knitting - step two: add wool wash to the water bath

Step 2:

Add wool wash, detergent, or shampoo to your water bath.

For animal fibers: use a wool wash or shampoo.

For plant or synthetic fibers: you can skip this step, or use a gentle dish soap or shampoo for cleaning.

How to block knitting - step three: swish the water/soap mixture together

Step 3:

Use your hand to gently swish the water and soap mixture to distribute the suds evenly.

How to block knitting - step four: submerge your project in the water
How to block knitting - step four: squeeze out the extra air

Step 4:
Time to add your project! Submerge your swatch or finished project and gently squeeze out any extra air trapped in the fibers. You want the fabric fully saturated.

Note: Make sure not to agitate or move the project around more than you have to. Your project might felt or stretch if it’s moved around too much!

How to block knitting - step five: remove the project
How to block knitting - step five: squeeze the extra water out of the project

Step 5:
Let the project or swatch rest for 15 minutes – 1 hour in the water. While you wait, grab your towel and lay it open on a flat surface.

Next, gently lift the project from the bath making sure to support it so that it’s weight doesn’t stretch the fibers. Gently squeeze the excess water out.

How to block knitting - step six: open the project after the bath
How to block knitting - step six: lay the project flat on a towel

Step 6:
Gently open the project and lay it flat on the towel. Make sure there are no wrinkles or folds!

How to block knitting - step seven: fold the towel over
How to block knitting - step seven: roll the towel and press on the project to remove extra moisture

Step 7:
Fold the towel over your project so that’s it’s fully covered. Roll the towel up and then gently press on the roll to absorb any extra moisture.

How to block knitting - step eight: using blocking combs to pin the project on blocking mats
Blocking Combs
How to block knitting - step eight: using blocking pins to pin the project on blocking mats
Blocking Pins

Step 8:
Place your project on blocking mats or another pinnable surface. Using blocking pins or blocking combs, pin your project to match the shape and dimensions noted in your pattern. This is a great time to check your knitting gauge!

Let your project air dry before unpinning. That’s it!

A selection of blocking tools for blocking knitting

About Blocking Tools

As we learn how to block knitting, we need to talk about the different accessories for blocking knits too! Let’s take a closer look at some of the specialty blocking tools available at most craft stores. While you can absolutely block projects with just a towel and some water, more tools will make the whole process faster and give you better results. Promise!

BeKnitting Blocking Comb for blocking knits

Blocking Combs

These handy tools have multiple pins embedded in an easy-to-grasp handle. This makes pinning long sections or corners fast and easy. Rather than wrestling with many individual pins you can simply push a blocking comb in to cover a whole area (and you know that section will be straight!).

BeKnitting T-Pin for blocking knits


These pins are easy to find in any craft store and you can buy them in bulk! Look for rust-free stainless steel and nice sharp points. You can insert these pins to pinpoint specific areas that need to be blocked (great for lace points along edges!). The “t” shaped head makes them easy to push in and pull out of the project.

BeKnitting U-Pin for blocking knits


These pins have two legs which means they can pin two points at once! The curved head makes it easy to push them in or pull them out of the fabric. This style splits the difference between single t-pins and blocking combs.

Pros & Cons of Different Blocking Methods

There are several different approaches to blocking knitting and crochet projects. The big differences are in how the pieces of knitting or crochet get wet. Not sure how to choose between blocking techniques? Let’s take a look at the pros and cons of each!

Wet Blocking Knitting

The technique in this tutorial shows how to wet block knitting. This means that the whole knitted or crocheted piece is soaked in a water bath.
Pros: your project is totally saturated which makes for more even, thorough blocking.
Cons: There’s a lot of moisture to remove and some thicker projects can take multiple days to air dry.
Best for: projects that need heavy duty blocking like lace, cables, or projects with super bulky yarns.

Spray Blocking Knitting

You can use a simple spray bottle filled with just warm water, or a mixture of water with a dash of wool wash added for blocking knitting! Lightly mist your project to start, then pin it to your flat surface. Next, thoroughly spray the entire project and let it air dry.
Pros: projects that use thin yarns will dry super fast with just a light spray block!
Cons: Spraying usually isn’t enough to fully saturate thick yarns or dense textures.
Best for: light and airy projects or knits that just need a light touch-up between wears.

Steam Blocking Knitting

If you’ve got a garmet steamer then you’ve got everything you need to block knitting! Gently pin your project in place. While steaming make sure to keep the steamer moving and at least 1″ from the surface so that you don’t over heat your yarns.
Pros: this is a quick way to add heat and water to set a pattern or shape in knitting. It also works well on both thick and thin yarns.
Cons: Can be more difficult to evenly block a whole piece. There’s a danger of over heating delicate yarns with the hot steam.
Best for: touching up projects between wears, or light projects with good airflow for maximum steam penetration.

Tips and Tricks for Blocking

  1. Don’t hang wet knits, ever! Gravity will pull the fabric and permanently stretch your project. Make sure to lay your projects and swatches flat to dry.
  2. Don’t iron your knitting! The extra heat is terrible for knit fibers. Skip the iron and stick with warm temperatures to set your knits.
  3. You can make small adjustments while you block for a better fit! While a project is still wet you can massage the fabric so that it’s slightly denser or gently stretch a project to get extra length or width. Gentle is the key word here!
  4. You can block pieces of your knitting before and after seaming! Pay attention when your pattern has specific blocking instructions. Sometimes it pays to block sleeves, pockets, or pannels of a project before seaming to get edges that match up perfectly.
  5. Blocking isn’t just for finishing! You can block a project after every couple of wears, or after you bring it out of storage between seasons.

Wrapping Up

Phew! That’s a lot of information about how to block knitting! Now that you know a bit more about how to block knitting I hope that it makes it easy to actually DO IT for every project. It’s so tempting to skip this step but it makes a huge difference in the finished project.

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