Knitting Cables Video Tutorial: How to Knit a C4B
If you’ve ever looked at a beautifully textured cable knit sweater or cozy blanket and wondered how those twisted, rope-like patterns come to life, you’re in exactly the right place. Cables are one of knitting’s most satisfying techniques — they look incredibly complex, but once you understand the mechanics, they’re surprisingly approachable. In this tutorial, we’re going to break down the C4B cable stitch step by step, walk you through what you’ll need to get started, explain how to read cable notation, and guide you through the process in a way that makes sense whether you’re a visual learner looking for video guidance or someone who likes written instructions to follow alongside.
Let’s dive in.
What Is a C4B Cable?
Before we get to the how, let’s talk about the what. C4B stands for Cable 4 Back. The “4” tells you how many stitches are involved in the cable cross, and the “B” tells you which direction the cable will twist — back, meaning the cable leans to the right.
In a C4B, you’ll be working with four stitches total. You slip two of those stitches onto a cable needle and hold them at the back of your work while you knit the next two stitches from the left needle. Then you knit the two stitches that were waiting on the cable needle. That crossing action is what creates the twisted rope effect.
The opposite of C4B is C4F (Cable 4 Front), where the cable needle is held to the front and the twist leans to the left. Together, these two cables are the building blocks of dozens of classic cable patterns.
What You’ll Need
To knit a C4B, gather the following supplies before you begin:
Yarn. A smooth, light-colored yarn in a worsted or aran weight is ideal for learning cables. Smooth yarn helps you see the stitch definition clearly, and lighter colors make it much easier to spot mistakes. Avoid highly textured or fuzzy yarns while you’re still learning — they make it harder to see what you’re doing.
Knitting Needles. Use needles that match your yarn’s recommended gauge. For worsted weight yarn, that’s typically a US size 7 or 8 (4.5–5mm). Wooden or bamboo needles are great for beginners because stitches don’t slide off as easily.
A Cable Needle. This is a short, specialized needle — usually bent or U-shaped — used to hold stitches temporarily while you cross the cable. If you don’t have one handy, a double-pointed needle of a similar size works perfectly.
A Tapestry Needle. Useful for weaving in ends once you’re done with your swatch or project.
Scissors. For cutting your yarn when you finish.
That’s really all you need. Cables don’t require any special tools beyond that cable needle, which makes them one of the more accessible advanced techniques in knitting.
Understanding Cable Notation
Cable patterns can look intimidating on paper, but once you understand the shorthand, it becomes second nature. Here’s a quick breakdown of how cable notation generally works:
The letter “C” stands for cable. The number after it tells you how many total stitches are involved in the cross. The letter at the end — B (back) or F (front) — tells you which way the cable needle is held, which determines the direction of the twist.
So C4B means: cable cross over 4 stitches, with the cable needle held to the back, creating a right-leaning twist.
Some patterns break this down even more explicitly. You might see it written as “slip 2 sts to cable needle, hold to back, k2, k2 from cable needle.” That’s the same thing — just written out in plain language rather than abbreviated notation.
You’ll also encounter cables like C6B (6 stitches, holds back, right twist), C8F (8 stitches, held front, left twist), and so on. Once you understand C4B, all of these variations follow the exact same logic — you just adjust the number of stitches accordingly.
How to Knit a C4B: Step-by-Step Written Instructions
Now let’s get into the actual technique. For this tutorial, we’ll work a simple practice swatch so you can see the cable taking shape. Cast on 14 stitches. This gives you 5 stitches on each side for a reverse stockinette border (which makes cables pop beautifully) and 4 stitches in the center for your cable.
Setting Up Your Swatch
Row 1 (Wrong Side): Knit 5, purl 4, knit 5.
Row 2 (Right Side): Purl 5, knit 4, purl 5.
Rows 3 through 6: Repeat Rows 1 and 2 twice more (working straight without a cable cross).
These rows build the foundation and let you see the plain column of stitches before the cable twist happens.
Working the C4B on Row 7
This is where the magic happens. When you reach your right side row and it’s time to cross the cable, here’s exactly what to do:
Step 1 — Purl across the first 5 stitches as established. These are your border stitches. Set them aside to the right needle as normal.
Step 2 — Take your cable needle. Insert it into the next 2 stitches on your left needle as if to purl and slip them off the left needle onto the cable needle. Don’t knit them yet — just move them.
Step 3 — Hold the cable needle to the back of your work. This is the key step that defines C4B. The cable needle hangs at the back, between you and your knitting.
Step 4 — Knit the next 2 stitches from your left needle as normal. At this point, those two stitches on the cable needle are just waiting patiently at the back.
Step 5 — Now bring the cable needle to the front (or just angle it so you can work the stitches) and knit the 2 stitches from the cable needle. You can either slide them back onto your left needle first and then knit them, or knit directly from the cable needle — whichever feels more comfortable.
Step 6 — Finish the row by purling the remaining 5 border stitches.
That’s it. That’s your C4B. You’ve just created a right-leaning cable cross.
Continuing the Pattern
After your cable row, continue working straight for 5 more rows (alternating your wrong side row and right side row as established), then work another C4B on the next right side cable row. In most patterns, you’ll repeat the cable cross every 6th, 8th, or 10th row depending on the design.
As you continue, you’ll watch the cable begin to spiral in that beautiful twisted rope pattern. Each cross builds on the last, and the texture becomes more defined with every repeat.
Common Mistakes and How to Fix Them
Even experienced knitters run into trouble with cables from time to time. Here are the most common issues beginners encounter and how to troubleshoot them.
Twisted Stitches After the Cross
If your stitches look twisted or crossed in an unintended way after you complete a cable, the most likely culprit is that you’ve knitted into the back loop of a stitch instead of the front. Make sure when you knit the stitches from the cable needle, you’re entering each stitch from the front as normal.
Dropped Stitches from the Cable Needle
This is probably the single most common cable frustration. If your stitches keep sliding off the cable needle while you hold it in back, try a bent or U-shaped cable needle rather than a straight one — they’re designed to hold stitches in place. You can also try holding the cable needle a bit closer to your work rather than letting it dangle too far away.
The Cable Is Twisting the Wrong Way
If your cable is twisting to the left when you expected a right-leaning twist, double-check that you’re holding the cable needle to the back. C4B = back = right twist. If you accidentally held it to the front, you worked a C4F instead. Both are beautiful — but they’re different, so keep track.
Tension Issues
The stitches immediately before and after a cable cross can sometimes look a bit loose compared to the rest of the fabric. This happens because the crossing action slightly stretches the surrounding stitches. To minimize this, try pulling your yarn a little more firmly when you work the first stitch after completing the cross. With practice and blocking (a process where you wet your finished knitting and gently reshape it), tension irregularities tend to smooth out significantly.
Losing Your Place in the Pattern
Cables involve alternating between plain rows and cable-cross rows, which means it’s easy to forget which row you’re on. Use a row counter or simply place a locking stitch marker on the right side of your fabric so you always know which side you’re looking at. Many knitters also use sticky notes to track which row of their pattern they’re working.
Tips for Getting Comfortable with Cables
Learning cables is one of those skills where the first few attempts can feel a little awkward, but it clicks surprisingly quickly. Here are a few things that help speed up that learning curve.
Practice on a dedicated swatch. Don’t learn cables on a real project. Give yourself a low-stakes swatch where you can make mistakes, pull back, and try again without worrying about ruining something you care about.
Work with a yarn you can see clearly. Light grey, cream, or any light solid color in a smooth worsted weight will show you the cable structure beautifully.
Go slowly on the cable row. There’s no rush. Slip those stitches, hold that needle to the back, and take each step deliberately. Speed comes naturally with repetition.
Watch your tension around the cable cross. Many beginners work the cable stitches too loosely or too tightly. Aim for the same even tension you use across the rest of your knitting.
Watch the video tutorial multiple times. Cables are one of those techniques where watching hands in motion is incredibly helpful. If you’ve found a video walkthrough for C4B, don’t try to follow along in real time on your first viewing. Watch it all the way through once to understand the full sequence, and then watch again more slowly as you actually knit.
Using C4B in Real Projects
Once you’re comfortable with the basic C4B, you’ll start noticing it everywhere. It’s one of the most foundational cable stitches in knitting and shows up in a huge variety of patterns.
Classic cable scarves and cowls often use a simple alternating C4B and C4F to create that familiar rope cable. Aran sweaters feature C4B panels worked alongside other cables, moss stitch, and honeycomb patterns. Cable beanies and hats frequently feature C4B as a repeating motif around the entire circumference. Blankets and throws sometimes use wide C4B panels separated by reverse stockinette for a cozy, textural effect.
As you grow your cable vocabulary, you’ll find that almost every cable stitch is a variation on this same basic concept. More stitches, different combinations of front and back holds, and creative arrangements of cable crosses on different rows — but the fundamental mechanism of slip, hold, knit, knit from needle remains the same.
How to Read a Cable Chart
Many knitting patterns present cables in chart form rather than (or in addition to) written instructions. A cable chart is a grid where each square represents one stitch and each row represents one row of knitting. Cable crosses are shown with special symbols that indicate which direction the cable needle is held and how many stitches are involved.
For a C4B, the chart symbol typically looks like two lines crossing from left to right over a 4-stitch width, with an arrow or indicator showing the needle goes to the back. Every pattern includes a legend or key that explains what each symbol means, so always check the key before reading the chart.
Reading charts from right to left on right-side rows and left to right on wrong-side rows (for flat knitting) is standard practice. Once you understand that rhythm, charts can actually be easier to follow than written instructions because you can see the visual shape of the cable building stitch by stitch.
Blocking Your Cable Swatch
Once you’ve finished practicing, take a moment to block your swatch. Wet blocking — soaking the piece in cool water for about 15–20 minutes, gently squeezing out excess moisture in a towel, and then laying it flat to dry — will transform your cable. The stitches even out, the twist becomes more defined, and the fabric opens up beautifully.
Cable knitting does compress the fabric horizontally because of all those crossed stitches, and blocking helps relax the fibers into their final shape. If you’re making a garment or any fitted project with cables, always block your gauge swatch before calculating how many stitches to cast on, since the finished dimensions after blocking can differ noticeably from your unblocked knitting.
A Note on Watching the Video Tutorial
If you’re using this written guide alongside a C4B video tutorial, here’s the most effective way to combine both resources. Start by reading through the written instructions once from beginning to end so you have a mental map of the process. Then watch the video in full without knitting along, just to see the movements and get a feel for the rhythm. Finally, start your swatch and use both the video (pausing and rewinding as needed) and this written guide together as you work.
Video is especially helpful for seeing exactly how the cable needle is positioned at the back of the work, how the stitches are slipped, and how the yarn tension looks during and after the cross. Written instructions are helpful for referring back to quickly when you’re mid-row and can’t easily rewind.
Using both together is genuinely the fastest way to learn any new knitting technique, and cables are no exception.
Final Thoughts
The C4B cable stitch is a gateway. Once you’ve worked that first cable cross and watched two columns of stitches spiral over each other, a whole world of textured knitting opens up. From simple rope cables to elaborate Aran patterns, from minimalist modern knitwear to traditional Celtic designs, cables are one of the most expressive tools a knitter has.
It’s worth repeating one more time: cables look far harder than they are. The moment they click — and they will click — you’ll wonder what you were ever intimidated by. Grab your yarn, your needles, your cable needle, and your practice swatch, and give it a go. Rewind the video as many times as you need. Pull back and try again as often as it takes. Every experienced cable knitter started exactly where you are right now.
Happy knitting.
