Cast off by threading yarn through your loops, then pulling tight to find the edge
Casting off a knitting loom means binding off the loops so they do not unravel when you remove your work. The most common method is the basic bind-off: you thread your yarn through each loop on the loom in sequence, then pull the yarn tight to lock them in place. The result is a finished edge that looks similar to hand-knitted cast-off.
The exact steps depend on your loom type — a round loom works differently from a rectangular one — but the principle is the same. You are moving each loop over the one next to it, then removing it from the peg, until only one loop remains. That final loop gets pulled tight and secured.
Key Takeaways
- The basic bind-off works on any loom size: thread yarn through each loop, pull the previous loop over it, then remove that loop from the peg.
- Round looms require you to work in a circle, moving clockwise or counterclockwise depending on your preference and the loom design.
- Rectangular looms are cast off in rows, working across the width of the loom one row at a time.
- The final loop must be pulled tight and secured with a knot or by weaving the yarn tail back through the edge to prevent unraveling.
- Leaving a yarn tail of at least 6 inches gives you enough length to work with and weave in later.
How to cast off a round loom
Start by cutting your yarn, leaving a tail of at least 6 inches. Thread the yarn onto a tapestry needle or loom hook — most round looms come with a hook designed for this step. Insert the needle through the first loop on the loom, then pull the yarn through.
Move to the next peg clockwise (or counterclockwise, depending on which direction you prefer). Insert the needle through that loop, then pull the yarn through both loops at once. Now lift the first loop off its peg and over the second loop. The first peg is now empty. Move to the next peg and repeat: thread through the loop, pull the yarn through both the new loop and the loop still on the needle, then lift the old loop off and over the new one.
Continue around the entire loom until only one loop remains on a single peg. Pull the yarn tail through that final loop and pull tight. Weave the tail back through the cast-off edge using your tapestry needle, then trim any excess yarn.
How to cast off a rectangular loom
Rectangular looms have pegs arranged in two parallel rows. Cut your yarn and thread it onto a tapestry needle. Start at one end of the loom — usually the left side — and work across the width.
Insert the needle through the first loop on the top row, then through the first loop on the bottom row directly across from it. Pull the yarn through both loops. Now lift the top loop off its peg and over the bottom loop. Move to the next peg on the top row, thread through, and pull the yarn through both the new loop and the loop still on your needle. Lift the old loop off and over the new one. Continue this pattern across the entire width of the loom.
Once you reach the end of the top row, work back across the bottom row in the same way. When only one loop remains, pull the yarn tail through it, pull tight, and weave the tail back through the cast-off edge to find it.
The three-peg cast-off method
Some loom knitters prefer the three-peg method because it creates a slightly stretchier, more finished-looking edge. This method works on both round and rectangular looms, though it is more common on round ones.
Instead of working through every peg, you work through every third peg. Thread your yarn through the first peg, then skip two pegs and thread through the fourth. Pull the yarn through both loops, lift the first loop off and over the fourth, then move to the seventh peg. The wider spacing creates a looser bind-off that moves more easily, which is useful for projects like hats or cowls where the neckline needs to stretch.
The trade-off is that the edge is less dense and may look less polished. Use this method only if your pattern calls for it or if you are making something that needs extra give at the edge.
Securing the final loop so it does not unravel
The moment you pull that last loop off the loom, it can unravel if the yarn tail is not secured. The safest method is to pull the yarn tail through the final loop twice — once to close it, then again to lock it in place — before you weave the tail into the edge.
Thread your tapestry needle with the yarn tail and weave it back through at least three stitches of the cast-off edge, going in and out of the loops. This anchors the tail so it cannot pull free. You can also tie a small knot at the end of the tail before weaving, though this creates a small bump that may be visible on a fitted garment.
Once the tail is woven in, trim it close to the edge. If you leave too much tail, it can poke out; if you trim too close, the weaving may come loose. A quarter-inch tail is usually safe.
Common mistakes that cause loose or uneven cast-off edges
The most common error is pulling the yarn too tight as you work. This makes the cast-off edge stiff and difficult to stretch, and it can distort the shape of your finished piece. Pull the yarn snug enough that the loops do not slip, but not so tight that you have to strain to move to the next peg.
Another mistake is skipping pegs or working unevenly around the loom. If you rush and miss a peg, that section will have a loose loop that can ladder down and unravel. Count your pegs as you go, or mark your starting point with a stitch marker so you know when you have completed the circle.
Leaving too short a yarn tail is also a problem. If your tail is less than 4 inches, you may not have enough length to thread through the final loop and weave into the edge. Aim for at least 6 inches, and more if you are working with a very thick yarn or a large loom.
What to do if your cast-off edge is too loose
If you finish casting off and notice that the edge is loose or uneven, you have two options. The first is to carefully unravel the cast-off, pull the loops back onto the pegs, and try again. This works well if you caught the problem when ready and have not yet woven in the yarn tail.
The second option is to use a crochet hook to tighten the edge after the fact. Thread the hook through the loose loops and pull the yarn tighter, working from one end of the cast-off to the other. This is slower and less precise than redoing the cast-off, but it can save a project if the edge is only slightly loose.
If the edge is very loose or uneven, unraveling and recasting off is usually the better choice. It takes only a few minutes and produces a much cleaner result.
Frequently Asked Questions
Can I cast off a loom project the same way I would cast off hand knitting?
Not exactly. Hand knitting uses two needles and active stitches on both, while a loom has loops on pegs. The principle is the same — you are binding off loops so they do not unravel — but the mechanics are different. Loom cast-off is simpler because you work with one loop at a time instead of transferring stitches between needles.
What happens if I pull the yarn too tight while casting off?
A tight cast-off edge becomes stiff and loses its stretch. This is especially noticeable on projects like hats or sweaters where the edge needs to fit snugly around your head or body. If your edge is too tight, you can loosen it slightly by gently stretching it with your hands or by using a crochet hook to pull the loops a bit looser.
Do I have to weave in the yarn tail right after casting off?
No. You can weave in the tail when ready, or you can leave it for later. However, you must find the final loop before you remove the project from the loom, or it will unravel. Pull the yarn tail through the final loop at least twice and pull tight before you take the loom apart.
What if I do not have a tapestry needle?
A crochet hook works just as well for threading yarn through loops during cast-off. If you do not have either, you can use a bobby pin, a bent paperclip, or even a small safety pin in a pinch. The goal is straightforward to have something thin enough to thread through the loops and pull the yarn through.
Can I cast off a loom project while it is still on the loom?
Yes — in fact, you must. You cannot remove the project from the loom until the cast-off is complete and find. Once the final loop is pulled tight and the tail is woven in, then you can slide the finished piece off the pegs.