Mastering The SSK Stitch: The Comprehensive Guide To Left-Leaning Knitting Decreases
The SSK (Slip, Slip, Knit) is a foundational left-leaning decrease that reduces your stitch count by one while creating a subtle diagonal slant to the left. By reorienting two individual stitches knitwise before knitting them together through their back loops, this technique ensures the resulting decrease mirrors the right-leaning K2tog for balanced garment shaping and intricate lace architecture.
Essential Tools and Foundational Knitting Mechanics
Before executing the SSK, a knitter must understand the anatomy of a stitch. In standard Western knitting, the "leading leg" of the stitch sits on the front of the needle, while the "trailing leg" sits behind it. The SSK is specifically designed to manipulate this orientation to ensure the top stitch of the decrease lies flat without twisting. Preparation involves selecting the appropriate fiber and toolset to ensure the decrease is visible and tidy.
Required Materials and Prerequisite Knowledge
- Needle Selection: Smooth-surfaced needles (stainless steel or plated brass) are recommended for learning decreases as they allow for easier manipulation of tight stitches. Bamboo or wooden needles provide more grip, which is helpful if working with slippery fibers like silk or mohair.
- Yarn Choice: For practice, use a light-colored, multi-ply worsted weight wool. Dark colors or highly textured yarns (bouclé, mohair) obscure the stitch definition, making it difficult to verify if the decrease is leaning correctly.
- Fundamental Skills: Mastery of the knit stitch, the purl stitch, and the "knit two together" (K2tog) is essential. Understanding how a K2tog leans to the right provides the necessary context for why the SSK is required for symmetry.
- Estimated Duration: Learning the mechanic takes approximately 5–10 minutes, but mastering the tension to make it look identical in size to a K2tog can take several project-based applications.
Executing the Standard SSK Decrease Technique
The SSK is a three-part motion. The primary goal is to change the orientation of the stitches so that when they are worked together, they do not twist at the base. Twisting a decrease adds bulk and can cause the fabric to pucker, which is detrimental to the drape of a garment. Follow these steps for the standard Craft Yarn Council (CYC) approved method.
Step 1: Slipping the First Stitch Knitwise
With the yarn held in the back (as if to knit), insert the tip of the right-hand needle into the first stitch on the left-hand needle as if you were going to knit it. Instead of wrapping the yarn, simply slide the stitch off the left needle and onto the right needle.
Pro-Tip: Ensure you slip "knitwise." Slipping purlwise does not change the orientation of the stitch, which is the entire purpose of this step. Slipping knitwise turns the stitch so the leading leg is now at the back.
Step 2: Slipping the Second Stitch Knitwise
Repeat the exact same motion for the second stitch on the left-hand needle. Insert the right-hand needle knitwise into the next stitch and slide it onto the right-hand needle. You now have two "turned" stitches sitting on your right needle.
Warning: Do not slip both stitches at the same time. Slipping them individually is crucial for ensuring they are properly reoriented. Slipping two together knitwise will result in a different stitch structure that may not lean as cleanly.
Step 3: Repositioning the Stitches for Knitting
Insert the tip of the left-hand needle into the front of these two slipped stitches, moving from left to right. This action essentially places the left needle back into the stitches while they remain on the right needle, preparing them to be knit together through their back loops.
Step 4: Knitting Through the Back Loops
Wrap the working yarn around the right-hand needle (which is currently positioned behind the left-hand needle, inside the stitches). Pull the loop through both stitches and slide them off the left-hand needle. You have now successfully decreased two stitches into one.
Step 5: Tensioning the Decrease
After completing the stitch, give the working yarn a gentle tug. SSK stitches have a tendency to be slightly looser than K2tog stitches because of the way the yarn travels across the slipped stitches. Maintaining firm tension during Step 4 prevents the "loose ladder" effect often seen in raglan shaping.
KNIT | How to Slip Slip Knit (SSK) — Ashley Lillis
Comparative Analysis of Common Decrease Methods
Understanding the visual and structural differences between decreases allows a knitter to substitute techniques based on the desired aesthetic or the specific behavior of the yarn being used.
| Technique | Abbreviation | Lean Direction | Structural Result | Common Application |
|---|---|---|---|---|
| Knit 2 Together | K2tog | Right-leaning | Bottom stitch is hidden behind the top stitch. | Right side of necklines, toes of socks. |
| Slip, Slip, Knit | SSK | Left-leaning | Top stitch sits prominently leaning left. | Left side of necklines, lace motifs, raglan. |
| Slip 1, Knit 1, PSSO | SKP | Left-leaning | Similar to SSK but can be slightly bulkier. | Older patterns, vintage lace designs. |
| Improved SSK | iSSK | Left-leaning | Slipped 1st knitwise, 2nd purlwise; tighter finish. | High-definition smooth garments. |
| Knit 2 Together Through Back Loop | K2tog TBL | Left-leaning | Creates a twisted, highly textured decrease. | Decorative borders or specialized textures. |
Precision Troubleshooting and Quality Control
Even experienced knitters encounter issues with the SSK. Because it involves more manipulation than a K2tog, the risk of uneven stitches or "gapping" is higher. Use these diagnostic fixes to refine your technique.
Scenario: The "Dog-Ear" or Stretched Stitch Effect
- Root Cause: This occurs when the first slipped stitch is stretched out during the transfer process or when the left needle is inserted too forcefully. It creates a loop that is larger than the surrounding stitches.
- Actionable Fix: Use the "Improved SSK" variation. Slip the first stitch knitwise, but slip the second stitch purlwise. This keeps the second stitch seated firmly on the needle and prevents the extra slack from migrating into the first stitch. Additionally, try to work the stitch closer to the tips of the needles to avoid stretching the circumference of the loops.
Scenario: The Decrease Appears Twisted at the Base
- Root Cause: The stitches were slipped purlwise instead of knitwise, or they were knit through the front loops instead of the back loops after being slipped.
- Actionable Fix: Verify the stitch mount. After slipping knitwise, the right leg of the stitch should be at the back of the needle. If you see the legs crossing at the bottom of the stitch, you have twisted it. Ensure you are knitting through the back loops (TBL) to resolve the orientation.
Scenario: Asymmetry Between K2tog and SSK on Raglan Seams
- Root Cause: The SSK naturally uses more yarn than a K2tog due to the path of the working thread, making the SSK side of a sweater look wider or sloppier than the K2tog side.
- Actionable Fix: Work the SSK as usual, but on the subsequent row (usually a purl row), purl the SSK stitch through the back loop. This "untwists" or seats the stitch deeper into the fabric, tightening the appearance and making it a mirror image of the K2tog.
Frequently Asked Questions
Why do I have to slip the stitches knitwise for an SSK?
Slipping knitwise changes the orientation of the stitch on the needle, turning it so that the leading leg is at the back. When you subsequently knit these stitches together through the back loops, they lie flat and lean to the left. If you do not slip them knitwise, the stitches will twist, creating a bumpy texture rather than a smooth, diagonal line.
Is SSK the same as SKP (Slip 1, Knit 1, PSSO)?
While both result in a left-leaning decrease, they are not identical in execution or appearance. SKP involves slipping a stitch, knitting the next, and then passing the slipped stitch over. SKP can sometimes result in a slightly larger, more prominent stitch. Most modern designers prefer the SSK because it creates a flatter, more integrated look in the fabric.
How can I make my SSK look neater in lace patterns?
In lace, tension is paramount. To make an SSK neater, ensure that you are using the tips of your needles to manipulate the stitches rather than sliding them down the barrel. Furthermore, after slipping the two stitches, try knitting them through the back loops using only the very tip of the right needle to pull the yarn through, which minimizes the amount of yarn used and keeps the stitch compact.
Can I use SSK on a purl row?
The SSK is a knit-side decrease. If you need a left-leaning decrease on the purl side (usually to maintain a pattern on the "wrong side"), you would use a SSP (Slip, Slip, Purl). This involves slipping two stitches knitwise, returning them to the left needle, and purling them together through the back loops.
Does the fiber type affect how an SSK looks?
Yes, fiber memory plays a significant role. Highly elastic fibers like wool will "snap" into place, making the SSK look tidy after blocking. Inelastic fibers like cotton, linen, or silk are much less forgiving and will highlight any tension irregularities in your SSK. When working with plant fibers, extra care should be taken to keep the slipped stitches small.
Master Your Shaping Today
Perfecting the SSK is the gateway to professional-looking knitwear and sophisticated lace projects. Practice this decrease on a swatch alongside its counterpart, the K2tog, to develop the muscle memory required for seamless, symmetrical shaping in your next masterpiece.
