How To Knit An Increase: A Masterclass In Shaping Fabric

Mastering how to knit an increase is essential for transforming flat, two-dimensional yarn into three-dimensional garments that conform to the human body. By strategically adding stitches while maintaining fabric tension and edge symmetry, crafters can control garment width, create waist shaping, and fashion complex curves for sleeves and shoulders.

Foundation Setup and Essential Toolkit Requirements

Every successful shaping project relies on proper preparation, precise material selection, and a strong understanding of fundamental knitting mechanics. Before adding new stitches to your work, gather the necessary equipment and verify your skill level to ensure consistent gauge throughout the garment.

• Essential Equipment and Materials:
  
  
  • A pair of straight or circular knitting needles appropriate for your yarn weight (typically US 6 to 9 / 4mm to 5.5mm for worsted weights).
  • A minimum of 20 yards of smooth, light-colored worsted-weight practice yarn to easily monitor stitch anatomy.
  • Locking stitch markers to track shaping intervals and rows.
  • A tapestry needle for weaving in tails and evaluating finished edges.
• Mandatory Prerequisite Knowledge:
  
  
  • Proficiency in working standard knit (K) and purl (P) stitches.
  • Clear understanding of how to read basic knitting charts and shorthand abbreviations (such as KFB, M1L, and M1R).
  • Familiarity with maintaining consistent hand tension across various stitch combinations.
• Time and Scope Benchmarks:
  
  
  • Estimated learning duration: 45 to 60 minutes for active practice.
  • Project scope: Creating a 4-inch by 6-inch swatching sample featuring four distinct increase techniques.

Step-by-Step Guide to Mastering Essential Knitting Increases

Different shaping methods alter the fabric's drape, visibility, and directional slant in distinct ways. The following procedures outline the industry-standard techniques utilized by professional knitters for seamless garment construction.

Step 1: Executing the Knit Front and Back (KFB) Increase

The KFB is a visible, textured increase that creates a small bar resembling a purl bump at the base of the new stitch. It is exceptionally durable and frequently used in sock cuffs, top-down raglan sweaters, and garter stitch borders.

1. Insert your right-hand needle into the front of the next stitch on the left-hand needle as if to knit.
2. Wrap the working yarn counterclockwise around the right needle and pull the loop through to the front, but do not slip the original stitch off the left-hand needle yet.
3. Reposition the right-hand needle to insert it into the back loop of that exact same stitch on the left needle.
4. Wrap the yarn again and pull a second loop through the back of the stitch.
5. Finally, slide the original stitch off the left-hand needle, leaving two new stitches on your right needle where there was previously only one.

Pro-Tip: Always insert your needle smoothly into the back loop during the second half of a KFB without stretching the yarn excessively, which prevents oversized, loose loops from forming along the fabric column.

Step 2: Creating the Invisible Make One Left (M1L) Increase

The M1L is a left-leaning, nearly invisible directional increase formed by lifting the strand of yarn between two stitches from front to back. This method is the gold standard for seamless sweater bodies, lace knitting, and garments requiring clean, unblemished lines.

1. Work your knitting until you reach the point where the increase is required.
2. Using the tip of your left-hand needle, reach from the front to the back and pick up the horizontal strand of yarn that lies between the stitch you just worked and the next stitch on the left needle.
3. Transfer this lifted strand onto your left-hand needle so that the front leg of the strand leans toward the right.
4. Insert your right-hand needle into the back of this newly placed loop from left to right.
5. Wrap your working yarn and knit through the back loop to complete the twist, which closes any potential hole in the fabric.

Step 3: Executing the Make One Right (M1R) Increase

Paired directly with the M1L, the M1R is a right-leaning increase that also uses the floating strand between stitches. Together, M1R and M1L create symmetrical shaping lines for V-necks, raglan seams, and center-out garments.

1. Stop at your designated increase point on the right-hand needle.
2. Use the tip of your left-hand needle to reach from the back to the front and lift the horizontal strand between the last worked stitch and the upcoming stitch.
3. Place this lifted strand onto the left-hand needle so that the front leg of the strand leans toward the left.
4. Insert your right-hand needle into the front of this loop from right to left.
5. Wrap the yarn and knit through the front loop to anchor the stitch securely while twisting the base closed.

Warning: Confusing the directional orientation of M1R and M1L will cause your shaping lines to tilt incorrectly, distorting the geometric alignment of your garment panels. Always verify that your lifted strand leans in the intended direction before working into it.

Step 4: Working the Lifted Increase (RLI and LLI)

Right Lifted Increases (RLI) and Left Lifted Increases (LLI) anchor directly into the stitch row below rather than the floating strand between stitches, making them sturdy choices for sturdy outerwear and tailored garments.

1. Locate the stitch in the row directly below the next stitch on your left needle.
2. Insert your right needle from front to back into the right side of this lower stitch and place it onto your left needle.
3. Knit this newly acquired loop through the front.
4. Knit the original stitch on your left needle normally to complete the RLI.
5. For an LLI, locate the stitch two rows down on the left side of the previously worked stitch, place it on the right needle, and knit it through the back loop.

Comparative Analysis of Popular Knitting Increase Methods

Selecting the correct increase method depends entirely on the aesthetic requirements of the pattern, fabric elasticity, and structural integrity needed for the garment area.

Troubleshooting Common Shaping Errors and Structural Flaws

Even experienced crafters occasionally encounter inconsistencies when executing increases. Recognizing the underlying cause of a structural flaw ensures quick remediation without requiring total project unravelling.

• Unwanted Holes Formed Between Stitches:
  
  
  • Root Cause: The horizontal floating strand was pulled too tightly or twisted in the wrong direction during an M1L or M1R execution, failing to close the gap.
  • Actionable Fix: Drop the flawed stitch down to the error row, use a crochet hook to properly twist the strand, and re-anchor it securely into the working row.
• Asymmetrical Shaping Lines on Garment Halves:
  
  
  • Root Cause: Accidentally substituting a left-leaning increase for a right-leaning increase, resulting in mismatched seam angles.
  • Actionable Fix: Use locking stitch markers at the base of every increase row to verify directional orientation immediately after working the row.
• Puckered or Tight Fabric Along the Shaping Edge:
  
  
  • Root Cause: Working the increase too tightly, causing the surrounding stitches to bunch up and restrict natural fabric drape.
  • Actionable Fix: Relax hand tension when wrapping the yarn around the needle during the second half of the increase sequence.

Frequently Asked Questions

What is the difference between M1L and M1R in knitting?

The primary difference lies in their structural slant and how the floating strand is picked up. M1L (Make One Left) uses a front-to-back pickup creating a left-leaning stitch, while M1R (Make One Right) uses a back-to-front pickup creating a right-leaning stitch. Using them as a pair ensures mirror-image symmetry.

How do I count my increase rows accurately?

The most reliable method is to insert a locking stitch marker directly into the specific row where the increases are worked. You can also track your progress by counting the horizontal "bumps" of a KFB or the paired V-columns of an M1 increase against your pattern row counter.

Can I substitute a KFB for an M1 in any pattern?

Yes, but with aesthetic consequences. Because KFB leaves a small, visible purl bump resembling a tiny bar, substituting it into a smooth stockinette garment will create an intentional textured line. M1 increases remain virtually invisible within stockinette fabric.

Why do my increase edges look messy or loose?

Loose edges usually stem from failing to anchor the working yarn firmly on the second movement of a KFB or picking up the wrong strand during an M1. Maintaining consistent yarn tension and ensuring the stitch base is properly twisted will resolve this issue.

Are lifted increases better than Make One increases?

Neither is universally better; they serve different purposes. Lifted increases (RLI and LLI) use the stitch from the row below, offering incredible strength for heavy garments, whereas M1 increases use the yarn between stitches for superior invisibility in lightweight fabrics.

Advance Your Knitting Craftsmanship Today

Mastering diverse increase techniques elevates your handmade garments from simple hobby projects to professionally tailored masterpieces with flawless structural lines. Explore our advanced pattern library to apply these newly acquired shaping skills to your next custom sweater design.