Getting a knitwear piece right — both in texture and design — is never as simple as “pick a style and sew it up.” For independent designers and streetwear brands that care about their supply chain, understanding how a knitwear factory actually operates is the key to controlling quality and keeping costs in check.
Here’s the full custom production workflow — yarn counts, core knitting techniques, post-finishing processes — no fluff, just what you need.
1. Materials: 2/48Nm and Cotton-Cashmere Blends
Every sweater starts with the yarn. In custom orders, 2/48Nm shows up constantly.
What Is 2/48Nm?
Nm (Metric Count) measures yarn thickness. 2/48Nm means two strands of 48-count single yarn twisted together.
- Hand feel: A 2/48Nm sweater has a smooth, refined surface. It’s not bulky like a chunky knit, but it holds warmth well and drapes beautifully.
- Best for: Premium pullovers or lightweight base layers — whenever you’re after that polished, elevated look.
Cotton-Cashmere Blends
Cashmere is expensive and finicky to maintain. Pure cotton, on the other hand, can feel heavy and stiff. A cotton-cashmere blend (say, 85% cotton + 15% cashmere) splits the difference. You get the breathability and structure of cotton, plus the soft, downy hand of cashmere. For mid-to-high-end fall/winter pieces, this ratio is a safe bet.
2. The Factory Floor: Knitting Calculations, Programming, and Plating
- Knitting calculations (pattern drafting): Woven garments use paper patterns. Knitwear doesn’t — it’s all about loops. A skilled technician works from the design sketch and calculates the exact stitch and row count for the chest, armhole, and collar. Get this wrong, and the entire sizing goes sideways.
- Jacquard programming: Turning complex jacquard or cable patterns into code that computerized flat knitting machines can read.
- Plating: A yarn-feeding technique where one yarn covers another. The face and back of the fabric end up with different textures or colors. Great for dual-color effects or localized reinforcement — exactly the kind of detail streetwear brands obsess over.
3. Acid Wash, Distressing, and Other Finishes
Before the yarn touches the machine, a technical stage determines the fit and silhouette.
A flat-knit sweater doesn’t always deliver the streetwear look on its own. The post-finishing stage is where a brand’s identity really locks in.
Acid Wash and Vintage Fading
Acid washing knitwear is similar to denim washing — it requires meticulous control over temperature and chemicals.
- The problem: Wool and cotton yarns are more fragile than denim. You want that mottled, worn-in fade, but push the wash too long and you’ll end up with holes.
- Shrinkage: Any sweater that goes through aggressive washing will have a different shrinkage rate from an untreated one. A factory that knows its craft will run multiple test samples before bulk production to lock in the final measurements.
Holes and Destroyed Effects
Worn edges, collars, or cuffs come from manual yarn cutting or intentional needle-dropping on the machine. Yarn twist is critical here — too loose, and the entire garment can fall apart.
4. Advice for Brand Owners
Don’t just compare prices. When you send an inquiry to a factory, be crystal clear on these three things:
- Describe the texture you’re after. Tell them the yarn composition and hand feel. If you want that fine, refined touch of 2/48Nm, say so outright.
- Send a reference sample. Even a piece from another brand beats a PDF. A technician can read collar details and wash color off a physical sample in ways a flat design file never can.
- Budget time for trial and error. If your design involves plating or acid washing, the first sample will take longer. Leave room for sizing adjustments and dialing in the wash intensity.
From yarn to finished piece, this supply chain runs on precision. Speak the technical language and you’ll move faster with the factory — and your product will sit on a foundation that competitors will struggle to copy.