10 Basic Sewing Terms You Should Know

If you’ve ever sat down with a needle, thread, and a pile of beautiful fabric—only to feel like everyone around you is speaking in code—you’re not alone. Sewing has its own language, and understanding the lingo is half the battle when starting out. At Pura Fabric, we know how overwhelming it can feel to dive into a new craft, especially when patterns and tutorials toss around terms like “bias grain” or “notions” without explanation.

That’s why we’ve put together this guide: to demystify the most essential sewing terms you’ll encounter, not just with textbook definitions, but with real context, practical insight, and a few hard-won tips from years of working with natural, eco-friendly textiles. Whether you’re making a simple tote bag or your first garment, knowing these terms will help you sew with confidence.

Seam Allowance

What It Is and Why It Matters

The seam allowance is the distance between your stitch line and the raw edge of the fabric. It’s not just leftover space—it’s a critical part of your construction. Most commercial patterns specify a standard 5/8-inch (1.6 cm) seam allowance, which gives enough room for durability and minor adjustments, especially in garments.

In real-world sewing, ignoring seam allowances can lead to pieces that don’t fit together, or worse—garments that are too tight after sewing. When working with natural fabrics like organic cotton or linen from Pura Fabric, keep in mind that these materials may behave differently than synthetics. Linen, for example, can fray more easily, so a precise seam allowance helps maintain clean edges.

Pro Tip: Always check your pattern’s recommended seam allowance before cutting. If you’re drafting your own design, mark the seam line directly on the fabric with a water-soluble pen or tailor’s chalk—don’t rely on your machine’s default guide.

Lining

More Than Just a Hidden Layer

A lining isn’t just an extra piece of fabric tucked inside—it’s a functional and aesthetic upgrade. In garments, linings provide structure, reduce cling (especially with lightweight fabrics), and protect delicate outer layers from body oils and sweat. For structured pieces like jackets or skirts, a lining gives a polished, professional finish.

When sewing with breathable, natural fabrics—say, a soft bamboo viscose from our collection—a lining made of cotton batiste or cupro can enhance comfort while preserving the eco-friendly ethos of your project.

Real-World Use: Consider a lined linen blazer. Without lining, the fabric might feel rough against the skin and wrinkle excessively. With a smooth lining, it drapes better, feels luxurious, and resists wear over time.

Common Challenge: Matching the care instructions of your outer fabric and lining is crucial. Don’t pair a dry-clean-only lining with a hand-wash-only silk blend unless you’re prepared for tricky maintenance.

Seam

The Backbone of Every Sewn Project

A seam is where two or more fabric pieces are joined by stitching. It sounds simple, but seams are the foundation of your entire project. The strength, flexibility, and appearance of your seams determine how your finished piece holds up over time.

Straight seams are the most common, but there are variations like French seams (ideal for sheer or unlined garments), flat-felled seams (great for denim or workwear), and bias-bound seams (used for delicate edges). When working with Pura Fabric’s GOTS-certified cottons or TENCEL™ blends, choosing the right seam type can enhance both durability and drape.

Practical Detail: Press your seams after sewing—don’t skip this step. A well-pressed seam lies flat, improves fit, and makes the next step (like topstitching or adding a lining) much easier.

Quilting

Stitching Layers with Purpose and Design

Quilting isn’t just about making cozy bed covers—it’s the process of stitching together three layers: a top fabric (or pieced design), batting (the insulating middle), and a backing. The stitching pattern itself can be functional, decorative, or both.

In modern sewing, quilting is used in everything from padded jackets to textured home decor. For example, a quilted throw made with Pura Fabric’s organic cotton canvas and recycled batting adds warmth without bulk, perfect for sustainable home styling.

Industry Insight: Professional quilters often baste layers together before sewing to prevent shifting. Safety pins or spray baste work well, but for delicate fabrics like bamboo silk, hand-basting is gentler and more precise.

Hem

Finishing with Flair

A hem is the folded edge of fabric that’s stitched down to prevent fraying and create a clean finish. Hems vary in width depending on the garment or item—pants might have a 1.5-inch double fold hem, while a lightweight blouse could use a narrow rolled hem.

When working with natural fibers, consider how the fabric behaves when folded. Linen, for instance, holds crisp folds well, making it ideal for tailored hems. On the other hand, drapey bamboo rayon may require a blind hem stitch to keep the edge neat without adding stiffness.

Pro Tip: Always pre-wash your fabric before hemming, especially with shrink-prone materials like cotton or hemp. Nothing’s more frustrating than a perfect hem that rides up after the first wash.

Selvedge

The Fabric’s Built-In Edge

The selvedge (or selvage) is the self-finished edge of fabric that runs parallel to the lengthwise grain. It’s tightly woven to prevent unraveling and often includes printed information like the designer, fabric name, or care instructions.

While it’s tempting to use the selvedge as a straight edge for cutting, it’s generally best to remove it before sewing. The selvedge is denser and less flexible than the rest of the fabric, which can cause puckering or distortion in your seams.

Real-World Application: When laying out a pattern piece, align it with the grainline—not the selvedge—unless the pattern specifically says otherwise. Misalignment can lead to twisted garments, even if everything else looks correct.

Bias Grain

Cutting Across the Lines for Better Drape

Cutting on the bias means slicing fabric at a 45-degree angle to the selvedge. This direction gives the fabric more stretch and fluidity, making it ideal for necklines, bias bindings, and flowing garments.

Bias-cut pieces are commonly used in lingerie, bias-cut dresses, and piping. When working with Pura Fabric’s soft TENCEL™ or organic cotton voile, bias strips can be used to finish curved edges smoothly without bulk.

Practical Challenge: Bias fabric stretches easily, so handle it gently during cutting and sewing. Use weights instead of pins when possible, and avoid pulling as you stitch.

Industry Standard: True bias is exactly 45 degrees. Use a bias tape maker or commercial bias tape for consistent results, or cut your own for custom colors and widths.

Notions

The Unsung Heroes of Sewing

Notions are all the small tools and accessories that make sewing possible—or at least much easier. This category includes zippers, buttons, thread, pins, needles, interfacing, and even specialty tools like loop turners or fabric markers.

When choosing notions, match them to your fabric type. For example, use silk thread for delicate fabrics and heavy-duty thread for canvas or denim. At Pura Fabric, we recommend eco-conscious notions like corozo buttons (made from plant seeds) or recycled zippers to keep your project sustainable from start to finish.

Lived Experience Tip: Keep a dedicated notions box organized by category. Nothing kills momentum like searching for a size 8 hand needle in a tangled mess of bobbins.

Seam Ripper

The Most Honest Tool in Your Kit

No matter your skill level, you’ll use a seam ripper. It’s not a sign of failure—it’s a sign you’re paying attention. This small, pointed tool cuts stitches cleanly without damaging the fabric, letting you correct mistakes or adjust fit.

When working with tightly woven fabrics like Pura Fabric’s organic denim, a sharp seam ripper is essential. A dull one can snag threads and create runs. Hold the fabric taut and slide the forked end under the stitch, then lift to cut.

Pro Advice: Use the ball end to gently pick out threads after cutting. And never leave it loose in your sewing basket—its sharp tip can damage fabric or injure fingers.

Back Stitch

Lock Your Stitches the Right Way

Back stitching is when you reverse your sewing machine for a few stitches at the beginning and end of a seam to lock the thread in place. Without it, seams can unravel with wear or washing.

While most modern machines have an automatic backstitch button, it’s important not to overdo it. Too many backstitches can create bulk, especially in lightweight fabrics like bamboo challis. In delicate projects, consider a small lock stitch or tying off threads by hand instead.

Industry Practice: In couture sewing, back stitching is often avoided altogether. Instead, tailors use a “dot of backstitch” (just one or two reverse stitches) or hand-knot the threads for a cleaner finish.

Final Thought

Sewing is as much about language as it is about thread and needle. The more familiar you become with these foundational terms, the more confidently you’ll approach patterns, tutorials, and your own creative ideas. At Pura Fabric, we believe that sustainable sewing starts with knowledge—knowing your materials, your tools, and the techniques that bring them together.

Now that you’re equipped with these essential terms, why not explore our curated collection of eco-friendly fabrics? From breathable organic cotton to silky bamboo blends, every yard is chosen with both the planet and the sewer in mind. Start your next project with clarity, care, and confidence—only at purafabric.com.