Shop irregular curves for drafting, design, technical drawing, pattern making, ship curves, French curves, and flexible curve applications. These precision curve tools help architects, engineers, designers, students, and drafting professionals create smooth non-circular curves, transitions, contours, and flowing line work.
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Plain Flexible Curves
Pacific Arc$6.70 - $14.30BulletsFeatures: Plain sizes: 12", 16", 18", 24", 30", 36Inking edge is compatible with any writing utensil.Completely straighten or bend into whatever shape needed.DescriptionFlexible Curves offer professionals the flexibility to create an infinite... -
Professional Flexible Curve
Pickett$6.95 - $12.25The Pickett Professional Flexible Curve is used to measure and draw irregular curves.Features: Create irregular curvesContains inking edge for easy markingGreen colorMade of durable plastic and easy to useMade in Japan -
Professional French Curves
Pacific Arc$2.60 - $9.20Made from pure clear acrylic to ensure their long life and their value. We proudly carry a full line of professional French/irregular curves, all of which are individually poly-wrapped.Features: Straight edgeAvailable in various sizesDurable acrylic... -
Truflex II Flexible Curves
Alvin Drafting$9.60 - $23.90This lightweight aluminum Flexible Curve Rule is easy to shape and holds any curve firmly for accurate drawings and is made from premium materials that won't warp over time for long-lasting reliability and use. Features: Available in lengths from 12"...
Types of Irregular Curves
Irregular curves are precision drafting instruments used to draw smooth non-circular curves, transitions, contours, and connecting lines that cannot be created with a compass or circle template alone. These tools are used in architecture, engineering, fashion design, pattern making, marine drafting, industrial design, technical illustration, and manual drafting workflows.
- French Curves: Create smooth irregular curves, flowing transitions, and connected line segments for drafting, design, and technical illustration
- Flexible Curves: Bend and shape the curve to match custom contours, arcs, patterns, and layout lines for repeatable drawing work
- Ship Curves: Draw long sweeping curves used in marine drafting, hull shapes, industrial design, architecture, and large-format layout work
- Fashion Design Curves: Create garment patterns, hip curves, armholes, necklines, seams, and other apparel design shapes
- Hip & Vary Form Curves: Support pattern making, graphic design, and drafting layouts that require long gradual curves and blended transitions
- Inking Edge Curves: Provide raised or beveled edges for cleaner technical pen work and reduced smudging during manual drafting
- Curve Sets: Combine multiple curve shapes and sizes for broader coverage across drafting, design, classroom, and professional applications
Why Irregular Curves Still Matter
Irregular curves remain important because many technical drawings require smooth curves that are not true circles or simple arcs. French curves, flexible curves, and ship curves help create clean transitions, organic contours, pattern shapes, and blended line work with more control than freehand drawing.
Professional curve tools are especially useful for manual drafting, technical illustration, classroom instruction, garment pattern work, concept sketching, field layouts, overlays, and presentation drawings where accuracy and smooth line quality matter.
Choosing the Right Irregular Curve
When selecting an irregular curve, consider whether you need fixed curve shapes, adjustable curves, or specialized layout curves. French curves are ideal for repeatable smooth transitions, flexible curves are best for custom contours and variable shapes, ship curves work well for long sweeping lines, and fashion design curves are designed for apparel and pattern drafting.
Complete Your Drafting Workspace
Pair irregular curves with related drafting instruments, templates, and drawing tools to create accurate curves, layouts, technical drawings, and design presentations.
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