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Guide to Utility Knife Blade Types

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Utility knives are indispensable tools used for various cutting tasks around the home, workplace, and job site. The removable blade is the heart of a utility knife, and there are many types available with different shapes, sizes, and edge designs. Choosing the right blade for your needs is crucial for safety and optimal performance.

In this guide, we will explore the most common utility knife blade types, their key features and cutting capabilities, and tips for selecting the ideal blade for different materials and tasks.

straight edge blade

Straight Edge Blade

  • Uniform straight cutting edge
  • Can cut through denser materials with appropriate safety precautions

Straight blades excel at general purpose slicing, cutting, and trimming tasks. Their simple design allows for effortless sharpening to maintain a razor-sharp edge. Straight blades cut cleanly through paper, cardstock, plastics, tapes, labels, and wrappings.


Serrated Edge Blade

  • Cut tough, fibrous materials that straight blades can’t handle.
  • Stay sharp longer when cutting abrasive materials.

Serrated blades are ideal for cutting tough, fibrous materials that straight blades can struggle with. Materials like rope, fabric, carpet, and linoleum flooring are no match for a sharp serrated edge.


Hook Blade

  • Allows for detailed cuts in soft materials without damaging the subsurface
  • Anchoring ability ensures clean and accurate cuts

Hook blades excel at making detailed cuts in soft materials without damaging the subsurface. They’re perfect for vinyl and fabric upholstery work, carpet and rug cutting, and crafting applications.


Scoring Blade

  • Creates a shallow groove for bending, folding, or snapping off pieces along the score line.

  • Narrow point prevents accidentally cutting all the way through material.

Scoring blades allow for precise, controlled weakening of the material surface. They’re perfect for scoring and snapping off gypsum drywall panels. Scoring blades also work for folding cardboard along scored lines to create crisp folds and creases without tearing.


Concave Blade

  • Allow for cuts on concave, curved, or irregular surfaces.
  • Convex blades match the shape of convex materials and projects.

Concave blades are useful when trimming wallpaper around corners or curved walls. Their shape also aids detailed crafting and art projects requiring curved cuts.


Double Edge Blade

  • Two sharp edges, extending the blade’s life and providing value.
  • Two edge types

Double edge utility blades have two usable sharp edges, one on each long side of the blade. When one edge dulls, the blade can be flipped for extended usage before needing replacement.

Specialty Shapes: Round, Notched, Tapered

Utility blades are also available in unique shapes tailored to specific cutting needs:

rounded blade
  • Round blades allow circular cuts for arts, crafts, and DIY projects.

notched blade
  • Notched blades grip and cut smooth materials like plastic and laminates.

tapered blade
  • Tapered blades provide angled slicing for denser rubber and foam cutting.

Choosing the Right Utility Knife Blade

With the wide variety of utility knife blades available, selecting the best option for your needs is important.

  • Consider the types of material you expect to cut. Serrated blades suit tough fabrics, while scoring blades are made for drywall, cardboard, etc.
  • Will you need long periods of cutting before sharpening? Go for serrated or double edge blades that stay sharper longer under heavy use.
  • For precision work, curved specialty blades like hook or concave match irregular shaped materials.
  • Double edge and heavy-duty blades are best for extended industrial use.
  • For general hobby and household tasks, a standard straight edge blade handles most routine jobs.

Take safety seriously by always cutting away from yourself and wearing cut-resistant gloves. Make clean precise cuts with a new, sharp blade installed in your utility knife. With this comprehensive guide’s tips, you can select, sharpen, and use utility knife blades for optimal effectiveness and safety.

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