Model Knife

A craft knife is a handheld tool featuring a sharp, thin, and replaceable blade, typically housed in a plastic or metal body. It enables precise cutting of materials such as paper, cardboard, plastic, thin wood panels, silicone, seam tape, foam, and similar substances. Thanks to its sliding mechanism, the blade tip can be carefully extended and locked at the desired length. Craft knives are widely used in construction, hobbyist work, advertising, packaging, and interior design industries.

Features

• Sliding or auto-locking blade system.
• Replaceable blade tips (segmented or single-piece).
• Body options in plastic, metal, or aluminum.
• Different blade widths: 9 mm, 18 mm, and 25 mm are common.
• Ergonomic handle design, often covered with non-slip material.
• Some models include automatic blade retraction safety.
• Designs available for both right-handed and left-handed users.

Types of Craft Knives

Segmented (Breakable) Craft Knives

• The blade tip is segmented; when dulled, a fragment breaks off to reveal a fresh edge.
• Offers fast and cost-effective use.
• Most commonly available in 9 mm and 18 mm versions.

Fixed-Blade Craft Knives

• Single-piece blade construction.
• Used for thicker and more durable cuts.
• Preferred in heavy-duty applications.

Automatic Retracting Models

• The blade automatically retracts when released.
• Preferred for occupational safety reasons.
• Commonly used in warehouses, logistics, and packaging industries.

Applications

• Cutting cardboard, mat board, and plastic sheets.
• Advertising and model making.
• Opening packages and preparing parcels.
• Cutting wallpaper and floor coverings.
• Removing silicone and mastic.
• Detail cutting in furniture and interior design work.

Application Techniques

Usage Method

• Work on a stable and flat surface during use.
• Extend the blade only slightly to prevent loss of control.
• Maintain a consistent blade angle and apply controlled pressure during cutting.
• When segmented tips become dull, break them off at the correct angle and dispose of them safely.

Advantages

• Enables precise, fast, and clean cuts.
• Lightweight, portable, and practical.
• Economical due to replaceable tips and breakable segments.
• Wide range of applications; multiple tasks can be performed with a single tool.
• Some models feature locking and automatic safety mechanisms.

Limitations

• Improper use can result in cuts and injuries.
• In low-quality models, the blade may not remain securely fixed.
• Blade tips can break when used on excessively hard surfaces.
• Broken segments from segmented models may pose a risk if not discarded carefully.
• Inconsistent pressure can cause the cut line to deviate.