Chisels (Junior Cert Wood Technology): Revision Notes

Chisels

Chisels are crucial in woodworking, used to cut and craft wood. They enable woodworkers to create intricate designs and firm joints, vital for both hobbyists and experts.

Definitions

• Chisel: A tool with a sharpened edge for cutting hard materials like wood.
• Bevel Edge Chisel: A chisel with an angled edge for precise work and detailed joints.
• Mortise Chisel: A robust chisel for cutting mortises, forming strong joinery.

Description of Chisels

• Chisels include a handle, a blade, and an edge.
• Used for cutting and crafting wood.
• Essential for creating precise designs and strong joints.

Diagram

Types of Chisels

• Bevel Edge Chisel: Ideal for delicate tasks like dovetail joints. The angled edge aids in reducing friction and fits sharp corners, but it isn't suited for heavy tasks.
• Mortise Chisel: Designed for heavy-duty cuts, it withstands mallet impacts and is best for deep cuts.

Type of Chisel	Features	Uses
Bevel Edge Chisel	Reduces friction, sharp angles	Fine woodworking, dovetails
Mortise Chisel	Strong, heavy	Cutting mortises

Maintenance and Sharpening

• Maintenance:
  • Regularly clean with a soft cloth and store in a dry location.
  • Ensure sharpness and secure handles to prevent accidents.
• Sharpening:
  • Utilise honing stones or jigs.
  • Sharpening steps:
    1. Secure the chisel.
    2. Hold the blade correctly.
    3. Move the blade on a honing stone.

Diagram

Safety Practices

• Wear goggles and gloves for safety.
• Keep hands behind the blade when using.
• Firmly secure the workpiece.
• Stay focused to avoid accidents.
• Avoid damaged chisels.