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📘 CHAPTER: MATERIALS & TOOLS IN LEATHER HANDLING

(NSQ Level 2 – Leather Work Training Manual)

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1.0 Introduction to Materials & Tools in Leather Handling

Leather work is a practical skill that depends heavily on the correct selection and use of materials and tools. At NSQ Level 2, trainees are expected to develop a strong foundation in identifying, selecting, and properly using basic leather materials and tools.

Understanding materials and tools is critical because:

• It determines the quality of finished products

• It improves efficiency and productivity

• It ensures safety in the workshop

• It reduces waste and cost

Leather handling involves cutting, shaping, joining, and finishing materials into useful products such as shoes, bags, belts, and accessories.

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2.0 Leather Materials

2.1 Definition of Leather

Leather is a durable material produced by tanning animal skins and hides to prevent decay and make them suitable for manufacturing.

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2.2 Types of Leather Materials

2.2.1 Full Grain Leather

• The highest quality leather

• Retains natural grain

• Strong and durable

• Used for premium shoes and bags

2.2.2 Top Grain Leather

• Slightly processed

• Smooth surface

• Flexible and attractive

2.2.3 Split Leather

• From lower layers of hide

• Less durable

• Used for suede products

2.2.4 Bonded Leather

• Made from leather scraps

• Mixed with adhesives

• Affordable but less durable

2.2.5 Synthetic Leather

• Artificial material (PU/PVC)

• Cost-effective

• Widely used in fashion

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2.3 Sources of Leather

• Cow hide (most common)

• Goat skin (soft and flexible)

• Sheep skin (lightweight)

• Pig skin (durable)

• Exotic skins (crocodile, snake)

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2.4 Components of Leather Products

• Upper leather

• Lining materials

• Insoles

• Outsoles

• Reinforcements

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2.5 Auxiliary Materials

2.5.1 Adhesives (Glue)

• Used for bonding leather parts

• Types: contact adhesive, rubber glue

2.5.2 Threads

• Nylon thread

• Polyester thread

• Waxed thread

2.5.3 Fasteners

• Zippers

• Buckles

• Rivets

• Snaps

2.5.4 Dyes and Finishes

• Coloring agents

• Polish

• Edge finishing solutions

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3.0 Leather Handling Techniques

3.1 Measuring and Marking

• Use measuring tape and ruler

• Mark patterns accurately

• Avoid material waste

3.2 Cutting Techniques

• Straight cutting

• Curved cutting

• Pattern cutting

3.3 Skiving

• Thinning leather edges

• Improves flexibility

3.4 Stitching

• Hand stitching

• Machine stitching

3.5 Edge Finishing

• Smoothing edges

• Applying polish

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4.0 Tools Used in Leather Work

4.1 Classification of Tools

4.1.1 Measuring Tools

• Measuring tape

• Ruler

• Compass

4.1.2 Cutting Tools

• Utility knife

• Leather cutting knife

• Scissors

4.1.3 Marking Tools

• Scratch awl

• Pencil

• Marker

4.1.4 Stitching Tools

• Needles

• Awl

• Thread

4.1.5 Punching Tools

• Hole punch

• Rotary punch

4.1.6 Finishing Tools

• Burnisher

• Edge slicker

• Polishing cloth

4.1.7 Assembling Tools

• Hammer (mallet)

• Lasting pliers

• Clamps

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4.2 Description of Major Tools

4.2.1 Cutting Knife

• Used for cutting leather pieces

• Must be sharp for clean cuts

4.2.2 Awl

• Used to create holes for stitching

4.2.3 Mallet

• Used for striking tools without damaging them

4.2.4 Punch

• Creates holes for rivets and stitching

4.2.5 Needles

• Used for hand stitching

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5.0 Tool Maintenance

Proper maintenance ensures durability and efficiency.

5.1 Maintenance Practices

• Clean tools after use

• Keep tools dry

• Sharpen cutting tools regularly

• Store tools properly

5.2 Consequences of Poor Maintenance

• Poor product quality

• Increased accidents

• Higher replacement cost

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6.0 Safety in Leather Handling

6.1 Safety Guidelines

• Use tools properly

• Wear protective equipment

• Avoid distractions

• Keep workspace organized

6.2 Common Hazards

• Cuts from sharp tools

• Chemical exposure

• Fire hazards from adhesives

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7.0 Selection of Materials and Tools

Factors to consider:

• Type of product

• Cost of materials

• Durability

• Availability

• Skill level

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8.0 Storage of Materials and Tools

8.1 Leather Storage

• Store in cool, dry place

• Avoid moisture

• Keep away from sunlight

8.2 Tool Storage

• Use toolboxes

• Arrange properly

• Keep out of reach of unauthorized users

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9.0 Common Mistakes in Leather Handling

• Poor measurement

• Wrong tool selection

• Improper cutting

• Weak stitching

• Lack of finishing

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10.0 Practical Exercises

Exercise 1

Identify 5 tools and explain their uses

Exercise 2

Cut leather into simple shapes

Exercise 3

Practice stitching techniques

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11.0 Summary

Materials and tools are the foundation of leather work. Proper knowledge and handling ensure quality production, safety, and efficiency.

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12.0 Instructor Notes

• Emphasize hands-on practice

• Demonstrate tool usage clearly

• Monitor student performance closely

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13.0 Assessment Questions

1. List types of leather materials

2. Explain the use of 5 leather tools

3. Describe safety precautions in leather handling

4. Identify common mistakes in leather work