Lesson Notes By Weeks and Term v3 - Senior Secondary 3
wood carving and sculpture
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wood carving and sculpture
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Subject: Wood-Work
Class: Senior Secondary 3
Term: 2nd Term
Week: 8
Theme: Decorative Woodwork
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Name wood and to ols suitable for carving & sculpture. Produce carves objects and sculpture
Mallets: Used to strike the handle of chisels and gouges, providing power for deeper cuts. Wooden or plastic mallets are preferred over metal hammers to prevent damage to tool handles.
4. Rasps and Files: Abrasive tools used for shaping, smoothing curves, and removing wood rapidly. Rasps have coarser teeth, while files have finer teeth for smoother finishes.
Rifflers: Small, curved files designed to reach into concave areas and intricate details.
5. Clamps and Vices: Used to secure the workpiece firmly to a workbench, ensuring safety and stability during carving.
6. Sharpening Stones/Strops: Essential for maintaining the razor-sharp edge of all carving tools. Dull tools are dangerous and lead to poor results.
7. Safety Equipment: Gloves (cut-resistant), safety glasses, dust masks. 2.3.
2. Basic Carving Techniques (Conceptual):
1. Layout and Design Transfer: Sketching the design onto the wood block, or using templates.
2. Roughing Out: Using larger gouges and mallets to remove significant waste material and establish the general form. This is the initial "blocking out" phase.
3. Shaping and Refining: Progressively using smaller gouges and chisels to refine the shape, smooth curves, and develop details. This involves careful, controlled cuts.
4. Detailing: Employing carving knives, V-parting tools, and small chisels to add fine textures, lines, and intricate features.
5. Surface Preparation: Using rasps, files, and progressively finer sandpaper (from coarse to very fine) to smooth the surface, remove tool marks, and prepare for finishing.
6. Finishing: Applying protective and enhancing coatings such as wood oils, waxes, varnishes, or stains to highlight the grain, protect the wood, and achieve the desired aesthetic. 2.
4. Safety Precautions in Wood Carving Always use sharp tools; dull tools require more force and are more likely to slip. Always cut away from the body. Keep both hands behind the cutting edge of the tool. Ensure the workpiece is securely clamped or held in a vice. Wear appropriate Personal Protective Equipment (PPE): safety glasses, cut-resistant gloves, and a dust mask when sanding. Keep the workspace clean and free of obstructions. Store tools safely in a designated rack or box when not in use. 2.
1. Definition of Wood Carving and Sculpture Wood Carving: This is a subtractive art form where a block of wood is shaped using cutting tools (chisels, gouges, knives) to create either a relief (where the design projects from a background) or a three-dimensional form. It involves removing material to reveal the desired shape.
Wood Sculpture: A broader term, wood sculpture can encompass wood carving but also includes techniques like assembling multiple pieces of wood or combining wood with other materials to create a three-dimensional artistic form. For the purpose of this lesson, wood sculpture primarily refers to the creation of three-dimensional forms through carving. 2.
2. Suitable Timbers for Carving and Sculpture The choice of wood is paramount to the success and durability of a carved piece. Important characteristics to consider include workability, grain, stability, and durability. 2.2.
1. Characteristics of Suitable Timber:
1. Even Grain (Fine and Uniform Texture): Woods with an even, tight grain are easier to carve smoothly without splintering, allowing for intricate detail.
2. Moderate Hardness: Timbers that are neither too hard (difficult to cut) nor too soft (prone to crushing or vague detail) are ideal. Medium-density woods offer a good balance.
3. Stability: The wood should be well-seasoned (dried) to prevent excessive shrinking, swelling, warping, or cracking after carving.
4. Durability and Resistance to Pests: The timber should be resistant to insect attack (e.g., termites, wood borers) and fungal decay, especially for pieces intended for long-term display or outdoor use.
5. Availability: Easily accessible and sustainably sourced timbers within the local Nigerian context are practical choices.
6. Colour and Finish: The natural colour and how the wood takes a finish (oil, wax, stain) can significantly impact the final aesthetic of the sculpture. 2.2.
2. Examples of Suitable Nigerian Timbers: Obeche (Triplochiton scleroxylon): Soft to medium-hard, pale in colour, with a straight, open grain. It is very easy to carve, making it excellent for beginners and large, rough forms. It takes finishes well.
Iroko (Milicia excelsa): Medium-hard, durable, with a somewhat coarse but interlocked grain. It is moderately easy to carve and highly resistant to decay and insects, often used for outdoor sculptures and durable traditional pieces like drums or stools.
Mahogany (Khaya species): Medium-hard, reddish-brown, with a fine, even grain. It carves beautifully, holds detail well, and has good stability. Widely used for furniture and decorative carvings.
Mansonia (Mansonia altissima): Medium-hard, dark brown, with a fine and somewhat interlocked grain. It carves well and is durable.
Ebony (Diospyros species): Very hard, dense, and typically black or very dark. It is challenging to carve but capable of holding extremely fine detail and a high polish, suitable for small, intricate, and precious carvings.
Teak (Tectona grandis): Medium-hard, yellowish-brown, oily, and highly durable. Excellent for outdoor applications but can be slightly challenging to carve due to its oily nature and hardness. 2.
3. Tools for Carving and Sculpture Proper selection and maintenance of tools are critical for effective wood carving. 2.3.
1. Essential Hand Tools:
1. Carving Knives: Used for fine detail work, trimming, and small cuts. Available in various blade shapes (e.g., straight, bent, spoon).
2. Chisels (Various Types): Gouges: Curved blades used for creating concave shapes, scooping, and removing larger amounts of wood. They come in different sweeps (degree of curvature) and widths (e.g., U-shaped, V-shaped, spoon gouges).
Straight Chisels: Flat blades used for straight cuts, flattening surfaces, and defining edges.
Skew Chisels: Straight chisels with the cutting edge angled, useful for undercutting and working into corners.
V-parting Tools: V-shaped blades used for outlining, creating sharp lines, and detailing.
3. Mallets: Used to strike the handle of chisels and gouges, providing power for deeper cuts. Wooden or plastic mallets are preferred over metal hammers to prevent damage to tool handles.
4. Rasps and Files: Abrasive tools used for shaping, smoothing curves, and removing wood rapidly. Rasps have coarser teeth, while files have finer teeth for smoother finishes. * Rifflers: Small, curved files designed to reach into concave areas and intricate details.
5. Clamps and Vices: Used to secure the workpiece firmly to a workbench, ensuring safety and stability during carving. 6. 3.
1. Teacher Activities Introduction (10 minutes): Introduce the topic "Wood Carving and Sculpture," briefly discussing its historical and cultural significance in Nigeria. Display samples of carved objects (real or pictures) from different Nigerian cultures and modern interpretations. State the learning objectives for the lesson.
Concept Explanation (20 minutes): Explain the definitions of wood carving and sculpture. Present and discuss various types of timber suitable for carving, highlighting their characteristics (e.g., Obeche, Iroko, Mahogany). If possible, bring actual samples for students to feel and observe grain patterns. Introduce and demonstrate the proper identification and safe handling of various carving tools (e.g., chisels, gouges, knives, mallets, rasps, clamps). Emphasize the importance of sharp tools. Demonstrate basic tool sharpening techniques on a sharpening stone (if feasible, otherwise explain the process). Briefly explain basic carving techniques (roughing out, shaping, detailing, finishing) using a small block of wood for illustration. Emphasize safety precautions in detail. Practical Demonstration & Guidance (30 minutes): Demonstrate a simple carving task, such as creating a basic relief pattern (e.g., a simple geometric design or leaf pattern) on a small block of Obeche wood, illustrating roughing out, shaping, and preliminary detailing. Circulate among students, observing their handling of tools and offering individual guidance and corrections.
Activity Supervision (40 minutes): Supervise students as they engage in the practical activity. Provide one-on-one assistance to students struggling with tool control or technique. Monitor adherence to safety rules strictly.
Review and Conclusion (10 minutes): Facilitate a brief class discussion on challenges faced and lessons learned during the practical session.
Reiterate key concepts: suitable woods, essential tools, and safety. Assign independent practice questions. 3.
2. Student Activities Observation and Engagement (10 minutes): Observe teacher's introduction and display of carved objects. Actively participate in discussions, ask clarifying questions about the historical and cultural aspects of carving.
Concept Assimilation (20 minutes): Examine samples of suitable timbers, noting their characteristics. Identify and name various carving tools as presented by the teacher. Pay close attention to demonstrations of tool handling, sharpening, and basic carving cuts. Engage in a Q&A session regarding tools, timber characteristics, and safety precautions.
Practical Application (70 minutes): Prepare their individual workspace, ensuring it is clean and organized. Secure a small block of soft wood (e.g., Obeche) to the workbench using a clamp or vice. Using provided basic carving tools (e.g., a carving knife, a small gouge), attempt to create a simple relief pattern or a basic geometric shape as demonstrated by the teacher. Practice proper tool handling and cutting techniques under teacher supervision. Strictly adhere to all safety guidelines. Clean their tools and workspace after the practical session. Reflection and Independent Practice (10 minutes): Share their experiences and observations from the practical session. Attempt independent practice questions. The teacher should pose these questions after explaining the concepts and demonstrating tool use, allowing students to check their understanding.
Question 1: Name two timbers commonly found in Nigeria that are suitable for wood carving, and state one reason for their suitability.
Solution 1: Timber 1: Obeche Reason: It is relatively soft, has a straight grain, and is easy to carve, making it suitable for beginners and detailed work.
Timber 2: Iroko Reason: It is durable, resistant to insects and decay, and moderately easy to carve, making it good for long-lasting outdoor pieces.
Commentary: Emphasize that local availability and specific characteristics are key in selecting wood for carving projects.
Question 2: Identify two hand tools that are essential for a beginner wood carver, and describe their primary use.
Solution 2: Tool 1: Carving Knife Primary Use: Used for fine detailing, trimming, making small, precise cuts, and refining edges on a carving.
Tool 2: Gouge (e.g., U-gouge)
Primary Use: Used for scooping out wood, creating concave surfaces, and removing larger amounts of material efficiently to establish the general form.
Commentary: These two tools provide versatility for both bulk material removal and intricate detailing, fundamental for basic carving.
Question 3: Why is it crucial for carving tools to be kept sharp? State one reason related to safety and one related to efficiency.
Solution 3: Safety Reason: Sharp tools require less force to cut, reducing the likelihood of the tool slipping and causing injury to the carver.
Efficiency Reason: Sharp tools make clean, precise cuts, resulting in a smoother finish and less effort required, thus increasing productivity and quality of work.
Commentary: Reinforce that tool maintenance, especially sharpening, is a non-negotiable aspect of responsible wood carving.
Cultural Heritage and Tourism: Students can engage in creating or restoring traditional Nigerian wooden artifacts like masks (e.g., Gelede masks of the Yoruba, Igbo Ugonachomma masks), ancestral figures (ikenga of the Igbo), or traditional musical instruments (e.g., drums). These skills directly feed into the cultural tourism sector, providing income and preserving heritage. For instance, students can carve miniature versions of famous Nigerian sculptures to sell as souvenirs in tourist centres. Interior Decoration and Furniture Embellishment: The knowledge of wood carving can be applied to enhance modern interior spaces or furniture. Students can design and carve decorative panels for doors, wall hangings, lamp bases, or intricate details for chairs and tables, adding a unique, artisanal touch that appeals to local markets and export. For example, creating a carved wooden frame for a mirror or a decorative insert for a coffee table.
Entrepreneurship and Small Scale Industry: The skills acquired can lead to establishing small businesses in craft production. Carved items such as wooden bowls, kola nut containers, decorative figurines, or personalized wooden signs are in demand for gifts, home decor, and local events (e.g., traditional weddings, chieftaincy installations). This directly contributes to job creation and economic growth at the community level.