NABTEB 2024 Woodwork Obj & Essays Answers

NABTEB 2024 GENERAL WOOD WORK

WOODWORK OBJ
01-10: DCDBACBBCC
11-20: ACCDABADDC
21-30: BDCABBACBD
31-40: CACAABCDAC

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ANSWER FOUR(4) QUESTIONS ONLY

(1a)
Conversion of timber refers to the process of transforming logs into usable lumber or wood products, such as boards, planks, and beams.

(1b)
Diagram

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(2a)
The properties of timber refer to its characteristics that define its suitability and behavior for various applications. These properties include Strength, Density, Durability, Workability, Moisture Content, Color and Grain, and Fire Resistance

(2b)
Wood refers to the raw material in its natural state, including logs, branches, and other plant material while Timber refers to wood that has been processed and prepared for use in construction, furniture-making, or other applications. Timber is typically sawn, planed, and seasoned to enhance its properties and make it suitable for specific uses.
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(3a)
Hardened timber:
Timber that has been over-dried or exposed to high temperatures, causing it to become excessively hard and brittle. May lead to cracking and splitting.

Collapsed timber:
Timber that has been subjected to excessive moisture, causing the cells to collapse and the wood to shrink and distort. May lead to a significant loss of strength and structural integrity.

(3b)
Decay refers to the breakdown of wood tissue due to the action of fungi, bacteria, or insects. It can8 lead to, Rotting, Softening, Discoloration, Loss of strength and structural integrity
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(5)
(i) Backsaw: A general-purpose saw for precise cutting, ideal for joinery, cabinetry, and furniture-making.

(ii) Dovetail Saw: Designed for cutting dovetails and other fine woodworking tasks, perfect for achieving accurate cuts in hardwoods or dense materials.

(iii) Tenon Saw: Used for cutting tenons, mortise and tenon joints, and other precise cuts, its rigid blade and comfortable handle make it a favorite among woodworkers.
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