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BASIC SCIENCE AND TECH

PROCESSING OF RUBBER AND PLASTICS

A) Plastic Plastics are manufactured through the combination of several different compounds obtained chiefly from cellulose, coal and petroleum. There are numerous techniques or methods for producing plastic objects. Some ...
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PROCESSING OF CERAMICS

A) Methods of Making Clay In order to process ceramics, mud, or clay is obtained and cleared of all plant material, stones, paper, metal scraps, wooden pieces and other impurities ...
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PROCESSING OF METALS

Many metals do not naturally exist in a free state in the ground. They occur in association with other substances collectively referred to as impurities. The combination of these impurities ...
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COMMON TIMBER DEFECTS

A defect is anything present in wood, which results in the lowering of its quality or value. A defect can be caused by the action of man, insects, and fungi ...
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TIMBER GROWTH AND FELLING

Wood is obtained from trees. When it has not been processed for use, it is typically referred to as timber. Trees are renewable materials, although they grow very slowly, some ...
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WOOD PRESERVATION

Because the sapwood of trees contain water, food, salts, air and warmth, wood is often attacked by fungi, termites, insects and other pestiferous organisms. Since woods usually contain varying amounts ...
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BASIC ELECTRONIC DEVICES

Electronics is concerned with the theory design, and application of devices to control streams of electrons moving through solids, liquids, gases, and spaces, which are free of air (vacuums). Electronics ...
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SIMPLE METAL WORK PROJECTS

Metal Finishing  Metal finishing refers to any of the techniques used to create a decorative or protective surface on a metallic surface. Metals differ in their degree of luster. They ...
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CONCEPT OF TECHNOLOGY

The word technology refers to ways of making or doing things. It includes all the methods through which people use their inventions and discoveries to satisfy their needs and wants ...
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INTRODUCTION TO METALWORK MACHINES

Introduction Metalwork is the process of working with metals to create individual parts, assemblies or large-scale structures. Types and Functions of Metalwork Machines There are different types of metalwork machine, ...
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