UNIT 2

UNIT 2

1. MATERIALS & RAW MATERIALS

   • selecting materials
     • the type of material
     • function
     • durability
     • cost of material
     • the kinds of additional elements that need to be incluided
     • techniques
   • Raw materials
     • extracted directly from nature
   • Natural and processed materials
     • ARTIFICIAL
     • SINTETIC

2. TOOLS

   • MARKING
     • ASSEMBLY
     • MEASUREMENT
   • SUPPORT
   • CUTTIMG
   • IMPACT

3. WOOD

   • TYPES
     • RESINOUS
       • NON-RESINOUS
   • PROPERTIES
     • HARDNESS
     • THERMAL AND ELECTRICAL ISOLATON
     • DENSITY
     • FLEXIBILITY
     • HYGROSCOPICITY
     • SOUND CONDUCTIVITY
     • SPLITABILITY
     • TOUGHNESS
   • FORMS
     • NATURAL
     • PREFABRICATED
   • WORKING TOOLS
     • CUTTING
     • IMPACT
     • ASSEMBLY
     • HAVING AND DRILLING

4. PROPERTIES

   • MECHANICAL
     • HARDNESS
     • RESISTANCE
     • TOUGHNESS
     • ELASTICITY
     • PLASTICITY
     • BRITTLENESS
   • THERMAL
     • EXPANSION
     • CONDUCTIVITY
   • ENVIROMENTAL
     • TOXICITY
     • RECICLABILITY
     • BIODEGRADABILITY
     • HAZARD

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