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Shaping Materials - Coggle Diagram

- - - - Must have draft angle and round corners
        
        HIPS - thermoplastic
- - - - tubes / rods etc
  - - - ABS / Polyprop
  - - - used for bottles
        
        hollow form
      - expensive to set up but unit cost very low - mass production
      - Granules heated and melted
        
        Extruded into a 'parison'
        
        Parison is put into mould
        
        Air is blown and shape is formed
        
        Cools and hardens - bottle!
- - - - heats a single line on acrylic - softens and bends
- - - - easy / 3D shapes
        
        can only be done one at a time
        
        sprue pins
- - - - bag press
      - e.g Plywood
      - curved shapes