Polymers: Shape & Form

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Shape & Form

There are many different methods of shaping and forming polymers. This variety reflects the range of products that can be made from polymers.

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  • Cutting can be done through two main methods:
    • Hand cutting.
    • Machine-based cutting.
  • Hand cutting uses a coping saw.
    • Coping saws are used to cut curved and straight lines.
  • Hand cutting can be more difficult than machine-based cutting.
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  • Sanding can come in two forms:
    • Paper form.
    • Machine form.
  • You can use sandpaper or a sanding block.
  • To sand something you rub a gritty abrasive paper on the surface of the material.
    • Sanding reduces the surface's dimensions.
    • Sanding enhances the surface's finish, getting it smooth.
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Wet and dry paper

  • Polymers can be sanded with sandpaper.
    • To get a smooth finish, wet and dry paper is used.
  • Wet and dry paper has smaller grit particles.
    • This gives the polymer a better finish.
  • Wet and dry paper is used dry and then wet with water to smooth the surface.
  • A file can be used to remove teeth marks on the edges of polymers.
    • Teeth marks are created by the saw blades.
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Sanding polymers

  • Prepare the polymer.
    • Ensure that the surface is clean and free from dirt.
  • Ensure you work evenly and in a circular or linear motion.
    • A rotary or belt sander can be used to speed this process up.
  • It is important to use an extractor fan or a dust mask.
    • This prevents you from inhaling dust particles.

Jump to other topics

1Core Technical Principles

2Paper & Board: Specialist Technical Principles

3Timber: Specialist Technical Principles

4Metal: Specialist Technical Principles

5Polymers: Specialist Technical Principles

6Textiles: Specialist Technical Principles

7Designing & Making Principles

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