Materials Revision. Metals, Plastics, and Woods This powerpoint runs through materials and their properties, fixing methods (temporary and permanent), and finishing techniques. Categories of metals. Metals can be broken down into two main categories: . Ferrous Metals. contain iron
Metals, Plastics, and Woods
This powerpoint runs through materials and their properties, fixing methods (temporary and permanent), and finishing techniques
Categories of metals
Metals can be broken down into two main categories:
Categories of metals
Materials can be joined temporarily or permanently. Three methods of joining metals are shown below.
Nut, bolt &
Working with metals – finishing techniques
Several surface finishing techniques can be used on metals. The most common ones are detailed below:
Categories of plastics
Plastics can be broken down into two categories:
thermoplastics and thermosets.
Uses of plastics (thermoplastics)
Plastics have an extremely wide range of uses. Here are some common products made from thermoplastics.
Uses of plastics (thermosets)
Thermosets have different qualities to thermoplastics. Here are some uses for thermosets.
Working with plastics – other processes
Plastics can also be worked in other ways.
Materials can be joined temporarily or permanently. Three methods of joining plastic are shown below.
Nut, bolt and
Working with plastics – finishing techniques
Plastics have excellent surface qualities. As they are self-finishing, plastics require little or no surface finish. However, when designers want a specific colour or texture, spray paints can be used.
Categories of timbers
Timbers can be broken down into three categories:
A closer look at hardwoods
A closer look at softwoods
A closer look at manufactured boards
Working with timber – other processes
Timber can also be worked in other ways.
Materials can be joined temporarily or permanently. Two methods of joining timbers are shown below.
Can you think of any other methods?
Working with timber – finishing techniques
Timbers can be treated with several surface finishes. They have different purposes and are chosen depending on where the product is going to be used and what type of visual appearance is desired: