They are a lot cheaper and more popular then metals. They are lightweight, more user friendly, self-coloured and self-finished.
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Thermoplastics
can be reheated and reshaped
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Thermosetplastics
plastics undergo a chemical reaction; stay permantly rigid and cannot be reheated, reshaped or reformed.
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Softwoods
come from coniferous trees which have needles rather then leaves. These trees grow faster and are usually softer to work with.
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Manufacturing boards
These are timber sheets which are made either gluing layers or wood fibres together.
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Ferrous metals
Mostlt consist of iorn and small qauntities of other elements and metals. They are prone to rusting if exposed to moisture and can be picked up by a magnet
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non-ferrous metals
Don't contain any iron at all. Therefore do not rust when exposed to moisture and are not attracted to a magnet, zinc, iron and tin
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Other cards in this set
Card 2
Front
can be reheated and reshaped
Back
Thermoplastics
Card 3
Front
plastics undergo a chemical reaction; stay permantly rigid and cannot be reheated, reshaped or reformed.
Back
Card 4
Front
come from coniferous trees which have needles rather then leaves. These trees grow faster and are usually softer to work with.
Back
Card 5
Front
These are timber sheets which are made either gluing layers or wood fibres together.
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