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Injection moulding is the most common process for mass producing plastic components. Most of the robot's plastic parts, are made in this way.
To injection mould a product, solid plastic granules are poured
into the hopper of an injection moulding machine. The granules are heated
so that they become soft and fuse together. A screw mechanism then forces
the soft plastic into a mould, where the plastic cools and hardens.
Now you have completed Lesson 1
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