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How to make injection molding machine for plastics

Injection Molding . How to make an injection molding machine, recycle plastic.
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Secrets of Building a Plastic Injection Molding Machine
by Vincent Gingery. 127 pages. 5 1/2 x 8 1/2. black and white photos, illustrations.
Plastic Injection Molding book
Injection Molding is a process used commercially to make thousands of identical plastic parts, quickly and automatically, by using tons of hydraulic pressure to force molten plastic into a steel mold. Each mold might have several cavities in which the plastic parts are formed. A typical large volume automatic injection molding machine is bigger than a car, and uses molds costing upwards of $20,000 each! But now you can make your own usable machine.
The limitation? The size of the part: about 1/2 ounce of plastic. Plus it’s NOT automatic — you use your own muscles (and levers) to apply the force.
This book shows how to make an injection molding machine capable of turning scrap “milk bottle” plastic into usable small products such as plastic knobs. Sources are given for all uncommon parts. Includes information on how to make molds for your machine.