CastcraftInjection Molding

How to build small injection molding machines, and how to make relatively inexpensive molds for injection molding.

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Secrets of Building a Plastic Injection Molding Machine

injection molding bookinjection molding machine photoinjection molding machine drawing
Building an Injection Molding Machine by Gingery
(click on the machine photo or drawing for larger images)

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 a stand-alone injection molding machine capable of turning scrap “milk bottle” plastic into usable products such as plastic knobs. Sources are given for all uncommon parts. Includes information on how to make molds for your machine.

By Vincent Gingery. 127 pages. 5 1/2 x 8 1/2.

Building a Plastic Injection Molding Machine $16.00 +S&H

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Cutting Costs

in Short Run Plastics Injection Molding

epoxy injection molds
Use low cost aluminum or epoxy molds with an injection molding machine

An excellent companion for your own injection molding machine. "Cutting Costs" refers to using relatively inexpensive aluminum or epoxy molds for injection molding instead of much more expensive steel tooling.

Shows how to design inexpensive molds from aluminum and epoxy, with or without steel cores. Dozens of real-life mold designs are illustrated and described. Discusses various types of injection-moldable plastics and why a certain type is used to make a certain part.

Written by Pros in the injection molding business that have solved many types of mold making problems for unusual injection molded parts. A line of small injection molding machines (in the $15,000 - $20,000 range) is available from the company that produces this book.

By Morgan Industries. 112 pages. 8 1/2 x 11.

Short Run Plastics Injection Molding $38.95 +S&H

Order Policy:U.S. addresses only - Credit Cards and PayPal Accepted