Plastic Injection Molding Machine
"Creating with plastic can be fun and can be a profitable hobby
as well. But most plastic components these days are created by huge, expensive
plastic injection molding machines. Molten plastic is forced under enormous
pressure into intricate molds. On the surface it appears to be a technology
well beyond the realm of the home shop. 
At last, here is the book that simplifies this technology making it possible for you to inexpensively injection mold small parts from common recycled plastic.
You get complete step-by-step instructions revealing the secrets of building a small inexpensive table-top injection molding machine capable of molding up to a half ounce of plastic. Although a half ounce may not appear to be much plastic, the truth is, that it is more than enough to produce many small useful items.
Best of all you'll be molding with plastic recycled from milk jugs, soda pop bottles, plastic oil cans, and more. Your raw materials are free and plentiful.
You
will learn the basic principles of injection molding and how to design and
make your own molds. You will start by making a simple mold to test the machine.
Then you will mold a plastic knob for the machine itself. Next, you'll progress
to a mold that creates a small plastic container with a snap lid.
Before long you will be creating new products of your own design. You will be able to cast replacements for broken or missing parts, or you can make copies of plastic components. The possibilities are endless. The moldings are incredibly professional in quality. Your friends will never understand how you were able to do it."
This is the usual top quality info that Gingery Publishing produces. You get detailed step-by-step how-to, great drawings, sources of supply and more. You'll build a small, simple machine that will get you going off on a new adventure. Once you have built your first molder and have learned to use it, you'll probably dream of building a larger one. (knowing you, probably the size of a house...)
This
machine molds thermoplastics, not thermosets. In other words this will NOT
mold phenolic (also known as Bakelite™). This is a machine that uses
plastics that can be remelted, and thus, recycled, such as old milk bottles.
Surprisingly, recycled 2 liter soda jugs produce very hard, durable moldings.
Polyethylene milk bottles produce a softer, waxier type of moldings. You'll
see once you get started.
You can machine precision metal molds if you have a machine shop, or you can produce simpler molds with castable epoxy (expensive) or, believe it or not, plaster of paris. Vince has done it.
Great book. Rare info. Looks like something to have fun with. Get a copy! 5 1/2 x 8 1/2 softcover 127 pages
No. 1441 ... $15.95
CONTENTS
how injection molding is done, a young industry, what
is plastic, identifying types of plastic, design considerations, materials
needed, material list, tools and construction methods, building the frame,
the injector assembly, the adjustable work table, the heater block assembly,
mounting the heater block and guide busing, installing the thermometer, installing
the cartridge heater, installing the thermostat, wiring the machine, injection
molds, mold construction, making the first mold, safety first, injecting plastic
into your first mold, troubleshooting your first project, a knob mold for
the adjustable table, the clamping fixture, and more...
Tools Needed
You'll need a drill press, a small lathe to bore the
cylinder, a .501 and .374 chucking reamer to finishing the cylinder. If you
don't have a lathe Vince suggests a method of using a drill press that might
work. You need a torch for brazing. Oxy-acetylene is suggested, but I've done
some sizeable brazing with Mapp gas. Other than that you'll need the usual
small tools like hacksaw, drills, taps, etc.
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