More details about the machine can also be found at www.injectionmolder.net
Step 1: Machine set up
Step 2: Insert the mold
Inexpensive homemade molds can be made using an epoxy or urethane resin. Or, by machining a desired cavity into an aluminum block using a benchtop CNC machine.
Step 3: Pour in some plastic pellets
Step 4: Pull down handle to inject plastic
The downward force on the handle causes the injection nozzle to press down tightly against the top of the mold, allowing the molten plastic to flow directly into the sprue hole.
The time it takes to pull down the handle will vary, depending on how much plastic you are injecting. A small part (1-2 grams) may only take about 2-3 seconds to inject (plus a few seconds holding time). A larger part (5-10 grams) may take 10-15 seconds or longer to inject (plus a few seconds holding time).