Making a plastic injection moulder

I’ve wanted to build a plastic injection moulder for some time now, and I’ve slowly been working on some parts using my lathe. Specifically the heating chamber and the plunger. I was using the Gingery Plastic Injection Moulder as a source, but I’ve modified the idea a bit now. The Gingery book I bought was the one for modifying a drill press, and it turns out my drill press doesn’t have enough travel. So I have to make the frame/press also.

The simplest material for me to get hold of are square steel tubes, and I’m hoping that 25mmx25mm will be strong enough as a material. I’ll have two in parallel. The current idea looks something like the following, though I’m not quite sure on the measurements yet. Click on the image to see it.

Plastic injection moulder

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