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.