Precious plastic for bigger part

I’m curios if these system can fit to cast big part of plastic. I want to try to cast a modular furniture consists of plates or beams, maybe for a chair, rack, or table. if I use 60cm to 120cm. I tought about multiple point injection, but I don’t know the theory for plastic molding. Maybe dave or anybady can help me suggest a better system. Thank you.

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I believe the pressure that can be created with the injection machine won’t be sufficient to create large objects. And that isn’t even considering the fact that you’re going to need a lot more plastic, thus bigger tube, thus more force to create the same amount of pressure…

Using multiple injection machines at once is going to be tricky as well,I think, because you can’t really control the applied pressure on each injection point.