Assembling my 3D printed Alien film inspired mechanical iris prop along with weathering. The link to my version of the stl files is at Printables at https://www.printables.com/model/8593... and the original from sketchpunk is here : https://www.thingiverse.com/thing:773759

In the movie, they used hvac iris dampers but I lack cheap and easy access to them for my prop building.

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