u/Desperate_Walk_1734

I am thinking of making one based on one I saw in Amazon. The right and left sides fold in and when they open, the shelves fall down and lock in place. I was thinking of filling the the inside frame with cardboard and a little bit of cement to give it weight. I’ll be uploading folders, any suggestions to improve the foldability. I have some hinted I already made, I might add it for the sides and the shelves. Anyone had any experience making foldable or collapsible furniture?