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by thechao 1691 days ago
Right!? I just naturally assumed that everyone could picture & model 3d shapes in their visual space (like AR), until I was in college. I used to design machines & parts "in front of me" and then build them. I think it's one if the reasons I find CAD so difficult to use.

When I draw 3D shapes, I just "visualize" the shape on the surface and trace it.