Hyperboloid of One Sheet

A 3-D rendering of a hyperboloid of one sheet ("basket" surface), part of my "Gallery of Quadric Surfaces." The design starts in Sage, export to X3D (resulting file included), then import X3D into Blender. In Blender, edit to remove artifacts Sage leaves behind, like a cube of lines around the figure, then "thicken" the surface so that Cura can recognize it as a solid object:

1. select Properties -> Modifiers (wrench icon) -> Add Modifier -> Solidify
2. set Thickness to 0.1 and click Apply