Boy's Surface

A 3-D rendering of Boy's surface. 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, which can also be removed in Sage using option "frame=False" as seen in Sage code below), 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 a