This table evokes the warping effect on space and time exerted by a black hole. The table consists of black acrylic rings intersecting with a radial array of ribs that plunge downwards into a central hole, and an infinity mirror at the bottom gives the impression of an event horizon as the warping descends through the floor. A circular tempered glass top provides the functional table surface.
Second photo from BBC article "These are the discoveries that made Stephen Hawking famous" (Henning Dalhoff/Science Photo Library)
Third photo from NASA article "Black holes: Monsters in Space" (NASA/JPL-Caltech)
I used Fusion360 to draw a spline curve that matched the 1/r warping that occurs near massive objects in space, then incorporated a cutout for the infinity mirror, a base that splayed out for support, a profile that would be strong enough to hold the glass top, and a flat surface so it would be held securely. I used the Create > Revolve tool to generate a 3D shape. I saved that shape as an STL file then opened it in 123D Make. I used the "Radial Slices" construction technique to generate a frame that could be easily fabricated using a laser cutter. I custom designed the material as 1/4" acrylic, and went for 7 horizontal layers and 15 vertical ribs, because I felt that looked pleasing and would be structurally sturdy enough, and exported the print files.