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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)

Step 1: Design

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.

<p>Just awesome..! However, not everyone has access to such a toolset. So for me it's impossible to fabricate.</p>
<p>That's actually super cool.</p>
<p>awesome ideas.. vote +1</p><p>look better than mine <a href="https://www.instructables.com/id/Lumen-Histoire-IoT-App/">https://www.instructables.com/id/Lumen-Histoire-IoT-App/</a></p>
<p>Such a trippy table. I love the diffused effect of LEDs shining on the rings, which will probably force a person to gravitate towards the table to see the source of the light, and see infinity instead. Really love the idea!c</p>
<p>Thanks. Yep, that's the idea! it works too, provided there are not a ton of other shiny things in the room...</p>
<p>THIS IS AWESOME</p>
<p>THIS IS AWESOME!!!</p>
<p>THIS IS AWESOME!!!</p>
<p>Very cool. When I first checked it i figured that the infinity mirror part was between the table top and the bottom. That would be interesting to do and not too tough to test. Remove your 1 way mirror from the top of the existing rig in the bottom and get some mirror tint film from a window tint place and use it on the bottom of your tabletop. That would be a different look for sure. Heck, try it with both the bottom and new top 1 way glass. That could get really freaky. If it's a horrible affect, it's very easy to bring back to it's current state by peeling off the tint. Great job. </p>
<p>actually, you already kind of see it. The glass acts as an extra reflective layer, so you get additional faint widely spaced rings. It isn't nearly as effective as having the mirrors close, because of how far apart the rings are - you lose most of the infinity impression as they're discontinuous</p>
<p>Awesome! I was adding the numbers up in my head, and wow, this is a <br>very expensive build, but definitely something you will be proud of for <br>many years. You do realize that there are plenty of makers who would be<br> willing to give you back money for all of the plans and files right? <br>Retail, you are looking in the neighborhood of around $525.00 in kit <br>form :) Thank you for sharing!</p>
<p>Thanks. Totally happy to give the plans away - hopefully it means more people will get to have one! Agreed it is not cheap.</p>
<p>Coole Idee!!!</p>
<p>so cool!!! I have a big tech build coming up next year for an exhibition. I would try to build something like this in the floor. would it have the same effect if I use black dense plywood to create the framework? You would be able to walk onto the black hole, the circle would have a 2 meter diameter. </p>
Don't see why not. It looks most dramatic from directly above. You would need a lot more LEDs and I imagine the glass would be $$$$, though.
<p>Had you considered making it out of clear perspex.</p><p>These would adsorb light and the ribs and rings would glow brighter at the bottom and less at the top.</p><p>The addition of some leds in the bottom ring would enhance this effect.</p><p>Something that you could play with.</p><p>I think this would increase the coolness to &quot;Infinity and Beyond&quot;. Sorry Geekness</p>
<p>I did, but I thought it would look less like a black hole and maybe a little too disco. Would be cool to see one though</p>
<p>If you add a motor to slowly pivot the LED plate you could get an interesting endless spiral effect.</p>
<p>You might enjoy my <a href="https://www.instructables.com/id/Warping-Infinity-Mirror/">https://www.instructables.com/id/Warping-Infinity-Mirror/</a>. Motorizing the acrylic mirror to tilt (or even warp) would be awesome</p>
<p>great idea</p>
<p>I wonder how a plasma ball or disc would look in the middle of that :)</p><p>Awesome build. Elegant and expertly done. </p>
<p>Great idea - I actually bought a plasma ball and tried it before settling on the infinity mirror. Unfortunately, you can't interact with the ball (it's under glass), it's not very visible except when dark, and the ball blocks much of the plunging effect. Maybe the plasma disc would work if you could solve the uninteractivity</p>
<p>Nice. It would be interesting to surface the framework and see it you can launch a coin to spiral into the abyss. Make a high tech wishing well/Christmas donation kettle, add soundfx for the echo drop.</p>
<p>At the Exploratorium next Pier over they have one like that with marbles, to mimic orbits (fast decaying ones, I guess). The sound effect is just a marble going clunk! though</p>
<p>ah, welcome to the makendo oracle, for a quarter coin it will flash and tell your fortune, for two coins it will tell you a good fortune...</p>
<p>now you're talking</p>
<p>nice job bro ! <br>it was so creative</p>
This is really cool. This blending of astronomy thoery and engineering has a very good taste. :) <br>keep it up.
<p>designed especially for usernames such as yours!</p>
<p>This is very cool, I love it.</p>
<p>thanks!</p>
Ahhhhhh I am blinded by the coolness of this table!
<p>thanks. all radiation emitted is non-blinding</p>

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Bio: Analog maker dabbling in digital manufacture
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