My wife saw this on a FB group and wants me to make this for her as she thinks it looks cool. I'm not sure why, but instinctively, I feel it wouldn't work. Can anyone tell me if I'm right and explain?
My wife saw this on a FB group and wants me to make this for her as she thinks it looks cool.
It would work, that’s not the problem
But it’s gonna be unstable and I wouldn’t put anything of value on it
Just build the thing, it’s not that hard to copy
Here's one that's pretty stable
https://www.etsy.com/listing/1469952705/gravity-table-tensegrity-table?click_key=06e565a4bed6590b6a2078f596a13fd605f0f3c2%3A1469952705&click_sum=21e749ff&ref=internal_similar_listing_bot-1&listing_id=1469952705&listing_slug=gravity-table-tensegrity-table
I may buy one of these as a coffee table.
That's a pretty good deal. I wonder if I can get two.
https://www.youtube.com/shorts/73xp6jTtPpY
same thing
The chains hold everything in tension. Center one where the L's meet bears all the weight and supports it vertically, and the corner chains keep the top piece from being able to tilt and then fall horizontally while its weight rests on the center chain. As Anon said it's a neat looking gimmick but I wouldn't put anything you cared about on top of it.
?si=gsAlSOFS22hNRXK
It works, but it would make a lousy table because it would wobble around and a slight bump could knock it over.
Center chain prevents the top half from going down, external chains prevents the corners of the top halves going up
What it misses for stability are some horizontal or diagonal chains, though
What if you made something completely unhinged along these lines?
(The gray cylinders are supposed to be chains)
More stable, but your problem would be the length/tension/elasticity of the chains. A chain that’s not under tension contributes nothing, so it gets wobbly when they’re imbalanced. If one of the chains stretches slightly, or the top material bends, it becomes unstable.
It’s hard to balance with just chains but if you use adjustable tensioner hook/screws and a really stiff top and bottom it could work. If you’re just going to put it in a corner with a plant on it don’t worry and make the simple design
>It’s hard to balance with just chains but if you use adjustable tensioner hook/screws and a really stiff top and bottom it could work.
It would be so difficult to tension all of the chains.
Most likely, all the tension would be on three or maybe four chains.
As soon as you go to tighten a loose one, you'd overdo it a bit, and release tension on one of the previously-tight ones.
It would be a never-ending whack-a-mole of making minute adjustments on the slightly loose chains.
>As soon as you go to tighten a loose one, you'd overdo it a bit, and release tension on one of the previously-tight ones.
heaven forbid anyone ever try to replace a spoke on a bike wheel. No wait, we do it all the time WHEN WE HAVE HALF A BRAIN.
>No wait, we do it all the time WHEN WE HAVE HALF A BRAIN.
That was such an unnecessarily aggressive and offensive way to respond to me.
You made me feel sad for a moment, and I don't appreciate that.
You're right I shouldn't have done that. My point still stands though
Did they not teach y’all statics or what
> It would be so difficult to tension all of the chains.
It’s not, but it’s difficult to get them to stay at the same tension. What you need is to make sure that the elasticity will not cause any of them to lose tension when you bump into it or put something heavy on it off center
> what kind of chain stretches under a mild load.
Every chain and everything that connects a chain to anything and the table top itself. It’s not about the load on the table, the chains have to keep the table from going sideways which requires way more load. If you cut them to the same length and use fixed length fasteners the table will fail. Your hook suggestion is good tho
> spoke on a bike wheel
Those have threads for precise tensioning and still the average person can’t do it right.
This anon knows stuff
You could store the energy in the flexible tabletop. All materials have flex, even steel plates.
Basically you'd calculate the pounds of force when you're wife's boyfriend fricks her on it, and how much allowable deflection is allowed, and then you'd tailor the elasticity so that you would have the right rigidity.
The issue is that it's just too much work for something that's not even that cool.
The cross brace ruins the illusion. When it's symmetrical it doesn't have the same illusion of imbalance, plus because it's so wide compared to high, the braces from the tabletop intersect (visually) the structure. If you look at OP you can see the background surrounding both islands of top half and bottom half, the only thing crossing is the wires.
There's lots of cool furniture where the structural support is part of the aesthetic, so it just seems like a dumb may-may for casuals.
what kind of chain stretches under a mild load. use pic related with chains and your fairy gadget will thrill every guy you know.
>unstable.
make some lateral chains from a flexible material to act as dissipators
solved
>something completely unhinged like this
I suppose that's literally "unhinged" in that it lacks hinges but all you've done here is take four of the OP image and butt them together.
>all that gobbledeasiatic in the url
PRUNE YOUR FRICKING URLS YOU QUADRUPLEBlack folk REEEEEEEEEEEEEEEEEEEEEEEEEEE
>https://www.etsy.com/listing/1469952705
Everything after this is leftover search engine kibble not relevant to the page you're trying to link. Pro tip: works the same for Ebay, Amazon, etc everything after the listing or item number is GARBAGE, don't include it in your fricking links.
https://books.google.com/books/about/Dude_You_re_a_gay.html?id=HB_jdT2ThsoC&printsec=frontcover&source=kp_read_button&hl=en&newbks=1&newbks_redir=0&gboemv=1&ovdme=1#v=onepage&q&f=false
It should be trippy to look at, cool
Horizontal disheveling is still a b***h here
Is it an abstract representation of her and the bull in the 69 position?
The real Achilles heel of all of them is using cheap, flimsy, ugly chain when you could use very fine stranded wire like stainless fishing leader that is virtually invisible and you can crank it up to hundreds of pounds of tension that would make the structure rigid as hell. You can get picrel up to 800-900lb test and it's less than 1/8" dia.
Also if you make the corner pieces the same length the only one that needs a tensioner is the middle one.
This anon gets it. If you're going to go to all the trouble, at least do it with high grade fishing line to preserve the illusion. Those chains are gauche.
This kinda thing is cool as a desk decoration like a newton's cradle. Otherwise impractical, unless you welded the chains.
You could have already had it done in time you took to ask dumb questions.
>inb4 it's moronic
It is, but you have to build it.
I would just cut and organize all the parts then make her wrench it together.
Why the frick are there so many morons on DIY that take obvious bait.
OP is a histrionic homosexual that needs a constant source of (you)s for validation. Stop replying to this c**t so he kills himself.
This is not bait. It's a question about the potential pitfalls of trying to make a tensegrity table. Yes, it could also be posted on PrepHole, but it's perfectly fine for PrepHole too. Go back to posting in the woodwork general if this triggers you so much.
Black person, this is the same homosexual that posted a thread about using a hammer-drill to put together an ikea table and then screenshotted his own post about not knowing what the torque ring is on a drill to make a whole thread about how stupid people on the board are.
You are one of the dumbfricks I was referring to.
>There is only one poster on PrepHole
Please link to the thread you are referring to you fricking schizo.
See
Scroll down and you will see where he admits in both threads that he is just a trolling homosexual. The only thing worse than moronic trolls are the morons that feed them.
This exact explanation has already been posted, but I'm posting it anyways.
The desk hangs from the center chain and the outer chains keep it from falling over.
They work, they just wiggle about and are useless as a table.
its more stable if the outer wires are angled in like a pyramid instead of straight up and down...as in the picture it has to be basically perfect to work
Buckminster Fuller created a new branch of mathematics, a new branch of architecture, and a new type of car just for girls to make shitty coffee tables.
Sounds good
>My wife saw a thing on <social media site> and wants to replicate it. I am having doubts.
No shit, it's because it's a stupid idea. Tension tables are a cute novelty until you put something of value on it and you bump it. Just go buy lumber and chain and call it a weekend project, and by the time you come back from the store she'll already be nose deep in her phone and forget about it until she moves on to the next thing.
Literally sounds just like my wife.
>until you put something of value on it and you bump it
imagine being so dumb and clumsy that you can't own anything but special heavy ballasted occasional tables because a) you can't be trusted to choose appropriately stable surfaces to place valuable/ fragile items on and b) can't avoid bumping into the furniture
>comparing traditional table design to Facebook meme table
All you have to do to untension one of those tables and make them fall over is twist it slightly. It's literally that easy.
>you can't be trusted to choose appropriately stable surfaces to place valuable/ fragile items on
So what, this is just going to be some gay art piece with no practical use? Waste of time.
>ThE OnLy pRaCtIcAl uSe fOr aN OcCaSiOnAl tAbLe iS To sErVe aS A ReStInG PlAcE FoR VaLuAbLe/fRaGiLe iTeMs!!
There's easier ways to impress women and morons for free that don't cost raw materials and time.
That picture will be you exactly when Great Uncle Jimbo puts his triple-layer dip tray on your shitty table and it collapses like tinfoil and spills everywhere.
Here's an easy tension-based project you can do at home. Make sure you show everyone on livestream.
Just make it a desk toy. No need to full size it.
a welder buddy of mine has made a few. they seem to hold up well. here's his first attempt
and here's the more finalized design
cool
I saw an experimental seismometer that had some PLC controlling the tension in each wire dynamically for science reasons or something. Expensive and weird and cool.
Here's mine in progress