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Tensegrity Table

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Project by Michael O'Brien posted 10-11-2020 05:43 AM 2571 views 7 times favorited 18 comments Add to Favorites Watch

Fun little project! Nothing special about this one, except I decided to use a single piece of cord to join the top and bottom. Routing this through the base and top. This enables fine tuning of the table when under tension, and I think much simpler than trying to get four cords the same length. The cord is tied at two of the corners (the start and end), enabling each of the other corners to move independently. The cord is then covered by the base, and top shelf. The centre cord can be wound to increase tension. It’s surprisingly stable.

-- Michael, Melbourne Australia





18 comments so far

View Peteybadboy's profile

Peteybadboy

4151 posts in 3233 days


#1 posted 10-11-2020 09:33 AM

I have no idea how that works.

-- Petey

View Michael O'Brien's profile

Michael O'Brien

188 posts in 751 days


#2 posted 10-11-2020 10:05 AM



I have no idea how that works.

- Peteybadboy


Ha ha, neither did I!
Watch this:https://youtu.be/daXImz6DO9Q

-- Michael, Melbourne Australia

View mikeacg's profile

mikeacg

2049 posts in 2341 days


#3 posted 10-11-2020 10:22 AM

Michael,

Too cool! I have to try this one of these days…
Any idea on how much weight it will support?

Mike

-- Mike, A Yooper with a drawl, http://www.artcentergraphics.com

View Michael O'Brien's profile

Michael O'Brien

188 posts in 751 days


#4 posted 10-11-2020 10:36 AM



Michael,

Too cool! I have to try this one of these days…
Any idea on how much weight it will support?

Mike

- mikeacg

Hi Mike,
It’s quite amazing. The supportable weight would be a function of the breaking strain of the cord or cable, the strength of the joinery, and the balance of the stand. In my stand, I think balance would be the first thing to give way. A simple test and it held up my LN 4 1/2, no problem. Clearly way too top heavy for any real practical use – but a good test of its strength. This was just a prototype for me, the top and base are 5” x 5”, and I used 3/4” pine. The height of each of the long pieces is 12”. Overall height is just under 19”.

-- Michael, Melbourne Australia

View mikeacg's profile

mikeacg

2049 posts in 2341 days


#5 posted 10-11-2020 10:55 AM

Michael,
It is easier to understand your version with a cord on each corner for balance. The video showing a cord on only two corners is still a bit hard to wrap my mind around… I think I’ll make one for my store just to confuse my customers!
Mike

-- Mike, A Yooper with a drawl, http://www.artcentergraphics.com

View Michael O'Brien's profile

Michael O'Brien

188 posts in 751 days


#6 posted 10-11-2020 11:30 AM



Michael,
It is easier to understand your version with a cord on each corner for balance. The video showing a cord on only two corners is still a bit hard to wrap my mind around… I think I ll make one for my store just to confuse my customers!
Mike

- mikeacg


Have fun with that!

-- Michael, Melbourne Australia

View Dave Polaschek's profile

Dave Polaschek

8796 posts in 1865 days


#7 posted 10-11-2020 12:00 PM

I just showed this to my sweetie, telling her “I might just have to make one of these!”

Her reply? “Oh. My. God.”

Very nice work, Michael!

-- Dave - Santa Fe

View Michael O'Brien's profile

Michael O'Brien

188 posts in 751 days


#8 posted 10-11-2020 12:17 PM



I just showed this to my sweetie, telling her “I might just have to make one of these!”

Her reply? “Oh. My. God.”

Very nice work, Michael!

- Dave Polaschek


Thanks, have fun, they’re quite amazing…

-- Michael, Melbourne Australia

View Navaar's profile

Navaar

33 posts in 3017 days


#9 posted 10-11-2020 01:18 PM

Hi Michael, it’s nice to see another one on here. They are fun to build and make people scratch their heads.

View htl's profile

htl

5597 posts in 2443 days


#10 posted 10-11-2020 02:27 PM

Very interesting!!!
I had been thinking there would need to be a way to add tension as the rope stretched.

-- An Index Of My Model making Blogs https://www.lumberjocks.com/htl/blog/130264

View Ivan's profile

Ivan

17049 posts in 4151 days


#11 posted 10-11-2020 02:30 PM

Cool stuff!!

-- Ivan, Croatia, Wooddicted

View pottz's profile (online now)

pottz

21297 posts in 2268 days


#12 posted 10-11-2020 04:45 PM

real cool look,you should try something big like an end table.

-- working with my hands is a joy,it gives me a sense of fulfillment,somthing so many seek and so few find.-SAM MALOOF.

View Ron Stewart's profile

Ron Stewart

335 posts in 3787 days


#13 posted 10-11-2020 06:49 PM

Like the others said, that’s so cool. The rational part of my brain gets how it works, but the rest of me still says it’s sorcery. Great idea using a single cord.

-- Ron Stewart

View Michael O'Brien's profile

Michael O'Brien

188 posts in 751 days


#14 posted 10-11-2020 08:44 PM



Hi Michael, it’s nice to see another one on here. They are fun to build and make people scratch their heads.

- Navaar


Definitely need to do some stress testing. Any idea what I should use?
Your table looks great!

-- Michael, Melbourne Australia

View Michael O'Brien's profile

Michael O'Brien

188 posts in 751 days


#15 posted 10-11-2020 08:48 PM



Very interesting!!!
I had been thinking there would need to be a way to add tension as the rope stretched.

- htl


I’m pleased I didn’t need to adjust the four outside supports individually. I think that would be difficult. Adjusting the centre support, which creates the tension, is really much simpler that I’d imagined.
These things are great fun…

-- Michael, Melbourne Australia

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