I made this....  

dave and paul
would both likely say it would float.

I guess
the question would be "how does it sit ?" I would expect it to sag a bit in the seat (like an old man). . .?

A poor man's Joe Colombo...
A poor man's Joe Colombo tube chair?
Seriously, though Jeremiah, if your into this sort of thing, you should really check out Victor Papanek and James Hennessey's classic Nomadic Furniture (if you have not already done so). There is also a Nomadic Furniture 2, but the original is better imho.

That's funny and fun
and quite fantastic. I encourage your fascination with materials and
creativity, attention to cost details. Keep it up! You could take it a step
further with your welding skills and make a floating/poolside lounge.
In a wavy form with black noodles (pipe insulators?) and stainless fittings.
(I would buy it) black absorbs heat. In the cooler days of the NEast it would
feel great in a chilly pool.
Get Grainger and Mcmaster-carr catalogues. Cheaper hardware and the odd
fittings will inspire you. They have thick sheet rubber, stainless steel in all
forms and sizes, springs, strange clips and clamps. Foam rubber in all
densities.
Unfortunately it looks like a ten dollar chair because the noodles are so
recognizable as a cheap toy. But that is not important. You are thinking
and creating. Taking an idea and seeing it through, searching the hardware
store for solutions. Keep it up. Fun to see.

leaping off point
I think things like this are fun but should be used as a leaping off point - not an end. There is a lot of comfort and safety in using the classics - but that can also be a weakness. After a while it becomes "redoing" a classic in a new material - a schtick rather than an exploration.
What I presume you would hope for is your own distinct voice as an artist and so the classics can be a touch point for exploring materials - here hard/soft, frame/padding etc.
On the good end you've got folks like (totally forgetting his name - did the pop interpretation of the Wassily chair)
In the middle you've got Starck who is playing with materials, and form - bordering a lot on schtick - the gilded guns, the bronzed gnomes, the plastic Louis chair.
And at the bottom you've got folks like this guy - who are just ripping off the forms of the classics, and exploiting the fact that most of us have these forms in our collective consiousness.
http://lattitudegallery.com/mmkcart/main.asp?action=SUB&CAT=Outdoor%20Ar...

i'll certainly...
i'll certainly check out that book! prior to your having mentioned it, i had never heard of it before. what exactly is 'nomadic' furniture?
personally, i think the bronze interpretations of gehry's cardboard furniture are really great! sure, credit should be given to gehry as an inspiration for these chairs (which he's not) but i wouldn't call them copies or knock offs, rather reinterpretations of classics that we all know and love.
as for how it sits... as you can probably see on the back, i added 2 steel rods for reinforcement (because it's not one continuous piece of tubular) and that certainly made the frame more sturdy. the noodles themselves do have a lot of give and when you sit down you certainly do sink in a little, but not quite as much as i was expecting when i was putting it all together. i was actually pretty worried that the first person to sit on it would fall right through and that hasn't happened yet, so...
all in all it's definitely more about form than function, but it can be used and isn't terribly uncomfortable : )

just ran across this
via greenupgrader
http://greenupgrader.com/3247/hoseware-repurposed-garden-hoses/

I spent
a lazy summer studying this book a few years ago.
The Ashley Book of Knots
photo of knots is from amazon customer images

Yeah!
Knots are cool.

As can be seen from the...
As can be seen from the subtitle, the book is about,
"HOW TO BUILD AND WHERE TO BUY LIGHTWEIGHT FURNITURE THAT FOLDS, INFLATES, KNOCKS DOWN, STACKS, OR IS DISPOSABLE AND CAN BE RECYCLED"
Here is a portion from the 2nd book that gives a good idea of what the books' principles are all about

Yikes, really?
You really like the bronze things? To me it's a total hack job rip-off.
Design is inherently tied to materiality. The first Eames chairs were remarkable, in part, because of their material. Same goes for the Wiggle chair. Whats funny about the wiggle isnt it's shape- its the realization that what you're sitting on is cardboard. Same goes for something like an Emeco chair - the lightness of the physical material belies its mass, strength, and durability.
When you remove the materiality and work only with shape you've removed a critical element of 'design' and moved it towards 'style'. And, if you mess with the shapes of the classics - as the bronze fellow has - you totally eff up their grace (see his "noguchi" and his "yanagi" pieces).
Now supposing Jeremiah, that you made a Navy chair out of lead. That would be funny. It would totally confound the entire purpose of the Navy chair (lightness, durability, strength). But like I said, you can't rely too much on the gimmick of making something in the total opposite.
Thats why I brought up Starck as borderline. He gets the materiality thing - the fancy shape of the Louis chair made in faux-glam material (polycarbonate). However, Starck relies a little too much on it - the gilded guns, the kitchsy gnomes etc - and it all becomes the same joke.

The Hennessey and Papanek
books are great. I seem to have lost mine -- probably loaned them to someone.

LuciferSum,
I really do...
LuciferSum,
I really do like the bronze wiggle chair and i think starck's ghost chairs are really great (although i don't like much of his other furniture) because i can look at them completely independent of the designs that inspired them (as does 99% of the population who aren't design aficionados). on their own, both chairs are really neat looking.
If i were to compare the wiggles, this is what i'd say: the Gehry chair used an interesting material in an exciting form (of which was his own design). the bronze chair inspired by gehry's design is a neat, practical alternative for a public outdoor space. both have a place in the design world as well as real world.

Too Easy
Why does the bronze chair have a place in the world? As a seat its not comfortable (i've tried one), as a material the bronze is only semi durable (the chair I tried had cracks in some of the wiggles) and as a form, well.. its neat - but its more neat in the original which requires the wiggles to function. As an artist the bronze guy's own furniture designs become clunky and disorganized (his non 'functional' pieces are much more coherent in terms of form and fluidity and motion) So whats left is a piece of outdoor furniture that isn't as good as the original.
Which is fine, and I'm sure he sells 1 or 2 a year. However, as art, or as design, the bronze wiggle isnt that interesting or engaging. Thats where I thought you were heading with the Noodle Cesca.
Whether people know that Starcks piece is an actual Louis chair is irrelavant. The average person can see that its a 'fancy' chair made out of plastic. And furthermore the artist (and to a lesser extent the designer) should be concerned with how their voice comes through, not always whether or not the viewer 'gets' it. A classic example is the Toyota Corolla vs. the Audi TT. The Toyota is boring and safe and completely undistinguished as a design. It is the product of focus groups, and traditional sedan design.
The Audi, however, took lots of risks, didnt follow convention (the crisp joint between the canopy and the flank required special tooling) and didnt bow to what the viewer wanted (the designers refused the marketing team's request for a raised fin on the back)