by
Bathsheba
A theorem walks into a bar...
The Klein Bottle is a mathematical joke: a surface with only one side. This one feels just right in your hand and opens bottles with ease and style. Built to last in steel, it's the perfect touch for any math fan's kitchen.
The Klein Bottle is a mathematical joke: a surface with only one side. This one feels just right in your hand and opens bottles with ease and style. Built to last in steel, it's the perfect touch for any math fan's kitchen.
Yes, it really works!
Klein not-a-bottle-opener is here.
by
Camazine
Successfully printed in stainless steel from a design courtesy of Bathsheba Grossman.
The prices shown do not have any price markup since this model was provided gratis. 
by
Bathsheba
A symmetrical object. There's a smaller one here.
Smaller model, 5cm This model, 9cm
This wasn't a simple rescale; I rebuilt the entire object to fit the tolerances of metal printing at the smaller size.
Smaller model, 5cm This model, 9cm
by
Bathsheba
The other half of a sculpture. The two parts are connected by ten 3/16" spheres which you'll need to source. Ball bearings will work fine; I'd recommend gluing them to just one half so you can see the design both together, and with its interesting cross-section exposed.
If you'd like to see this in metal, I'd recommend here.
Here's a button to get both halves:
+ 
Lastly, here's the unsplit version.
If you'd like to see this in metal, I'd recommend here.
Here's a button to get both halves:
+ Lastly, here's the unsplit version.
