Trapped Outside

Trapped Outside 3d printed Art Sculptures White Strong & Flexible
White Strong & Flexible
Trapped Outside 3d printed Art Sculptures White Strong & Flexible
Trapped Outside 3d printed Art Sculptures White Strong & Flexible
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Trapped Outside 3d printed Art Sculptures three-way smooth join with track
Trapped Outside 3d printed Art Sculptures three-way smooth join with track
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Trapped Outside 3d printed Art Sculptures lower half cutaway with ball
Trapped Outside 3d printed Art Sculptures lower half cutaway with ball
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Trapped Outside 3d printed Art Sculptures cutaway with ball
Trapped Outside 3d printed Art Sculptures cutaway with ball
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Trapped Outside 3d printed Art Sculptures three way intersection with track and ball
Trapped Outside 3d printed Art Sculptures three way intersection with track and ball
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Trapped Outside 3d printed Art Sculptures Ordinary view
Trapped Outside 3d printed Art Sculptures Ordinary view
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Trapped Outside 3d printed Art Sculptures photo 2
Trapped Outside 3d printed Art Sculptures photo 2
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Trapped Outside 3d printed Art Sculptures photo 3
Trapped Outside 3d printed Art Sculptures photo 3
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Trapped Outside 3d printed Art Sculptures photo 1
Trapped Outside 3d printed Art Sculptures photo 1
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Trapped Outside 3d printed Art Sculptures White Strong & Flexible Polished
Trapped Outside 3d printed Art Sculptures White Strong & Flexible Polished
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Trapped Outside 3d printed Art Sculptures Raw Silver
Trapped Outside 3d printed Art Sculptures Raw Silver
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Trapped Outside 3d printed Art Sculptures Purple Strong & Flexible Polished
Trapped Outside 3d printed Art Sculptures Purple Strong & Flexible Polished
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Trapped Outside 3d printed Art Sculptures Metallic Plastic
Trapped Outside 3d printed Art Sculptures Metallic Plastic
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Trapped Outside 3d printed Art Sculptures Stainless Steel
Trapped Outside 3d printed Art Sculptures Stainless Steel
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Trapped Outside 3d printed Art Sculptures Frosted Detail
Trapped Outside 3d printed Art Sculptures Frosted Detail
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Trapped Outside 3d printed Art Sculptures White Detail
Trapped Outside 3d printed Art Sculptures White Detail
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Trapped Outside 3d printed Art Sculptures Frosted Ultra Detail
Trapped Outside 3d printed Art Sculptures Frosted Ultra Detail
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Trapped Outside 3d printed Art Sculptures Transparent Detail
Trapped Outside 3d printed Art Sculptures Transparent Detail
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Trapped Outside 3d printed Art Sculptures Red Strong & Flexible Polished
Trapped Outside 3d printed Art Sculptures Red Strong & Flexible Polished
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Trapped Outside 3d printed Art Sculptures Pink Strong & Flexible Polished
Trapped Outside 3d printed Art Sculptures Pink Strong & Flexible Polished
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Trapped Outside 3d printed Art Sculptures Polished Silver
Trapped Outside 3d printed Art Sculptures Polished Silver
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Trapped Outside 3d printed Art Sculptures Matte Bronze Steel
Trapped Outside 3d printed Art Sculptures Matte Bronze Steel
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Trapped Outside 3d printed Art Sculptures Black Detail
Trapped Outside 3d printed Art Sculptures Black Detail
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Trapped Outside 3d printed Art Sculptures Polished Bronze Steel
Trapped Outside 3d printed Art Sculptures Polished Bronze Steel
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Trapped Outside 3d printed Art Sculptures Sandstone
Trapped Outside 3d printed Art Sculptures Sandstone
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Trapped Outside 3d printed Art Sculptures Polished Metallic Plastic
Trapped Outside 3d printed Art Sculptures Polished Metallic Plastic
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Not a Photo

Trapped Outside 3d printed Art Sculptures Matte Gold Steel
Trapped Outside 3d printed Art Sculptures Matte Gold Steel
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Not a Photo

Trapped Outside 3d printed Art Sculptures Black Strong & Flexible
Trapped Outside 3d printed Art Sculptures Black Strong & Flexible
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Not a Photo

Trapped Outside 3d printed Art Sculptures Polished Gold Steel
Trapped Outside 3d printed Art Sculptures Polished Gold Steel
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Not a Photo

Trapped Outside 3d printed Art Sculptures Blue Strong & Flexible Polished
Trapped Outside 3d printed Art Sculptures Blue Strong & Flexible Polished
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Not a Photo

Trapped Outside 3d printed Art Sculptures
Trapped Outside 3d printed Art Sculptures
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Not a Photo

3d Model Viewer

About this Product

This is a model of Boy's Surface, a one-sided surface with no edges and no pinch points.

In the cutaway images you can see a small ball. It can roll in three directions but is trapped in the space cut out by the single-sided surface.

The ball is visible through a single cut that winds around the surface.

Note: The ball is red for clarity in the screenshots only. The entire model will be the same color when printed.

Other versions:

Without the ball: http://www.shapeways.com/model/237518/trapped_outside__track_.html

Solid, hollow inside: http://www.shapeways.com/model/233704/trapped_outside__solid_with_hole_.html

Solid: http://www.shapeways.com/model/233703/trapped_outside__solid_.html

Remember to give this model five stars if you like it!

© 2009, Matt Chisholm. All rights reserved.

Dimensions

IN: 0.973 w x 1.515 d x 1.417 h
CM: 2.472 w x 3.848 d x 3.6 h
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@erichschlaikjer: I heard back from Shapeways; they can't print moving parts in metal, that's why this can't be printed. Here's a version that has no moving parts: http://www.shapeways.com/model/233704/trapped_outside__solid_with_hole_.html
April 6, 2011, 4:27 pm
Well, first I ordered it in basic plastic, but since that was way below the minimum spend I splashed out on Gold Plated Glossy, which at the time was quoted at $70.45. I thought it might go nicely with my glass klein bottle xmas ornaments.
April 1, 2011, 8:02 pm
@erichschlaikjer: Not sure what went wrong with your order. I've emailed Shapeways tech support to try to figure it out for you. Do you remember what specific metal material you ordered?
April 1, 2011, 6:16 pm
My order was canceled because they can't print the ball. Perhaps this was because I tried to print it in metal, but they didn't say.
April 1, 2011, 1:04 pm
Sounds like you received the old version. Could you post a picture of the model you got?
August 30, 2010, 7:54 am
Just a week ago or so, the end of July. Weird.
August 5, 2010, 2:23 pm
Interesting, I updated it to the version with the slit in February 2010. When did you order your model?
August 5, 2010, 2:38 am
Mine didn't have a slit along the surface, as described... but I think I like it better that way! Can still see the ball at the ends of its "tunnel"
August 4, 2010, 8:50 pm
Read more about the mathematics of Boy's Surface here: http://en.wikipedia.org/wiki/Boy%27s_surface Construct a paper model here: http://www.math.uic.edu/~fields/topology/Boys_surface.html See some nifty videos here: http://www.geom.uiuc.edu/zoo/toptype/pplane/boy/
July 19, 2009, 9:56 pm
 
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