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Trapped Outside (track only) 3d printed cut away

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Trapped Outside (track only) 3d printed cut away
Trapped Outside (track only) 3d printed cut away

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Trapped Outside (track only) 3d printed Ordinary view
Trapped Outside (track only) 3d printed Ordinary view

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Trapped Outside (track only) 3d printed Three-way intersection
Trapped Outside (track only) 3d printed Three-way intersection

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Trapped Outside (track only) 3d printed smooth join
Trapped Outside (track only) 3d printed smooth join

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Trapped Outside (track only) 3d printed
Trapped Outside (track only) 3d printed

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Not a Photo

Trapped Outside (track only)

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

Other versions:

This is a modified version of Trapped Outside, without the internal ball.

The original design is here: https://www.shapeways.com/model/40473/trapped_outside.html

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

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

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

© 2011, Matt Chisholm. All rights reserved.
Details
What's in the box:
Trapped Outside (track only)
Dimensions:
3.7 x 3.7 x 3.7 cm
Switch to inches
1.46 x 1.46 x 1.46 inches
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Success Rate:
First To try.
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Rating:
Mature audiences only.