<div class="sw-email-modal sw--display-block"> <div id="emailModalContentContainer"> <span class="noty_close sw--position-absolute sw--position-right sw--padding-top-3 sw--padding-right-3 icon-cancel sw--opacity-8"></span> <div class="sw-row"> <div class="sw-email-modal__copy sw--position-relative sw--display-block sw--padding-vert-4"> <p class="last sw--font-size-16">Sign up to get email alerts on discount promotions. There might be one very soon...</p> <form action="/register/email-signup" class="sw-email-modal__signup sw--position-relative" data-confirmation="emailConfirmationModal" data-sw-email-modal-form> <input type="text" class="sw-email-modal__signup-input sw--input-height__medium" placeholder="Email address" name="email" /> <input type="hidden" class="sw-email-modal__signup-input" name="location" value="/product/3PKA5DZPW/trapped-outside-track-ball?li=productGroup&amp;optionId=42298303" /> <input type="hidden" class="sw-email-modal__signup-input" name="confirmation" value="emailConfirmationModal" /> <input type="submit" class="btn-primary" value="Sign Up" /> <div id="emailModalFormError" class="text-error" style="display:none"></div> </form> </div> </div> </div>

Click and drag to rotate
Trapped Outside (track &amp; ball) 3d printed

DIGITAL PREVIEW
Not a Photo

Sandstone
Trapped Outside (track & ball) 3d printed Ordinary view
Trapped Outside (track & ball) 3d printed Ordinary view

DIGITAL PREVIEW
Not a Photo

Trapped Outside (track & ball) 3d printed three way intersection with track and ball
Trapped Outside (track & ball) 3d printed three way intersection with track and ball

DIGITAL PREVIEW
Not a Photo

Trapped Outside (track & ball) 3d printed three-way smooth join with track
Trapped Outside (track & ball) 3d printed three-way smooth join with track

DIGITAL PREVIEW
Not a Photo

Trapped Outside (track & ball) 3d printed lower half cutaway with ball
Trapped Outside (track & ball) 3d printed lower half cutaway with ball

DIGITAL PREVIEW
Not a Photo

Trapped Outside (track & ball) 3d printed cutaway with ball
Trapped Outside (track & ball) 3d printed cutaway with ball

DIGITAL PREVIEW
Not a Photo

Trapped Outside (track & ball) 3d printed
Trapped Outside (track & ball) 3d printed

DIGITAL PREVIEW
Not a Photo

Trapped Outside (track & ball)

Made By
OVERVIEW
  • 3D printed in Sandstone: Delicate and grainy, with a coarse finish and sand-like color.
  • Be the first to try. Learn more
  • This product is intended for mature audiences.
$7.99
Share Link
Embed This Product

Product Description

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.
What's in the Box
INCM
Trapped Outside (track & ball)
Sandstone
Width
2.5 cm
Height
3.8 cm
Depth
3.6 cm

Sign In or Join to comment.
 
 
Logo

Hello.

We're sorry to inform you that we no longer support this browser and can't confirm that everything will work as expected. For the best Shapeways experience, please use one of the following browsers:

Click anywhere outside this window to continue.