INTRODUCING OUR  HOLIDAY BUSINESS BUNDLE
LEARN MORE

<div id="cookie_notice" class="sw-cookie-notice sw--padding-vert-4 sw--padding-hor-1 sw-dms--box-shadow--big"> <div class="sw-dms--color-white sw-grid-flex sw-grid-flex--wrap-mob sw-grid-flex--wrap--tab"> <div class="sw-cookie-notice__text--mob sw--padding-left-8 sw--font-size-14 sw-grid-flex__cell-5-7 sw-grid-flex__cell-1-1--mob sw-grid-flex__cell-1-1--tab"> We use cookies to offer you a better browsing experience, including personalized advertising. By continuing to use the site you agree to their use. <a href="/legal/privacy-statement" target="_blank">Learn more</a> </div> <div class="sw-grid-flex__cell-2-7 sw-grid-flex__cell-1-1--mob sw-grid-flex__cell-1-1--tab"> <a class="sw-dms-button noty_close sw--padding-hor-7 sw--position-absolute sw--position-right sw--margin-right-13 sw--hide-mobile sw--hide-tablet" data-sw-set-cookie="euCookie">OK</a> <a class="sw-cookie-notice__btn--mob sw-cookie-notice__btn--tab sw-dms-button noty_close sw--padding-hor-7 sw--margin-vert-3 sw--hide-desktop" data-sw-set-cookie="euCookie">OK</a> </div> </div> </div>

<div class="sw--display-block sw-dms--color-white" style="background-color: #1e2740"> <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 sw--z-index-10"></span> <div class="sw-row"> <div class="sw--position-relative sw--display-block sw--padding-3" style="min-width: 380px"> <p class="sw--font-size-16 sw--margin-bottom-2 sw--margin-right-6">Sign up to hear about special promotions</p> <form action="/register/email-signup" class="sw--position-relative" data-confirmation="emailConfirmationModal" data-sw-email-modal-form> <input type="text" class="sw--input-height__medium" style="width:60%;" placeholder="Email address" name="email" /> <input type="hidden" class="" name="location" value="/product/B7PD6EX8Q/shell-2" /> <input type="hidden" class="" name="confirmation" value="emailConfirmationModal" /> <input type="submit" class="btn-primary sw--margin-left-1" value="Subscribe" /> <div id="emailModalFormError" class="text-error" style="display:none"></div> </form> </div> </div> </div>

Click and drag to rotate
Shell 2 3d printed

DIGITAL PREVIEW
Not a Photo

White Natural Versatile Plastic
Shell 2  3d printed
Shell 2  3d printed

DIGITAL PREVIEW
Not a Photo

Shell 2

$32.81
3D printed in white nylon plastic with a matte finish and slight grainy feel.
QTY
Product Description

This larger shell is another form which shows the power of mathematics in reflecting the laws of nature. The opening here is perpendicular to the direction of growth. The organism always needs a similarly shaped home as it grows, which is modeled by an exponential spiral that expands at the same rate that it drops and moves out from the central axis. . This shell was created in Mathematica using the formulas developed by Deborah Fowler et al (Siggraph '92). It was cleaned and solidified in Meshlab, touched up with Netfabb Cloud. The mesh was created by a routine which perforates the polygons to a minimum width; their edges were thickened by the Meshlab "marching cubes" algorithm. It is printable in white or colored plastic, and metals which accept a .9mm minimum dimension (raw brass, bronze, and silver. Contact me if interested either in the mathematics or in a model printable in other materials.

Details
What's in the box:
Shell 2
Dimensions:
5.86 x 5.43 x 10.5 cm
Switch to inches
2.31 x 2.14 x 4.13 inches
Switch to cm
Success Rate:
First To try.
What's this?
Rating:
Mature audiences only.
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.