Faster, faster: Frosted Ultra Detail plastics now ship in 3 days. Details

<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/XRM3QXDF9/triple-gear-small-with-axle" /> <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>

Triple gear (small, with axle) 3d printed
Triple gear (small, with axle) 3d printed
Triple gear (small, with axle) 3d printed

DIGITAL PREVIEW
Not a Photo

Triple gear (small, with axle) 3d printed
Triple gear (small, with axle) 3d printed

DIGITAL PREVIEW
Not a Photo

Triple gear (small, with axle) 3d printed
Triple gear (small, with axle) 3d printed

DIGITAL PREVIEW
Not a Photo

3d Model Viewer

Triple gear (small, with axle)

OVERVIEW
  • 3D printed in White Strong & Flexible: White nylon plastic with a matte finish and slight grainy feel.
  • Be the first to try. Learn more
  • This product is intended for mature audiences.
$18.00
Share Link
Embed This Product

Product Description

This is a small version of Triple Gear, also including an axle. Note that the video here does not show the axle.

In this unusual mechanism three gears mesh together in pairs, and yet they can turn!

If you take three ordinary gears and put them together so that each gear meshes with the other two, then none of the gears can turn because neighbouring gears must turn in opposite directions. Triple gear avoids this problem by having the three "gears" arranged like linked rings - the gears then rotate along skew axes, and the opposite direction rule no longer applies (although see also Oskar van Deventer's Magic Gears for another possible solution).

This is joint work with Saul Schleimer. We were inspired by another of Oskar's designs, his Knotted Gear, which consists of two linked rings that gear with each other, and of course we wondered if it would be possible to do three linked rings!

A note on materials: I have so far printed it in White Strong & Flexible, and Strong & Flexible Polished. It may arrive with the rings slightly fused together, but gently moving them back and forth will loosen them up, and the mechanism gets smoother with use. The polished and dyed versions seem to work fine as well, and may require less working in. I haven't tested any of the "frosted detail" materials, but I imagine that they should work fine. It isn't printable in the other "detail" materials because of cleaning problems.

Here is a video showing how to loosen the gears if they arrive somewhat fused together.

What's in the Box
INCM
Triple gear (small, with axle)
White Strong & Flexible
Width
5.124 cm
Height
5.5 cm
Depth
2.838 cm

Tags
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.