A replica of Cobb's totem from the film "Inception". As a below review has noted, and from my own version, the top works very well, and spins upwards of 90 seconds before toppling. You just might be in a dream.

Since the response has been so great. I am raising funds on Kickstarter to offer a more refined product with nickel plating and milled from steel. Click here to support my Kickstarter

Even if you would like to order the 3D printed version here, please consider backing the Kickstarter to help me launch the product more affordably and with greater fidelity.

Have a new MacBook? Here's a little tool to help you keep a MagSafe adapter on you at all times :) And here is a link to the converter just in case, Apple Store MagSafe Converter

A theorem walks into a bar...
The Klein Bottle is a mathematical joke: a surface with only one side. This one feels just right in your hand and opens bottles with ease and style. Built to last in steel, it's the perfect touch for any math fan's kitchen.

Yes, it really works!

Klein not-a-bottle-opener is here.

Other Sizes available: scroll down to see. When I model in 3D it often feels like I'm sculpting. I build each piece, put it into place, tweak/adjust, then add the next piece. With the Triangulated cuff I really wanted a design that seemed minimal yet dynamic, and I adjusted my model until I got the effect I was satisfied with. The final result was 3D printed in a black plastic nylon material (BSF - Black Strong & Flexible). It's a very lightweight yet strong and flexible material (as the name implies). The ends of the cuff are rounded so it slides on and off easily. Sizing: *Size Extra-Small/Petite interior dimensions: 2 1/8 inches wide x 1 1/2 inches tall [54mmx38mm]. Available from Shapeways here: http://shpws.me/3qW1 *Size Small interior dimensions: 2 1/4 inches wide x 1 3/4 inches tall [57mmx44.5mm]. Available from Shapeways here: http://shpws.me/3qW0 *Size Medium interior dimensions : 2 1/3 inches wide x 2 inches tall [59mmx51mm]. Available from Shapeways here: http://shpws.me/3qW2

The hot shoe red dot sight adapter allows you to mount a red dot sight onto your camera's flash hot shoe. A red dot sight greatly facilitates taking pictures of birds and other fast-moving objects with a telephoto lens.

The window of the red dot sight shows a glowing mark (dot, cross-hair, etc. depending on the model) in a way that mimics a laser spot. You calibrate the red dot sight so that its mark corresponds to the center of your image frame when you use a high-zoom telephoto lens. Then, you no longer need to aim the camera with the viewfinder or the screen -- you just use the red dot sight.

Notes: The red dot sight and the camera shown in the pictures are not included with this item -- you provide them yourself. Also, I have not tested the White and Black non-polished materials. Surface finish with these materials may be a bit rough.

You can use any red dot sight with Picatinny or Weaver mount. The sight in the pictures is similar to this one on Amazon.com: UAG Tactical 4 Reticle Red Dot Open Reflex Sight

The jet fighter pictures are from the Blue Angels air show in San Francisco a couple of months ago. Back then I used a flimsy red dot sight adapter that was the motivation for designing the sturdier one-piece version described here.

Ever wondered what your plants sound like? Any audiophile can appreciate this sound inspired design. This creative planter looks like a speaker box! The speaker box planter is perfect for showcasing your awesome plant. Great for your office, desk or small garden. Drainage hole is included in the bottom. Plants in the photo is not included. This product is unique and made to order. We do not manufacture this product in batches, it is fabricated ON DEMAND. This product does not physically exist until it has been ordered. This product is 3D Printed and not mass manufactured. When you purchase this product, you will be one of the only few people to poses this item.