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.
Does not include the lighter.
The lighter is a BIC World, Classic, Maxi.
Want to make your own? Download the lighter attachment part here: http://www.shapeways.com/model/121517/ Do not flip/mirror the image, ie. please upload one you want as the actual result of the branding. If you have trouble uploading image like invalid file type, please make sure the filename has extension, for example, .jpg
Printed as two separate but intertwining parts.
Please see video above.
This principle is also available as a candle stand.
Please contact me if you require custom texture mapping.
This is a small version of Triple Gear.
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 only. 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. I'm not sure what effect the polishing process would have on the gearing mechanism, since it would polish the exposed gear teeth but not those which are meshed as it comes out of the printer. So I have disabled the polished material options. If you really want to try it, let me know. I also haven't tested any of the "frosted detail" materials, but I imagine that they should work fine. The "detail" materials require a thicker wall thickness than this model has, so it is not printable in those materials.
The Bearina IUD is a political product. It demonstrates the disruptive potential of 3D printed Open Designs to give free and global access to essential products, and circumvent industries (such as the Pharma industry) that aggressively defend their intellectual property to control the price and availability of their products. As an Open Design, the Bearina IUD promotes collaborative development and free sharing of knowledge. Further developed by a networked community or in partnership with a forward looking pharma company, It is always available for experimenting with and improving, and could evolve into a functional IUD.
The Bearina, with its bear head image, is visually friendly, to appeal, so to speak, to younger women. It is a conceptual product, a design fiction, and absolutely should not be used as an IUD. Nevertheless, it is designed according to dimensions, materials and shapes commonly found in IUDs.
You are welcome to download the production file of the Bearina IUD (.stl- Creative commons nc-at-sa 3.0 lisence) from my website (www.ronen-kadushin.com). It is free and ready for 3D printing. But if you prefer, you can also download it, or even order some Bearinas from Shapeways.com. They are only 1.25€ each.
In copper- containing IUDs, metal ions dissolving from the device create a spermicidal action. To do precisely that, a 1€ cent coin (copper covered steel) easily snaps in the plastic 3D printed part. An additional piece of nylon string is tied to the bottom part to complete the assembly of the Bearina IUD.
Sources and further reading:
http://www.wired.com/magazine/2011/07/ff_iud/?pid=6100&viewall=true
http://www.dr-miller.com/IUDe.html
http://iud-divas.livejournal.com/
http://www.fleur-de-coin.com/eurocoins/coins.asp
Disclaimer
The Bearina is a conceptual research object, and absolutely should not be used as an IUD or for any internal use.
You expressly agree to hold the designer, Ronen Kadushin, harmless for any property damage, personal injury and/or death, or any other loss or damage that may result from your use of the information or designs provided, specifically the Bearina IUD concept design.
The use of Open Design designs should be based on your own due diligence and you agree that Ronen Kadushin is not liable for any success or failure of your actions you take to modify, produce, assemble or repair your products.
The user further agrees that use of this design and all products or content contained herein are at your own risk and there is no warranty expressly made herein.
