Hydrocolloid Printed Food

Researchers from Cornell University have been exploring a new angle on food printing: the use of hydrocolloids. What the heck is that?

In other words, produce many different foods from a limited set of edible materials.

This problem can be observed in the design of MIT’s concept Cornucopia device, which requires as many as twelve different food material canisters – and perhaps even more on the shelf. One can imagine a future 3D kitchen with racks of these canisters. That’s likely impractical and besot with logistical difficulties. The new approach tries to circumvent this issue.

Some of the hydrocolloid techniques sound very interesting (not to mention tasty):

The result is “culinary magic” including “flavored gelatin spheres with liquid centers, sauce foams, hot liquid deserts with flash frozen shells, syringe-extrudable meats, and much more.” They describe several incredible uses of the technology, including messages inside cakes or “prime rib with a hidden message”.

We’ve had prime rib like that, but not quite the same thing…

Via: ccsl.mae.cornell.edu

3D Printing in Multiple Materials – at Home

There are many differences between commercial 3D printers and hobbyist equivalents, including build quality, size, ability to print in color, etc., but now there’s one item that might be crossed off the list: the ability to print in more than one material.

The RepRap team are working on a “head changer” that would enable two or more materials to be used during a single print operation. Imagine printing tweezers with a silicone grip – which was actually accomplished in the image above. The approach is to use a “bowden” extruder and build a carriage for several of them.

In their post, they describe a model that supports up to three such extruders, but the build quality is somewhat degraded. Needless to say, it’s very early in development, but when successful, it will bring many more options to low-cost 3D printing operators.

Via: blog.reprap.org

3D Printed Chairs

Freedom of Creation has produced another set of amazing furniture, this time by Dutch designer Bram Geenen. The design of the Gaudi stool and a matching chair was done mathematically, where the curves and internal structure were determined by the distribution of various forces. From design, the furniture was produced by laser sintering. These wonderful items are available now in FOC’s online shop, but they are a tad pricey: € 5854.62 (USD$7700+) for the stool alone.

Via: freedomofcreation.com

Wujec on 3D Printing

Tom Wujec, Fellow at AutoDesk, spoke at the Thinking Digital event earlier this year. In a video of his fascinating talk, Tom speaks of the nature of emerging technologies, specifically tech evolution and tech possibilities.

He describes a special moment in the evolution of technology where the previously “impossible”, suddenly becomes possible. This is the “sweet spot” where investment recognizes the opportunity and companies actually bring the concept to life. However, he says, timing is always critical. A product too early may fail, even if it’s a great idea (Newton? Google Wave?)

He reviews several key technology concepts, including Computation, Analog to Digital, Digital to Analog, User Interaction/Augmented Reality, Mobile and Bioinformatics, most of which focus on the notion of a digital representation of actual objects. The one most interesting to us is Digital to Analog, where digital models are transformed into physical objects.

He describes a class of objects that are not producible by any other means, including an “insane” model made by one of his clients: a running shoe made from four different materials, including rubber, cloth, etc. The really interesting part was derived from a spiderweb inspiration: an intricate series of thin strands wove over the shoe. Evidently this was printed by a complex six-axis device that extruded the strands and then carefully tied the strings together in 3D!

Tom believes this type of technology could transform the shoe (and other) industries into a manufacturing-by-one model. For example, scan your feet, then select a design and await the printout. However, the shoe lasts “only about ten minutes” as it’s made of very fragile stuff.

He also describes a concrete printer able to print buildings and bioprinters, capable of printing various replacement body parts. We’ve written of these concepts before many times, but it’s still quite amazing to think about.

Is 3D printing ahead of its time? What happens next?

Via : eos.info

3D Gem Holders

Scott Elliot of the SD300 blog came up with a great idea: print Gem holders for homemade gemstones. Well, not exactly homemade, but home-etched. You see, he happens to have a C02 laser with which he’s able to engrave tiny patterns onto the gemstones. He’s discovered the best results are obtained from engraving “lab grown rubies and sapphires (both corundum)”.

Unique feature of these holders is a flexible flap on the holder’s opening, which both secures the gem for storage and allows it to be pulled out for closer inspection. A flap like this can only be printed on a Solido printer – which is sheet fed. The flap is in fact just a portion of one layer’s sheet. It may be very difficult to reproduce that design on other technologies.

Via : mysd300.blogspot.com