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Disney Research Can Turn Any 3D Printed Object Into a Seemingly Impossible Spinning Top - 3DPrint.com | The Voice of 3D Printing / Additive Manufacturing

Disney Research Can Turn Any 3D Printed Object Into a Seemingly Impossible Spinning Top

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When you were a kid, did you ever wish you could take your G.I Joe or Teenage Mutant Ninja Turtle action figures and spin them around on the table like you would with a top? Perhaps the Ninja Turtle, Michelangelo, had mad spin-1breakdancing skills, and you wanted to portray this within your make-believe action figure world. Because of the uneven weight distribution of a typical action figure, it would have been impossible to spin one like you would a top. That is until now!

Disney Research is at it again. Over the past several months, we have seen several unique and difficult applications within the 3D printing space which Disney Researchers have tackled. Just yesterday we reported on a new technique, developed by Disney, which allows for the scanning and 3D printing of detailed hair on figurines. Back in April, they unveiled a method which enabled the printing of a fuzzy teddy bear via a 3D felting printer, and also in April they unveiled a process of utilizing 3D printers to create electrostatic speakers in any shape desired. Clearly Disney envisions 3D printing as a major area within their business model going forward.

Algorithms determine the level of infill based on the shape and weight of the object

Algorithms determine the level of infill based on the shape and weight of the object

Yesterday Disney Research uncovered a process which allows them to take a variety of oddly shaped objects and 3D print them in a way which allows for even weight distribution, in turn allowing them to be spun like a top. Many objects printed on a 3D printer will have varying levels of infill, which is the amount of plastic inside the object. Disney has come up with algorithms within a software that allows them to take a 3D model, and spin-5determine just how much infill should lie within certain areas, if that object was to be successfully spun on a specific axis.

For instance, if an object is shaped where a bulk of the weight may be on the left side of a selected axis, the program will determine that less infill should be within the left side of that object once printed out. Not only this, but it will determine the perfect distribution of weight in terms of infill, as well as the exact placement of gaps inside the object.

“Our approach then modifies the mass distribution, such that the principal directions of the moment of inertia align with the target rotation frame,” explains the research paper. “We augment the model by creating voids inside its volume, with interior fill represented by an adaptive multi-resolution voxelization.”

Additionally, some objects are just too obscurely shaped for the software to modify its infill distribution enough for a successful spin, thus the software has the ability to modify the actual shape of the object in this case. For instance, if an action figure is too heavy on one side, and the algorithms within the software determine that it is mathematically impossible to get this particular object to spin on a given axis, it may suggest that a leg or arm is shrunk slightly. It will then modify the actual 3D model, prior to printing it out.

The researchers have also shown this approach to work with objects such as obscurely shaped yo-yos. Just how Disney my use these methods within their business is yet to be seen, however I would imagine that such techniques would be invaluable within certain mechanical fields in which weight distribution and balance remain key to a product or a component’s performance.

Let’s here your thoughts on this research in the 3D printing spinning object forum thread on 3DPBcom.

spin-2

[Source: DisneyResearch.com]

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