More cool things you can do with a bicycle and a laser cutter. Although I think thus stuff was hand cut but still way cool.
Bicycle Wheel Animations
My friend Karen Nazor send me a link to this video of animations being created, phenakistoscope/persistence of vision-style, on bicycle wheels, using paper cut-outs in the spokes. Really nifty. [Thanks, Karen!]
The Bicycle Animation
Original Page: http://blog.makezine.com/?p=119612
The most advanced peanut and jelly sandwich yet
The humble sandwich transformed into a technological accomplishment.
Dr. Thomas Modeen of Qatar has used a laser cutter to create what may be the most advanced peanut butter and jelly sandwich yet. At the very least, this is the most thought someone has ever devoted to the most humble of lunches.
While laser cutting is often used to decorate food, Dr. Modeen has actually tried to improve the food. Basically, he cut little individual pockets to keep the peanut butter and jelly separate until the last possible moment. I???ll let him explain the rest after the jump (with a lot more pictures).
Each of the sandwiches slices is divided into twelve, numbered and matched, ???bites???. Each bite includes corresponding, same size, cavities into that secure that equal quantities of both peanut-butter and jelly are distributed into each of the numbered bites. The cavities of the middle slices are misaligned in comparison to each other to make sure the won???t mix and become too gooey before the mastication phase??? A number of different cutting settings were used to create a variety of bespoke cuts across the toast planes. The ???toasting??? patterned (wave-like) cuts are dense and shallow; the ???bite??? cuts are a bit deeper to allow for each of the twelve bite segments to break off; and the cavities for the peanut-butter and jelly have been cut all the way through???
Posted in Laser Cutting, Taylor Gilbert by Taylor Gilbert | No Comments
Original Page: http://blog.ponoko.com/?p=32087
From 2D to 3D: Just add light
Inkjet printers create light powered hinges
Imagine if you could take an everyday inkjet printer, and use it to create dynamic self-assembling three dimensional structures. Researchers at North Carolina State University have been doing exactly this, and the results have a simple elegance that is really quite mesmerising to behold.
Dr Michael Dickey, one of the authors of the paper ???Self-folding of polymer sheets using local light absorption??? explains the team???s findings:
This is a novel application of existing materials, and has potential for rapid, high-volume manufacturing processes or packaging applications.
It all happens remarkably quickly. A pre-stressed plastic sheet is run through a standard inkjet printer, where bold black lines are printed onto the material. When exposed to an infrared light source (such as a heat lamp) the darker areas absorb more energy and folds occur without any external mechanical intervention.
Click through for a video to see just how fast this shape-changing occurs.
The wider the printed line, the greater the angle of fold. So with a bit of careful thinking beforehand, some nifty outcomes are possible. Cutting the material into different patterns and then printing varying thicknesses on each side of the plastic can enable complexity of forms far beyond a simple cube or pyramid. This behaviour has been modelled by Dr Dickey and his colleagues to achieve precise control over both the amount of movement and the speed of transformation.
NCSU via Engadget
Posted in Guy Blashki, Materials, Technology by Guy Blashki | No Comments
Original Page: http://feedproxy.google.com/~r/Ponoko/~3/dICm99sLGRQ/