faBrickation a new approach to rapid prototyping of functional objects, such as the body of a head-mounted display. The key idea is to save 3D printing time by automatically substituting sub-volumes with standard building blocks — in our case Lego bricks.
When making the body for a head-mounted display, for example, getting the optical path right is paramount. Users thus mark the lens mounts as “high-resolution” to indicate that these should later be 3D printed. faBrickator then 3D prints these parts. It also generates instructions that show users how to create everything else from Lego bricks.
If users iterate on the design later, faBrickator offers even greater benefit as it allows re-printing only the elements that changed. We validated our system at the example of three 3D models of functional objects. On average, our system fabricates objects 2.44 times faster than traditional 3D printing while requiring only 14 minutes of manual assembly.
More Information: http://www.hpi.uni-potsdam.de/baudisc...
faBrickation is a research project by
Stefanie Mueller, http://www.stefaniemueller.org
Tobias Mohr,
Kerstin Guenther,
Johannes Frohnhofen,
Patrick Baudisch, http://www.patrickbaudisch.com
Hasso Plattner Institute, Germany
OpenScad is able to check for changes of files and automatically recompile if a file change occurs. To use this feature enable "Design->Automatic Reload and Compile"
Once the feature is activated, just load the scad file within OpenSCAD as usual ("File->Open..").
After that, open the scad file in your favorite editor too. Edit and work on the scad file within the external editor. Whenever the file is saved to disk (from within the external editor), OpenSCAD will recognize the file change and automatically recompiles accordingly.
The internal editor can be hidden by minimizing the frame with the mouse or by selecting "View->Hide editor".Open SCAD is programmatic CAD that is used most often, but there are many others. Some of them have syntax coloring, and probably some more could be used with external text editors.
Today, we’re thrilled to announce the release of PreForm 1.0.
Shedding the beta suffix, as well as that pesky leading zero, PreForm 1.0 brings model preparation for the Form 1 to a new level of maturity and performance. It’s been a long time coming!
This major update includes hundreds of fixes and features, along with a slick interface overhaul. We've made substantial improvements in how your model’s supports are generated and printed.
Altogether, we’re incredibly proud of PreForm’s latest incarnation. There are some real stand-out features.
To make removing a freshly-printed model from the build platform easier, PreForm’s support generation algorithm now includes handy quick release tabs — small notches on the side of your model’s base that help it lift easily off the build platform. Wedging a narrow tool into the notch will give you some leverage to pop the model right off.
More File Types
PreForm 1.0 supports .OBJ files. For those of you working in SketchUp (along with a number of other CAD programs), you can now export your models directly into PreForm, without having to generate an .STL.
Native Mac OS X Menus
We’ve been squashing Mac bugs since version 0.8.4, and now we’ve got the graphical interface to support it fully.
Re-Engineering
We know you want to be printing, not troubleshooting our software or waiting for models to render. An under-the-hood overhaul of PreForm dramatically increases the program’s speed and versatility, while decreasing the amount of computing power it needs. We’re excited to see what you do with the newest version.
Anna Kaziunas France met with SoftKinetic's Chief Marketing Officer Eric Krzeslo at their suite in the LVH to ask him about their new partnership with MakerBot to enhance their 3D camera technology for 3D scanning that was announced Monday at CES 2014. SoftKinetic is provides 3D vision and and gesture recognition technologies for the consumer electronics, automotive and industrial markets; who license their intellectual property.
Patented DepthSense® 3D Imaging time-of-flight CMOS sensor is smart enough to understand the most subtle of everyday human gestures and the shape, size and behavior of objects. It measures how long it takes for infrared light to make the trip from the camera and back – the time-of-flight – and gives the 3D DepthSense camera power to turn raw data into real time, 3D images, as well as greyscale confidence and depth map images.
Object Steganography, Noah Feehan (2012)
Steganography is the practice of concealing one form of information within the properties of another; it has been used as a way of hiding information in plain sight for thousands of years.
“Object Steganography” is a series of parametrically-designed 3d printed objects: the shape of each piece is determined by a user-submitted word.
For example, one of the objects pictured here is the most common password in the world; the other is an illegal number.
Further work in this series will close the loop between computer fabrication and computer vision: Each object will be scanned back into a programming environment and decoded.
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| Object steganography software and .stl file generated |
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| 3d printed object with most common password data embedded in its form |
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| 3d printed object containing Illegal Number data encrypted in its shape |
PRINT3R for Android is built from the ground up with the help of several carefully chosen open-source projects. The Web UI (pictured above) is based on OctoPrint. The OpenGL viewer (pictured above) is based on Rajawali for Android. Other helper projects include NanoHTTPDPooled for web services and Amarino-Embed, projects we maintain separately. More information can be found in the PRINT3R for Android 'Credits' screen and upcoming documentation.
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Today the Computer Vision and Geometry Lab of the Swiss Federal Institute of Technology (ETH Zurich, Switzerland) announced on December 3, 2013 recent research results turning a normal smartphone into a mobile 3D scanner. 3D scanning aims to capture the geometry of the 3D world, however most existing solutions require a complicated setup, are often hard to use and might not always work outdoors. The technology was demonstrated publicly for the first time today at the International Conference on Computer Vision in Sydney, Australia.
Instead of taking a normal photograph, a user simply moves the phone around the object of interest and after a few motions, a 3D model appears on the screen. As the user keeps moving, additional images are recorded automatically and used to extend the 3D model. As all calculations are performed directly on the phone, the user gets immediate feedback and can select additional viewpoints to cover missing parts of the 3D model. This is an important advantage compared to solutions that batch process all the images in the cloud at a later time.
The app also makes it possible to visualize the state of the 3D scan from different viewing angles, allowing the user to cover all the areas of the object he is interested in. Having a solution on a mobile phone enables the acquisition of 3D scans on-the-fly anywhere. Our approach works in a wide variety of settings, including low-light conditions such as inside a museum. A user can capture a 3D model of a museum piece and interactively study it at home later. After reviewing the model, a user might decide to upload his 3D data to a cloud service to further refine the results.
By using the inertial sensors of the phone, the scanning process can be made simple, intuitive and robust. After the 3D capture is started, the system automatically determines the correct moments to extract camera images based on the user motion.
Contrary to image-only 3D capture solutions the app is able to determine the absolute size of the scanned 3D object, as well as the vertical direction. Because of the complexity of the calculations needed to reconstruct hundreds of thousands of points, the graphics co-processor (GPU) of the phone is used to enable a faster reconstruction and increase interactivity for the user.
The technology also allows the 3D capture of faces, giving a third dimension to portraits, profile pictures or images of loved ones.Source:
Having a convenient way of getting 3D models of everyday objects, users will now be able to copy real-world objects by scanning a full 360 degree model of an object. The resulting 3D model can be used for visualization or augmented reality applications, or even be used for 3D printing, potentially at a remote location, effectively enabling the user to replicate an object.
The patent pending technology was developed exclusively by ETH Zurich and can run on a wide range of current smartphones.
According to Plummer-Fernandez his new software, named “Disarming Corruptor”, was born from a frustration with online 3D printing clearinghouses. While trying to upload an artistic rendition of Mickey Mouse to iMaterilize, algorithms within the site rejected the model on the grounds of copyright infringement.
Plummer-Fernandez was further frustrated when he learned Thingiverse had decided to remove / ban 3D models of weapons on their site.
In an interview with Forbes, Plummer-Fernandez expressed his deep concern: “I was confronting all these taboos showing up in 3D-printing around copyrighted material and 3D-printed weapons, and I think these services are leaving their users out to dry.”
In Plummer-Fernandez’s mind, the only way to fix this problem was to subvert the model uploading process by encrypting the designs.
The way it works is pretty simple. A user with any model, whether it be contraband or not, imports their .stl file into the Disarming Corruptor software. Once imported, seven factors that determine a model’s polygon arrangement can be distorted to render the model unrecognizable. At the same time, the software generates a 7-digit code which can be shared within secure communities, allowing downloaders to unencrypt the model.
According to Cody Wilson, founder of 3D printed gun maker Defense Distributed, “[Disarming Corruptor]explodes the idea that there will be certain shapes we can guard against. Information itself is plastic, and it can be molded and changed”.Source:
Disarming Corruptor is a tool for making reversible damage to your STL mesh file. This means you can obliterate it into something totally unrecognizable, share it online under its new guise, and selectively distribute the key code to recipients so they can reverse the damage and retrieve the original object.
In a time of prolific online espionage, crackdowns on file-sharing, and a growing concern for the 3D printing of illegal items and copyright protected artefacts, DC is a free software application that helps people to circumvent these issues. Inspired by encryption rotor machines such as the infamous Enigma Machine, the application runs an algorithm that is used to both corrupt STL files into a visually-illegible state by glitching and rotating the 3D mesh, and to allow a recipient to reverse the effect to restore it back to its original form. The file recipient would need both the application and the unique seven digit settings used by the sender, entering the incorrect settings would only damage the file further.
When patent trolls and law enforcement agencies find these files on sharing sites they will only see abstract contortions, but within the trusting community these files will still represent the objects they are looking for, purposely in need of repair. It could also be used to symbolically decommission files and throw away the keys, or to make something inoperative yet still recognisable so that other users would have to request a key to put it into use.
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