3D Printing: Additive Manufacturing Explained in Two Dimensions

3D printing allows the creation of the parts you need and the items you want, instead of settling for for “cookie cutter” off the shelf items. Not everyone has a Maker Shop nearby, or the type of materials they need to print in the way they want. One solution for this, is Shapeways, a marketplace that allows you to request what you need or upload your own plans and have it printed with the right tools (right type of printer) and right materials.

The additive manufacturing process employed by 3D printers allows for rapid prototyping of pieces and parts that can be used in many different applications. Shapeways is able to print in many different materials including plastic, metal and porcelain. Take a look at the infographic below to learn a bit more about the processes used by Shapeways to make designs come to life!

Dutchman integrates a 4.5GHz water-cooled rig into his d3sk

By Vlad Savov

Cooler Master’s 2011 Case Mod Competition looks to be the gift that keeps on giving. After serving up a Tron lightcycle and an architectural marvel, it’s now playing host to a mod that redefines the idea of an all-in-one PC. Peter from the Netherlands has managed to fit a pretty bombastic set of components — 4.5GHz Core i7-980X, two ASUS GeForce GTX 580 graphics cards in SLI, over 12TB of storage with an SSD boot disk, and two PSUs providing 1,500W of power in total — together with a water-cooling setup and the inevitable glowing lights inside one enclosure, which just so happens to also serve as his desk. The three-piece monitor setup is also a custom arrangement, with a 27-inch U2711 IPS panel being flanked by two 17-inchers. Admittedly, this isn’t the first water-cooled and over-powered desk we’ve laid eyes on, but that shouldn’t prevent you from giving the links below a bash and checking out the amazingly neat design of Peter’s l3p d3sk.

Dutchman integrates a 4.5GHz water-cooled rig into his d3sk

Modders Make Android Work the Way You Want

By Mike Isaac

In one of many tweaks to the Android interface, a customized boot screen features scrolling lines of code. Photo: Jim Merithew/Wired.com

CyanogenMod is one of the biggest hacks to ever hit the Android mobile platform.

It’s got an estimated 500,000 users. Many Android programmers use it as a starting point for their own coding projects. And according to the project’s founder, a number of Google employees have it installed on their Android devices.

Essentially, CyanogenMod is a tricked-out version of the software you’re already running on your Android phone.

Every Android-powered device comes running a version of the operating system, from 1.5 (Cupcake) all the way up to 3.1 (Honeycomb).

CyanogenMod replaces that stock OS with a custom build, letting you make adjustments to your phone that the official version prevents. It opens the door to more sophisticated custom wallpaper, changing the graphic that appears when the phone boots up, or more significantly, tethering your laptop to your phone’s data connection. With CyanogenMod installed, you can even overclock your phone’s CPU, so you can wring every last drop of processing power from it.

“You can customize the hell out of it,” says Steve Kondik, founder of the CyanogenMod project.

How a Hack Got its Start

Of course, it all began with a phone.

Debuting in 2007 as the flagship device for Google’s Android mobile platform, HTC’s G1 smartphone was the alternative to Apple’s immensely popular iPhone.

The G1 — also known as the HTC Dream — could be easily rooted, which meant giving you superuser access to the phone’s naughty bits. Essentially, it made customizing your G1 as easy as pie.

Steve Kondik had been waiting for a phone like the G1 for a long time.

“I had followed a few other Linux-based phones before,” says Kondik, citing offerings from Motorola and Nokia, “but they never had the sort of momentum that a company like Google could bring.”

And Google’s philosophy fit with what Kondik, a software developer working for a mobile content delivery company in Pittsburgh, was looking for: a more “open” platform for coders coming from a background in open source code, like Linux. Android, after all, is built on the Linux kernel.

fter each version of Android was made available for download to the public, Google published all of the code to an online repositorycalled Github, free for all to poke, prod and play around with. Developers could take any and all of that code and modify it to their heart’s desire.

Which is exactly what Kondik proceeded to do. “I had been using desktop Linux for ages,” he says, “and I just tried using some of those concepts to tweak the code. I had no idea what I actually wanted to do with the phone.”

After finishing his first version of CyanogenMod, Kondik posted the file to XDA forums, a popular message board in the Android modding community. “All of a sudden, my single-page thread is one hundred pages long,” Kondik says.

The Article Continues -> Modders make an Android work the way you want

Can You Analyze Me Now? Cell Phones Bring Spectroscopy to the Classroom

A few basic, inexpensive components and a cellular pone are all high school students need to build a spectrometer, a widely used analytical chemistry instrument. (Credit: Photo by L. Brian Stauffer)

University of Illinois chemistry professor Alexander Scheeline wants to see high school students using their cell phones in class. Not for texting or surfing the Web, but as an analytical chemistry instrument.

Scheeline developed a method using a few basic, inexpensive supplies and a digital camera to build a spectrometer, an important basic chemistry instrument. Spectrophotometry is one of the most widely used means for identifying and quantifying materials in both physical and biological sciences.

“If we want to measure the amount of protein in meat, or water in grain, or iron in blood, it”s done by spectrophotometry,” Scheeline said.

Many schools have a very limited budget for instruments and supplies, making spectrometers cost-prohibitive for science classrooms. Even when a device is available, students fail to learn the analytical chemistry principles inherent in the instrument because most commercially available devices are enclosed boxes. Students simply insert samples and record the numbers the box outputs without learning the context or thinking critically about the process.

“Science is basically about using your senses to see things — it”s just that we”ve got so much technology that now it”s all hidden,” Scheeline said.

“The student gets the impression that a measurement is something that goes on inside a box and it”s completely inaccessible, not understandable — the purview of expert engineers,” he said. “That”s not what you want them to learn. In order to get across the idea, ”I can do it, and I can see it, and I can understand it,” they”ve go to build the instrument themselves. “

So Scheeline set out to build a basic spectrometer that was not only simple and inexpensive but also open so that students could see its workings and play with its components, encouraging critical-thinking and problem-solving skills. It wouldn”t have to be the most sensitive or accurate instrument — in fact, he hoped that obvious shortcomings of the device would reinforce students” understanding of its workings.

“If you”re trying to teach someone an instrument”s limitations, it”s a lot easier to teach them when they”re blatant than when they”re subtle. Everything goes wrong out in the open,” he said.

In a spectrometer, white light shines through a sample solution. The solution absorbs certain wavelengths of light. A diffraction grating then spreads the light into its color spectrum like a prism. Analyzing that spectrum can tell chemists about the properties of the sample.

For a light source, Scheeline used a single light-emitting diode (LED) powered by a 3-volt battery, the kind used in key fobs to remotely unlock a car. Diffraction gratings and cuvettes, the small, clear repositories to hold sample solutions, are readily available from scientific supply companies for a few cents each. The entire setup cost less than $3. The limiting factor seemed to be in the light sensor, or photodetector, to capture the spectrum for analysis.

“All of a sudden this light bulb went off in my head: a photodetector that everybody already has! Almost everybody has a cell phone, and almost all phones have a camera,” Scheeline said. “I realized, if you can get the picture into the computer, it”s only software that keeps you from building a cheap spectrophotometer.”

To remove that obstacle, he wrote a software program to analyze spectra captured in JPEG photo files and made it freely accessible online, along with its source code and instructions to students and teachers for assembling and using the cell-phone spectrometer. It can be accessed through the Analytical Sciences Digital Library.

Scheeline has used his cell-phone spectrometers in several classroom settings. His first classroom trial was with students in Hanoi, Vietnam, as part of a 2009 exchange teaching program Scheeline and several other U. of I. chemistry professors participated in. Although the students had no prior instrumentation experience, they greeted the cell-phone spectrometers with enthusiasm.

In the United States, Scheeline used cell-phone spectrometers in an Atlanta high school science program in the summers of 2009 and 2010. By the end of the 45-minute class, Scheeline was delighted to find students grasping chemistry concepts that seemed to elude students in similar programs using only textbooks. For example, one student inquired about the camera”s sensitivity to light in the room and how that might affect its ability to read the spectrum.

“And I said, ”You”ve discovered a problem inherent in all spectrometers: stray light.” I have been struggling ever since I started teaching to get across to university students the concept of stray light and what a problem it is, and here was a high school kid who picked it right up because it was in front of her face!” Scheeline said.

Scheeline has also shared his low-cost instrument with those most likely to benefit: high school teachers. Teachers participating in the U. of I. EnLiST program, a two-week summer workshop for high school chemistry and physics teachers in Illinois, built and played with cell-phone spectrometers during the 2009 and 2010 sessions. Those teachers now bring their experience — and assembly instructions — to their classrooms.

Scheeline wrote a detailed account of the cell-phone spectrometer and its potential for chemistry education in an article published in the journal Applied Spectroscopy. He hopes that the free availability of the educational modules and software source code will inspire programmers to develop smart-phone applications so that the analyses can be performed in-phone, eliminating the need to transfer photo files to a computer and turning cell phones into invaluable classroom tools.

“The potential is here to make analytical chemistry a subject for the masses rather than something that is only done by specialists,” Scheeline said. “There”s no doubt that getting the cost of equipment down to the point where more people can afford them in the education system is a boon for everybody.”

Story Source:

The above story is reprinted (with editorial adaptations by ScienceDaily staff) from materials provided by University of Illinois at Urbana-Champaign.


Eurekazone’s new Powerbench aims to replace the table saw

Posted by hipstomp

Contractor Carlos Osorio has 1.5 million dollars that he can spend with seven fingers. The flooring installer severely damaged one of his hands while using a Ryobi table saw, then sued the company for “defective design” and won a settlement, causing a flurry of debate in woodworking blogs and forums: Was it Osorio’s fault, or Ryobi’s? One thing is certain: There are reportedly around 38,000 accidents involving table saws each year, or about one every 14 minutes! From now until this time tomorrow, another 104 people will have gone to the emergency room with a table-saw-related injury.

Enter Eurekazone. We first covered this New-Jersey-based company and their Smart Woodworking System back in 2008 and interviewed founder Dino Makropoulos around the same time. His is essentially the story of an inventor using clever design to replace an existing, well-entrenched system of products, and the challenges faced therein.

Since founding the company in 2000, Makropoulos has been working towards a massive undertaking: Replacing the table saw–the main workhorse of many carpentry, woodworking and model shops–with something easier to use, safer, and cheaper. At its barest, the replacement comes in the form of a “Smart Base” that attaches to any plain ol’ circular saw. The saw and base then ride on a guide rail, suddenly turning a rough device into a precision tool.


His incremental improvements and expansions to this system have led to its most developed form, the EZ One Powerbench seen in the video below.


By going through woodworking forums, you find that Eurekazone’s system has gained an Apple-like small but fanatical following, and opposition as well; old-guard woodworkers who have invested thousands upon thousands on big-ass tablesaws do not take kindly at all to an invention that promises to supplant their tool for a fraction of the price while improving the safety record.

In a bit of timely luck, Eurekazone put the finishing touches on their latest product, the EZ One Powerbench, around the time the Ryobi lawsuit started making news. The Powerbench is essentially a series of aluminum extrusions, assembled in such a way that you have slide-able stops and support along three axes; you can then attach a circular saw or router and cut virtually any size of wood in any direction. With table saw manufacturers now under fire and growing awareness of the tool’s inherent danger–and financial liability–Makropoulos seems to be getting close to his dream of replacing the table saw at last.

Follow link for Video -> http://www.core77.com/blog/object_culture/eurekazones_new_powerbench_aims_to_replace_the_table_saw_16697.asp

Fixing the planet: iFixit wants repair manual for everything

By Chris Foresman

As many Ars readers know, iFixit has long been a source for detailed teardowns of the latest Apple gear. The company’s teardowns not only provide information about the chips and other components in each new MacBook Pro or iPhone, the company also gives users the necessary information about tools and techniques needed to get inside the devices. iFixit now hopes to build a compendium of quality, trusted online repair manuals for almost anything you own that might need fixing.

While iFixit’s product teardowns have been widely covered—here at Ars and elsewhere—those teardowns were just the first step in building complete, photo-illustrated self-repair manuals for Macs, iPods, and iPhones. The manuals are usually made available for free on iFixit’s website, while the company makes money by supplying do-it-yourselfers with the necessary tools and hard-to-find parts. “We’re widely considered the largest Apple parts company, outside of Apple itself,” iFixit CEO and cofounder Kyle Wiens told Ars. “We recently added an iPad parts store.”

Wiens said that iFixit had built a great model for self-repair for Macs and other Apple products, including step-by-step guides, troubleshooting information, and device-specific Q&A forums, in addition to supplying parts and tools. After traveling to Africa and seeing first-hand the environmental and health problems that e-waste can cause, however, Wiens wanted to extend that model to include as many products as possible.

Burning e-waste in Africa
Our discarded electronics often end up—despite laws to the contrary—in third world countries. Whatever can’t be fixed or recycled often gets burned, creating noxious smoke.

While some consumer electronics companies (in particular, Apple) have made serious strides in reducing the use of harmful chemicals like BFRs, PVCs, and mercury, tons of discarded devices with these chemicals end up in landfills both here in the US and more often in third-world countries. These chemicals then contaminate the soil, or even the air, as many are often burned in open fires.

Wiens believes that repairing and maintaining the devices we already have, instead of tossing them aside for new ones, can do more to help the problem than even recycling can. “Repair is better than recycling,” Wiens said. “We can become vastly more sustainable by fixing things when they break rather than mining them for raw materials.”

To further that goal, iFixit is launching what it calls “Repair 2.0.” iFixit’s staff has written repair manuals for nearly every Apple product, but volunteers testing iFixit’s new platform since September 2009 have written detailed repair manuals for game consoles, cell phones, cameras, and even the brakes on recent Dodge Caravans. “In the last six months, [volunteers] have written manuals covering as many devices as we’ve been able to write at iFixit in the last seven years,” Wiens said.

Wiens is pleased with the progress so far, but the aim is to become a definitive source of information for the repair of any electronic or mechanical device imaginable—a “repair manual for everything.”

iFixit Polaroid 600
Repair manuals include step-by-step instructions, detailed photos, recommendations for tools and parts sources, and a helpful warning about the difficulty level

“The Internet sucks at providing repair information—it either doesn’t exist, or it’s spam-ridden, disorganized, or there’s no feedback loop to find out if the information is good,” Wiens explained. “At the same time, there is massive pent-up expertise in enthusiast forums where people are posting detailed information about repairs they’ve done. We are providing a platform for those people to share what they know, and to come together to build a resource that humanity desperately needs.”

The new platform is sort of similar to Wikipedia, in that anyone can write or edit a repair manual. The difference is that there is a built-in “reputation” system that users slowly build over time. Users earn reputation points by successfully answering help questions, writing detailed repair guides that are ranked as useful among other users, and finding and editing mistakes in other repair guides.

Each repair manual also builds a “reputation threshold” based on the expertise of those who write or edit them. If someone with a low “reputation” wants to edit a repair manual written by someone with a higher ranking, the edits have to be verified and approved by someone with a higher ranking before those changes are available publicly. The idea is that over time, repair manuals should always be high quality and “trustworthy” (important if you’re using it to fix the brakes on the van you tote your kids around in).

iFixit user
Users have a numerical reputation rating in addition to other reputation statistics. Users can also earn virtual badges for things like successfully completing repairs, fixing grammar and spelling, or providing a “nice answer” to a repair question

iFixit will continue to supply parts and tools to DIYers, though that currently is limited to tools for electronics repairs and Apple parts. “We’re especially excited about tools,” Wiens told Ars, “but we don’t have anything to announce yet.” iFixit doesn’t plan to stock parts for every gadget on the planet, but will focus on parts that can be used on a wide variety of devices. “We don’t need to sell parts for everything,” Weins said.

It’s no coincidence that iFixit launched its new initiative on Earth Day, as Wiens believes that providing people with the necessary information, parts, and tools to keep things working can have a far-reaching impact on the environment by limiting e-waste.

Even the Environmental Protection Agency is behind the idea. “The EPA would like to see more done about the growing e-waste problem, and iFixit has a novel, community-driven approach to make electronics work longer,” Andrew Fanara, product development team leader for the ENERGY STAR program, said in a statement. “We are encouraged by their solution, and are looking forward to observing the environmental impact of iFixit’s platform.”


Winscape virtual window features Wiimote headtracking, absolutely made of win

By Sean Hollister

We have not modified the above picture in any way — Scout’s Honor. That’s a real baby, wearing a real IR necklace that interacts with a real Wiimote. What’s not real, of course, is the view of San Francisco’s Golden Gate Bridge. That is generated by Ryan Hoagland’s DIY virtual window, a brilliant pastiche of interior design, RED ONE footage and Johnny Chung Lee-style headtracking, all directed to your eyes by a Mac Pro feeding a pair of plasma screens. As the viewer moves around, dual 1080p images move the opposite direction, providing the convincing illusion of looking out a real pane of glass at the incredibly detailed scenery beyond. Exciting? Then you’ll be giggling like Jr. when you hear it’s for sale. After spending a year figuring out how to mount, drive and cool the whole shebang, Hoagland would like you to have one too; he plans to have basic kits ready by July for under $3000. Watch baby-powered plasma in motion after the break, as well as a sweet time-lapse video of the build process.

[Thanks, Andy, ArjanD]

Follow link for video demo -> http://www.engadget.com/2010/04/15/winscape-virtual-window-features-wiimote-headtracking-absolutel/