Reddit Users Gather to 3D Print a Weightlifting Prosthesis for Recent Amputee

weight33D printed prostheses have been garnering a lot of attention as of late. Whether it is the hands and arms being created on a daily basis by volunteer groups like e-NABLE, or if it is the high tech versions being fabricated in University labs, we know one thing for sure — 3D printing will play a large role in the future creation of prostheses.

weight7In June, I saw Reddit user DrSpaceMann’s post on the fitness subreddit asking for workout regimes for his recent amputee brother. His brother had been involved in an accident and was scheduled for a full below-the-wrist amputation. Understandably, he wanted to continue training at the gym and asked his younger brother to find a way.

I had already been in touch with the creators of an open source myoelectric prosthesis called theHACKberry — an open source 3D printable myoelectric prosthetic arm created by exiii Inc., a Japanese robotics company based in Tokyo, which specializes in arm prosthesis.

Reading DrSpaceMann’s post, I really wanted to build a HACKberry that would at least help with his brother’s day-to-day activities. The initial plan was to build a custom HACKberry, printed from materials that focus on lightness, strength and durability — and I decided on RepRapper Tech’s new aluminum-filled PLA (around 30% aluminum).

weight2

“I’m really sorry to hear that. I know you’re not looking for a prosthetic right now, but I’d love to build your brother a new hand for free. I could print it right out of aluminum,” my reply on reddit read.

Shortly after my reply to DrSpaceMann, I was contacted by a hand surgeon from Melbourne, Australia, named Neela Janakiramanan. Neela works at the unit responsible for the first successful hand transplant in Australia; her interest in prosthetics arose from direct medical experience and the realization of the limitations on what hand surgeons could actually achieve. Neela explained to me that many health interventions are founded with good intent, but ultimately fail to have a health impact because they’re not implemented systematically – or with a pre-planned assessment methodology.

I realized that with Neela’s guidance, we had the opportunity to work towards refining the HACKberry into the world’s first medical-grade open source prosthesis, something that would greatly benefit everyone.

There is such a huge scope to push the whole field forward with low cost and actually useful prosthetic upper limbs, it could really change the face of hand surgery if the problems could be ‘solved’. Thus far there hasn’t been a good enough (affordable to anyone) prosthesis to really justify solving all the ancillary issues, so that’s where the challenge will be – both to get patients to actually love and use it in the longer term, and to demonstrate that they do, and have better PROs as a consequence, so that insurers and health systems (and sometimes patients) will actually pay for the thing.
weight4

Following a few false starts from other contributors (such as Oak Ridge National Laboratory who was due to help with material research, but ultimately couldn’t for legal reasons), I built the first plastic prototype HACKberry here at Wevolver, to begin testing. The same week I finished the prototype, doctors treating Ryan decided not to remove his whole hand at the wrist and instead opted for a partial amputation. This meant the HACKberry was no longer compatible with Ryan’s injury.

Taking a leaf out of DrSpaceMann’s book, I posted the problem on Reddit and asked for help from designers and engineers in constructing a new prosthetic for Ryan. The response was overwhelming.

Reddit user, Andrew Sourk, volunteered to bring his in-depth knowledge of Carbon Fiber and Kevlar molding; Matt Miller introduced the idea of selective laser sintering; and Maxwell Emerald Perham brought his knowledge and enthusiasm of 3D design and mechanical engineering, and the list of highly qualified volunteers wanting to support the project just kept on growing.

weight6

“Size #800 Kevlar thread can hold over 200 pounds and it’s something like 1.1mm in diameter compared to 1.6mm for steel cord.” wrote Andrew Sourk.

One of our most important contributors has been BULL amputee (bilateral upper limb loss) David Worley, who has been using prosthetics for 15 years, since his own accident. David joined the team to offer support to Ryan and to provide the team with a decade and a half of experience as a prosthesis user.

The days following the Reddit update, our team of volunteers got to work sharing designs and ideas. We also decided that in addition to refining the HACKberry under Neela’s guidance, we would build Ryan a dedicated weightlifting prosthetics using Kevlar and Carbon Fiber — including a built-in digital rep counter capable of linking to Ryan’s smartphone via Bluetooth in order to record his workout performance.

David Worley pointed out the the i-limb ultra revolution, and through this we discovered the i-limb digits — a smartphone operated hand prosthesis, perfect for Ryan’s needs. The problem is the i-limb costs anywhere from $38,000 to more than $120,000 depending on the level of customization required, and Ryan would need two of them.

weight5After this discovery, I really felt an obligation to contribute towards making a prosthesis with the same level of quality and functionality as the i-limb and then release as PUBLIC DOMAIN.

Right now, we’re in the process of organising a 3D laser scan of DrSpaceMann’s brothers hands for the engineers to work from, but we’ve already been exchanging a number of designs. Our goal is not only to help DrSpaceMann’s brother, but to work together as a community towards creating the world’s first public domain medical grade myoelectric prosthesis — and who says we’ll stop there.

SV Microwave Launches Cable Builder Software

Industry leader in coax cable assemblies, SV Microwave launches the most advanced and secure e-commerce coax cable builder solution.. Features area s follows

FEATURES

  • Design miniature and low loss coaxial cable assemblies for your specific application
  • Choose from a variety of in-stock standard connector series and cable types with length up to 99”
  • Over 125 connector and cable combinations available
  • Instantly view pricing, technical specifications and electrical performance graphs
  • Mobile compatible with android/iOS

APPLICATIONS

•  Prototype builds for testing
•  Military / Aerospace
•  Broadband
•  Instrumentation
•  Telecommunications

BENEFITS

•  Recieve cable assemblies in 1 week
•  Online order placements (credit card or PO)
•  Application available 24 hours a day

CAMbot a low cost CNC router kit

I am currently involved in running a Kickstarter campaign offering low cost and easy to assemble CNC router kits. You can find the project at https://www.kickstarter.com/projects/434459617/cambot. In this article I hope to give you more insight into our story, why we decided to even do the project and about the campaign itself.

It was during my engineering degree that I got my first exposure to the world of CNC. At my university they had some really powerful and expensive CNC machines like the kind used in heavy industry – I was instantly hooked!

My partner and I were interested in designing and making products that we could sell online and at local markets, such as customised phone cases etc. We considered 3D printing but at the personal desktop level you are pretty restricted to what materials that you can use. This is what initially made us go down the CNC router path.

After research we found that all the kits and machines available were just too expensive for us. Also they seemed to be aimed at people with a garage etc. We were just two students staying in a small cramped apartment. CAMbot is specifically focused on being low cost and very easy to construct. From first hand experience we know how frustrating it is when you need special tools, extra bits of equipment on top of what you get in the kit or a dedicated space to work. Seen as we found it tough to get going we have decided to offer kits for people facing similar challenges.

From a design point of view, CAMbot is completely made from pre-cut sizes of wood. By using these standard lengths we reduce the amount of cutting. What cutting and drilling there is can be done on our CNC router. The remaining parts are all standard components that we can buy in bulk; this is how we can offer the kits at such a competitive price.

A lot of work has gone into simplifying the design as much as possible. This means that it is really intuitive to assemble CAMbot, you just have to screw a few things together. You still get the satisfaction of assembling something, however it is fun and not stressful – we have done the stressing for you. The electronics comes in a state where you can just plug and play. Literally anyone can assemble CAMbot.

This is our first crowdfunding campaign and it is proving to be an excellent learning experience. In hindsight it would have been wiser to establish a following beforehand. We chose Kickstarter just because it is a more recognizable name, the major drawback being that we don’t get anything if we don’t reach our target. Our marketing strategy has been to employ social media, contact relevant blogs and websites and also to release interesting content on our YouTube channel. We are giving it our best shot. We strongly feel that we are offering something of excellent value so we remain confident that our efforts will pay off eventually.

Any support you could offer would be a big help.

Kind regards

Karl Blacker

Will the Real Arduino Please Stand Up?

The original founders of Arduino—the popular programmable DIY electronics kit—appear to have had a falling out. And that might bring about what could be the world’s first open-source hardware fork, a sort of developer schismthat’s much more common in the software world.

At the moment, two different websites display the Arduino logo and branding. There’s Arduino.cc, Arduino’s original site. Now there’s also Arduino.org, which prominently displays the text “the adventure continues,” as if it has been passed the torch.

Arduino.org is already selling the latest Arduino board model, Zero Pro. Meanwhile, Arduino.cc displays the Zero as “coming soon.” It’s evident that the two websites are operating separately under different guidance.

I’ve attempted to get comment from Arduino for the past week, to no avail. All I got back was a request not to publish an article until Arduino founder, inventor, and CEO Massimo Banzi delivers a statement. Banzi has spoken to the Italian press to refute rumors that he was no longer in charge of the project, but has kept quiet since.

Fork That Hardware

Arduino, of course, isn’t just software code—it’s also a physical microcontroller that runs that code. In order to fork that, both parties would need to have some control over the manufacture of the boards.

Unsurprisingly, in this case they do. Arduino co-founder Gianluca Martino set up a company that has been the main supplier of Arduino products for years. Martino’s company has now changed its name from Smart Projects to Arduino, and launched the Arduino.org site to go with it.

Needless to say, this decision hasn’t gone over well with some of the other founders. Two legal proceedingsa trademark case in the U.S. and a lawsuit in Italy—are currently underway to determine who gets to use the Arduino trademark. In the U.S. case, filed in January 2015 and publicly available on the website of the U.S. Patent and Trademark Office, both companies claim to have been using the Arduino trademark before that other.

As the process continues, makers will still be able to get their hands on Arduino boards, as neither side has ceased production. While Martino is in talks with Panasonic and Bosch to expand Arduino board manufacturing, Banzi is speaking with Intel and has made public his designs to expand Arduino manufacturing even to China.

This possible fork indicates an increasing amount of money to be made in the hardware hacking Internet of Things sector, a potential fortune big enough to drive founders apart. A hardware fork can’t be good for the Arduino brand, but it’s clear from all the lawyering that the schism runs deep.

Looking for a New DIY 3D Printer to Build? Check Out the iTopie’s New Design

BY ·

3dp_itopie_repraplogoWhile more and more people explore and adopt 3D printers and 3D printing technology, they tend to buy popular, pre-manufactured machines like MakerBots and Printrbots.

But the roots of the 3D printing industry have always been in the maker community, going back as far as 2005 when the RepRap Project was founded by Adrian Bowyer. The goal was to develop an open source design for an inexpensive and self-replicating FDM 3D printer, and over the years it has produced hundreds of variant designs, upgrades and evolutions including the original Darwin design, as well as the popular Mendel and Prusa Mendel variants.3dp_itopie_main

When Swiss maker Sébastien Mischler decided to create a RepRap 3D printer workshop at his local maker community, he naturally looked to a pre-existing RepRap design. He started with the Prusa i3, which is a very affordable and widely adopted design, making it relatively easy to source parts and assemble. But he quickly noticed what he considered drawbacks to the design, notably an unstable Z axis. He tried to stabilize the axis with some simple threaded rods, but he found the need to constantly adjust, and readjust them frustrating and ultimately a waste of time. So he decided that since the i3 design required CNC milled parts anyway, he may as well take full advantage and machine as many of his own parts as he could.3dp_itopie_threadedrods

Having already built several variations of RepRap designs Mischler set out to create his own 3D printer that would solve all of the problems that he found troublesome. He started by seeking out videos, images and build logs of all types of 3D printers. He decided that he wanted to keep the design simple, focus on rigidity and avoid any 3D printed parts that could be fully integrated into the design of the printer’s frame. Once he had all of his ideas and research material organised, he did a hand drawn sketch of the design for his iTopie 3D printer and then ultimately turned to SketchUp. He designed the CNC components and generated the G-Code using CamBam.

“If you have access to a CNC, [the iTopie costs] approximately $400. But it can be less or more, depending on the desired final quality. Today there are a lot of providers, take your time to choose yours, looking for information on [the RepRap forums] and ask if you can not find, and eventually share your sources if you find better,” Mischler explained.

3dp_itopie_bedThe iTopie RepRap 3D printer has a generous envelope of 390 x 440 x 440 mm with a respectable print volume of 200 x 200 x 230 mm. Mischler said that he generally prints at a printing speed between 60mm/s and 80mm/s for any high-quality parts, and while it can reach higher speeds the extruder tends to not be able to keep up on anything over 100mm/s. He said that the iTopie is capable of easily printing layers with a resolution of 0.2mm down to 0.1mm. He is certain that it could handle even higher resolutions, but it would slow down the print considerably so he’s found himself too impatient to test it. However, Mischler believes that printing speeds and resolutions are a lot more difficult to determine than most printer manufacturers lead you to believe.

3dp_itopie_side“Resolution, speed, etc., too often I read nonsense about it. I must be honest and say that it depends on too many factors. The quality of materials is essential and all I can tell you for sure is that you have nothing good with low-end hardware. This does not mean it does not work! it just mean you would not have the same results,” Mischler said.

Overall Mischler said that he is quite happy with how his iTopie 3D printer came out. He says that its strengths lay in a simplified assembly design that automatically aligns, requires fewer 3D printed pieces resulting in more stability, and a construction time that can be counted in hours rather than days.

We first heard about the iTopie back in December, and since then Mischler has decided to “increase the visibility” of the printer by posting its files on Thingiverse, which he accepted as having been “inevitable” for the design. The machine looks sturdier now with its machined housing, as well.

You can read more about his 3D printer design and find all the downloadable files over on Thingiverse and then head over to our iTopie RepRap 3D Printer forum thread at 3DPB.com to let us know your thoughts.

DIY Surgery: The Future Of Medicine?

THE OPEN SURGERY MACHINE CONCEPT IS AN OPEN-SOURCE ROBOT THAT CAN PERFORM SIMPLE OPERATIONS IN THE COMFORT OF YOUR HOME.

In 2015, if you need an operation, you go to a hospital. The Open Surgery Machine imagines a future in which getting an appendectomy is as DIY as downloading a template from Thingsverse and firing up your MakerBot: an open-source robot surgeon in a box that is capable of performing simple, low-cost operations safely and with little doctor intervention.

Frank Kolkman is a Dutch-born interaction designer who recently graduated from London’s Royal College of Art. He tells me that the inspiration for the Open Surgery Machine wasn’t sci-fi, but YouTube. “America has the most advanced health care industry in the world, but there is this growing group of middle-class U.S. citizens who have no access to it, and YouTube is currently filling this gap,” he says. “Mainly uninsured Americans are sharing videos on how to perform hacks on yourself as an alternative to professional care.” (You can see some of these videos here, although you’ll want a strong stomach to click that link.)

Conceptually, Kolkman’s Surgery Robot explores the idea of combining DIY medical pragmatism with the more capable innovations found in medical industries. It’s designed to perform simple surgeries like laparoscopic surgery, in which three or more small keyhole incisions are made to allow a surgeon to operate inside a part of a patient’s body after inflating it with CO2, reducing the risk of infection. That would allow the DIY Surgery Robot to perform (again, theoretically—the concept is non-functional) appendectomies, prostate operations, hysterectomies, and also colon and general inspections. These procedures are already often performed with the assistance of robotic surgery systems; the DIY Surgery Robot would just take those doctors out of the equation.

Ultimately, the Surgery Robot is only intended as the focus point of a thought experiment: What if there was just as robust an online community of hobbyists, engineers, and designers for alternative health care products as there are for 3-D printer and CNC milling machines? “I hope that by challenging the socioeconomic frameworks the current health care systems operate within, where health care is valued in terms of money and labor, my project raises questions about the social value of health care by showing an alternative approach,” Kolkman says.

But the designer is also frank about the fact that he thinks it’s unlikely that something like the DIY Surgical Robot could get off the ground. Even taking the legal and liability aspects of the project out of the equation, patents would likely kill it as a commercial product in the incubation stage: most of the base technologies relied upon for robot surgery are thoroughly patented and rigorously guarded.

You can read more about Kolkman’s Open Surgery project here

Alan Turing 6 Instructions

As MIT professor John Guttag explains, Interesting he originally studied english in undergrad.

Original 6 instructions created by the conflicted and emotional Alan Turing. Most of which are the basis for our text editors today. Instructions can be thought of as functions or methods, and most text editors operate very much the same

Right: Move the Machine’s head to the right of the current square
Left: Move the Machine’s head to the left of the current square
Print: Print a symbol on the current square
Scan: Identify any symbols on the current square
Erase: Erase any symbols presented o the current square
Nothing: Do nothing