I submitted a post to another class (Green IT) and decided to use this part of the Fabricated book. I thought it was worthwhile to include here since the assignment for the Fabricated book only allowed for 250 words.

 

I have been reading a book titled “Fabricated: The New World of 3D Printing”. The book provides a top level overview of the history, technology, and potential directions for 3d printing. For starters, 3d printing is a blanket term for several different processes that exist to produce 3 dimensional physical objects from computer design files. The two most common processes are additive manufacturing and laser sintering. In additive manufacturing, an extruder heats up and excretes melted plastic. The extruder itself is mounted on a device that moves in 2 dimensions (x and y axis. The platform where the material is being secreted moves downward. Essentially the material is layered until the item is complete. In laser sintering, a high-power laser beam is directed toward the surface of a bed a of powder. The powder melts and the process continues for the next layer. The traditional (non additive manufacturing process) is injection molding. In injection molding, one first has to create a metal mold of the object you would like to produce. Creating the mold itself requires a high degree of expertise and it is a multi step process. Once the mold is complete, it is assembled into an injection molding machine. In this process, polycarbonate pellets are melted into the mold. The melted plastic takes the shape of the mold and it is completed in seconds. The benefit of this process is that the mold can create thousands upon thousands of replicas within a very short amount of time. This has been the long standing method for large scale manufacturing.

The book makes speculation that the traditional injection molding process will made be obsolete by localized 3d printers. The question now becomes, due to the reduction of scale and the dirty tradition of factories, is 3d printing a green alternative?

The book’s first response is no and makes three arguments against 3d printing as a green technology to replace injection molding. First, per unit of mass of manufactured product, a 3D printer consumes more than 10 times as much electricity as an injection molding machine. Second, an injection molding machine creates very little waste product as the input materials directly take the form of the final product. Last, 3d printing these goods instead of large scale manufacturing means that instead of several big shipments of the final products in the distribution process is more energy efficient than a distribution network built on large numbers of small shipments to different locations. As the book puts it, “if 3d printed manufacturing were merely scaled up to global proportions, there would be nothing green about it”.

The next chapter makes a complete 180 degree turn in speculation and with good reason. The book then goes on to make a case for 3d printing as a viable green alternative to traditional manufacturing methods. The trick is not to simply make 3d printing adapt to the current paradigm of large scale manufacturing. Instead, the book proposes that manufacturers leverage the capabilities of 3d printing to create a new manufacturing paradigm. Technologists like to call this “technological disruption”. The first argument is that 3d printing allows for the fabrication of products who shape is ultimately optimized for its application or environment. Second, storing  digital design and print files is more ecofriendly and less costly than storing and maintaining environmentally costly warehouses full of inventory, staff, packing materials and molds. Next, 3d printing technology does not require large scale manufacturing facilities. Therefore, localized manufacturing is feasible. Products can be made on a per need basis with quick easy local access to the customer (think Kinko’s/Staples but for specialized custom products). Lastly, there is still an unexplored potential to work with recycled or “earth friendly” materials.

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This reminds me of Viktoria’s project.

– The book covers many facets of the topic. What do you find the most exciting and/or surprising? What kinds of new possibilities do you see? What are concerns that you have?

While I’ve had some exposure to 3d printing in the past, this book has exposed to many new facets and possibilities. I’m going to extend my answer here to two areas that this book exposed me to.

Education

The book makes an interesting case for the utilization of 3d printing in the classroom at nearly every grade level. I’m a firm believer that the future prosperity of our tiny world on all fronts (economic, social, science, etc.) is dependent on the ingenuity of future generations. That’s not necessarily meant to be a blanket statement. This covers science, engineering and the liberal arts. By incorporating 3d printers in the classroom, students with scientific leanings may get additional exposure and encouraged to learn how things come together (i.e. chemistry, biology). By being able to experiment and observe they can apply the things learned in books and in lectures to real examples. This ability enables the fostering of a whole new realm of education which, besides the potential for greater effectiveness in retaining the material, may also inspire the confidence to nurture these questions and garner the confidence necessary to continue in such a field. Engineering types benefit greatly by being exposed to the printer itself. Imagine a kid seeing a 3d printer work for the first time and take an interest on how the printer head moves and is guided by the tracks. Its an elegant engineering marvel that a student with such leanings could be inspired by to pursue the field further.

Green Manufacturing

The book poses an interesting argument. Is consumer level 3d printing a greener alternative to large scale factories that utilize injection molding processes? At first glance we see that 3d printing, per pound of manufactured product, consumes more than 10 times as much electricity as an injection molding machine. The author then continues to state that “a distribution network built on large numbers of small shipments to different locations isn’t ecologically efficient. All of this adds up to the fact that if 3d printed manufacturing were merely scaled up to global proportions, there would be nothing green about it”

However, in the following chapter this idea takes a different turn. The authors make a case by greener manufacturing with 4 points. First, 3d printing can fabricate products that are more optimized for its environment or application (as opposed to other technologies). Second, storing the design files for these things is far more efficient than storing things like specialty molds. Third, 3d printing may someday allow for localized distribution, as opposed to inventory having to be transported across oceans, air, etc. Lastly, there is the potential for this technology to work with recycled or eco friendly input material.

– What questions do you have after reading the book?

  • How will intellectual property protection take place? Especially when considering the disruptive technology of affordable, and accurate 3d scanning?
  • Additive manufacturing has reached consumer level. Can laser sintering and multi material 3d printing follow?

– If there is one type of technology that you could try out/experience, which would it be? Why?

I really would like to play around with a 3d scanner and a laser sintering 3d printer. I build and collect model rockets and it would be fun to replicate some of my models digitally, be able to modify them, and then print them out.

MAD Out of Hand

February 25, 2014

What was your favorite piece(s)?  Who is the artist?  What was the method of production?  Photograph it.

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One of my favorite pieces was the “Fully Articulated 3d Printed Gown for Burlesque Icon Dita Von Teese, 2013”. It was a joint piece created by two American artists: Michael Schmidt and Francis Bitonti. Schmidt create the initial designs and sketches. Bitonti then took Schmidt’s sketches and rendered them on a CAD system. Schmidt says he was inspired by and loosely based his design on the mathematical formulas known as the Golden Ratio. His reasoning is that “it is said that its a spiral that historically has quantified ideal portions of beauty”. Once the 3d design was complete, it was sent to Shapeways for printing. Shapeways 3d printed the gown in several pieces. The process used was laser sintering. The 3000 articulated joints in the gown were rendered within the 3d printed process. The gown was printed in several pieces in white. After it was printed, the printed product was dyed black and then finished in lacquer. At this point the gown was assembled. After assembly, 12,000 Swarovski Crystals were added by hand (see my video below to see the effect).

My video of the sparkling crystals: http://youtu.be/12KRvkLb7q4

Video of the artist describing his piece: http://youtu.be/3cFdbxMhtoA

What were three observations/lessons you learned from the exhibit?

1. Software woes. When we arrived at the Museum of Arts and Design, my goal was to explore it front the top down. We were directed to the 6th floor where they were having an “open studio” session with a 3d-printing artist. There I met artist Marcy Milks. She is currently working on a project titled “The Population“. The piece, which is in progress, consists of 20,000 unique 4” sculptures. We had a great conversation about her process. As a software designer, I was particularly interested in her interaction with the software as a canvas and how the technical aspects work. It turns out that Milks deals with a lot of the same obstacles mentioned in the book Fabricated. One interesting issue is that a 3d sculpture/illustration application doesn’t exist. Milks is currently using software intended for animation. The second issue is that the way the files are interpreted present a whole never set of problems. If she 3d prints the design as is, the sculpture would be too brittle and fall apart when being handled. So, instead she first creates her design, then has to trick the software into printing an outer shell of the design. I didn’t understand exactly how this worked, but basically by telling the computer to do the wrong thing (task it wasn’t intended to do), it is able to output a more study sculpture. Essentially the sculptures are still hollow. Why not just print it solid? It’s a matter of cost. She says to print a hollow sculpture it only costs her $6 versus $20 for a solid sculpture. That wouldn’t be too much of a problem for a handful of these, but she is expecting to 3d print a minimum of 20,000 of these little guys!

2. New possibilities of approaching physical art. Another tremendous insight gained from this experience at the Museum of Arts and Design is the new real of possibility that this medium creates. In chatting with Marcy Milks, she mentioned that if she were to create 20,000 sculptures in plaster, by hand or by casting, it would take her much too long and likely lose interest. 3d printing creates an entirely new realm of possibilities. Not just in the case of scale (like Ms. Milk’s project) but also in the complexity of the artwork itself. Additive manufacturing allows for incredible detail not previously possible in mediums such as hand sculpting or injection molding.

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3. Another important insight gained from this exhibit is that additive manufacturing is not a solitary one-step process. Most, if not all, of the pieces in the exhibit required significant “post production” after coming out of the 3d printers. For example, the 3d dress showcased above was printing in fragments. Those fragments were then treated with special chemicals, dyed black, and then finished with lacquer.

How does your visit to the exhibit inform what you have been learning from reading Fabricated?

1. Software issues. As I mentioned above regarding the Marcy Milks “The Population”, the software still seems to be in its infancy. The book, Fabricated, went into great detail about the problems with file formats and translating design files into print files (STL). My conversation with the artist above reinforced these issues.

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2.  Low cost (3d scanning, Microsoft Kinect). One area where I feel that Fabricated left a lot to be desired is the discussion of 3d-scanning. At the last section of the exhibit, Shapeways set up an area where museum goers can be “3d scanned” and then they can order a 3d printed sculpture of themselves from their website. The set up was relatively simple. They had a rotating platform, a solid color backdrop and two photographic lamps. The scanning was done using a retail-off-the-shelf Microsoft Kinect device. This device is sold as a companion product to Microsoft Windows and it sells for less than $150.

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In what ways did your visit shape your area of interest in 3D design and printing?

This exhibit truly gave me a deeper sense of appreciation for additive manufacturing. Every art piece was created using some form of 3d printing, in all its different methods (laser sintering, additive manufacturing, etc.). It’s inspiring to see artists experiment and create marvelous pieces with this infant technology. Some of these pieces could only be previously exist in the mind of an artist and thanks to the coming of age for a new technology (ability to create complex shapes, etc.) we are entering into an entirely new realm of possibility.  Below is a picture I took of a highly ornate column from the exhibit. This type of high resolution decoration would be incredibly difficult and time consuming to do by hand. The last two photos were of a small diorama in the exhibit which talked about the low cost, rapid, and innovative way of manufacturing homes in the future using additive manufacturing processes. While not as artistically dramatic as the other pieces, I found this to be incredibly inspiring.

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Makerspace Day

February 25, 2014

At first I didn’t know what to expect. I’ve been a part of hackathons and I’ve attended Bent Fest so my expectations where somewhat in line with those events. However there was a different element. This class is a collection of Zicklin Honors business students. For them, this was the first time being exposed to a collaborative hands-on event like this. What was interesting was that even in the limited time given, everyone was able to put something together and exercise their creativity.

Initially, I gravitated toward the Arduino electronics kit. Unfortunately, the kit required an IDE and a power supply. I asked the professor if I could just spend the class time studying the manual but unfortunately that would defeat the purpose of the exercise. So, after moving around the room looking for another kit to work with, I ended up working with Viktoria on a modular electronics kit. I chose this over the other items because I wanted to do something with electronics and/or software. The other projects were a bit more on the artsy side, so this was a good second choice to the Arduino kit. This was not my first time working with electronics. In the past I’ve played with electronics kits and have done modifications to the circuits on musical instruments. What I haven’t done yet, is combine my interest in computer programming with “hardware” programming. Perhaps that might be my next step!

BUS6300 Makerspace

Viktoria and I ended up connecting a few of the modular electronic components to come up with a “walking propeller”. We connected a power module, a sliding potentiometer, a small propeller, and an LED light. When the slider is between 0-50%, the propeller spins in one direction. When the slider is above 50%, it spins in the opposite direction. When laid down flat, and when you oscillate the voltage with the potentiometer, the propeller alternates direction and creates the illusion of walking. The LED light pulsated along which helped us determine how much voltage was going through the circuit. Here is a video of our project in action. Given more time, I would want to learn to use the Arduino kit to build a remote sensing device that is aware of elements in its surrounding.

 

This article was published this morning and it is absolutely mind-blowing. While my personal interests are in the aerospace sector, anyone that knows me knows that whenever we talk about 3d printing, I’m most excited about its application in bio-tech. Previously I only thought about custom and affordable prosthetics for children but this here… this is another level of amazing.

3D printing has been creeping its way into the healthcare industry, slowly but surely, over the last few years. We have seen 3D printed human tissue, 3D printed prosthetics of all types, and now 3D printing is being used as a model for doctors to better envision particular procedures.

Roland Lian Cung Bawi, the 14 month old son of two Burmese immigrants, now residing in Owensboro, Kentcky, had major defects to his tiny little heart. The defects, which included a hole in his heart as well as misaligned aorta and pulmonary arteries, if untreated would have doomed Roland to a short unhealthy life. This is when Surgeon Erle Austin stepped in. Austin initially had 2D images of Roland’s heart, which he showed to several other surgeons, on his path to correct Roland’s condition. The problem was that the 2D scans were not precise enough, leading to several surgeons offering different suggestions on how to proceed. This is not the kind of advice a surgeon likes to receive, leading up to a major operation.

This is when Austin decided to turn to the School of Engineering at Louisville. They used a Makerbot Replicator 2X, 3D Printer to create a model of Roland’s heart, and all its defects. The model was printed in 3 separate pieces so that the surgeons could take it apart and see the interior.

“Once I had a model, I knew exactly what I needed to do and how I could do it,” said Austin. “It was a tremendous benefit.”

Having the model 3D printed allowed Austin to cut out a significant part of exploratory surgeries, and also shorten the time it took to operate on the tiny, delicate heart. The surgery was successfully completed on Monday, February 10th, and marked the first use of a 3D printer in the state of Kentucky for a pediatric heart patient. Roland is doing well and his family is relieved.

 

3D Printing Helps Fix Child’s Heart, Save Life

Admittedly, before reading the 4 assigned chapters I have had some experience with additive manufacturing, otherwise known as “3d printing”. My first exposure was sometime in 2008-2009 while I was working at Tekserve in New York. Tekserve is an Apple sales and service company. Besides Apple products they also sell a plethora of complementary technology products. During that time I worked in corporate sales and marketing strategy. Our customers were mainly design houses, film and music studios. I became interested in being an intrapreneur within Tekserve and subsequently pitched many ideas for expanding the brand. Some examples of my pitches were: Tekserve branded high performance hard drives (with data recovery services included), an iPad content creation academy (at the time iPads were still new and mainly seen as content consumption devices), and a 3d printer reseller. All I really knew about 3d printers was that they were split into two categories. On one side was the tinkerers (consumer level) and on the other side were professional organizations. Before Tekserve I worked in large scale custom manufacturing so I understood some basic manufacturing principles and the value of rapid prototyping. I was also a tinkerer myself, as I often experimented with electronics to make my own audio devices (synthesizers, effects processors, etc..). I was only able to make a little bit of headway with Tekserve. I contacted several 3d printer manufacturers (including Stratasys) and obtained all sorts of pamphlets and 3d printed samples. Back then Tekserve executives did not show much interest. At the time of writing this blog post I noticed that on their website they now offer a line of 3d printers. Besides this initial exposure to 3d printing, I am also aware of many facets in which NASA is experimenting with 3d printers. As a disclaimer, I’m passionate about the work at NASA so I always aim to take what I’m leaning in my courses and apply it to NASA. I digress. Two of the most publicly visible applications for NASA are: (1) 3d printer for tools and parts for crewed space exploration and (2) 3d food printer. I hope to explore NASA related 3d printing topics as the semester progresses.

Chapter 1
The first thing that got me really excited about Fabricated was the author introductions and the quickness in which the book was written (9 months). The book is written by dual authors, each with a different background and thereby showcasing different perspectives.  The first author is Hod Lipson. Mr. Lipson is a professor of engineering and his research revolves around robotics and manufacturing (among other topics). The other author, Melba Kurman, is a “technology writer, analyst and popular blogger”. The book introduction indicates that her exposure to additive manufacturing is (at the time of publishing) only 2 years young. I bring these two things up for a reason (Mr. Lipson’s engineering background and Ms. Kurman’s short experience). While we can consider Mr. Lipson’s background and experience to label him as an expert on the topic, Ms. Kurman’s lack of experience in 3d printing and background as a journalist is of immense worth in this book. When we discover new things, there tends to be an elevated level of excitement. The first chapter of Fabricated is filled with a wonderful romanticized narrative of the future potential of additive manufacturing. It’s as if Ms. Kurman discovered some of the fascinating possibilities right before sitting down to type them for us. Add to this the fact that the entire book was written in only 9 months. It is a sad truth that we sometimes become jaded and excitement over new things tends to erode with time. The quickness in which this book was written, I believe, was also an important key in capturing the excitement of this fast growing field. When introducing the public to a new frontier of possibility, it is important to convey the excitement and wonder that it encompasses.
Chapter 2
Even though I’ve had some exposure to 3d printing before this book, in the first few chapters I discovered many amazing new things. In the interest of keeping this blog as reflective as possible, as to not accidentally replicate the assigned reading, I’ve narrowed down what struck me the most to the section on multi-material 3d printing and control of composition found in Chapter 2. To me, this is one of the key areas for 3d printing to truly change the landscape of the world of “things”.  Though the section is only about 2 pages long (covering many topics) the one that jumped at me the most was the blurb about electronic circuits. I suspect the book may go into further detail in the later chapters as the applications have the potential to be revolutionary. Traditionally, electronic circuits are manufactured in multiple steps using all sorts of different materials. At the core is the board itself, usually coated in a number of different chemicals. Then there are electronic components which have to be carefully soldered on. The components themselves vary greatly in composition and application. While most circuit design is modeled in computers, real life prototypes have to be created to test in real world applications. All of these processes could be facilitated, and potentially significantly improved with 3d printers capable of creating electronic circuits and components. Not only could this lead to rapid prototyping of electronics, but it could also substantially change the nature of the design of electrical components and circuits. Electronics are usually designed, manufactured, and assembled flat. With additive manufacturing, electronics are no longer bound to a 2d design.
Chapter 3
There were several ideas in this chapter that resonated with me. One was the ability to scan existing objects in order to replicate them, and second was the discussion on mass production versus artisan production. The first topic, scanning existing objects, seems simultaneously incredibly controversial and insanely practical. As a builder of model airplanes and model rockets there have been many times when I buy a vintage set that is either missing parts, or the parts themselves are too brittle due to age. Scanning parts, and also having access to a library of design files for rare parts/components would be of incredible value. Not just for model airplanes or model rockets, but really for a any industry. It could even lead to reducing the problems associated with e-waste as people could repair their gadgets easily instead of having to buy new ones. The controversy here is the potential for piracy. If someone can just scan an object and replicate it, how do you regulate people doing this to pirate items?
Chapter 4
Every time I brainstorm for a business idea for this class, it bears a striking resemblance to Shapeways. As per the book, “Shapeways is a web-based community/market place that hosts storefronts for designers and 3d prints things for customers who send in a design file”. Shapeways is the closest I’ve come to 3d printing as a consumer. In the world of model rockets and model airplanes, there are many add-ons you can add to existing kits. Many of these are made by independent designers. Recently there as been a surge of these types of products on Shapeways and I’ve had a few on my wish list. What I don’t like about Shapeways, which I believe is temporary since the industry has yet to mature, is that the things offered on the site vary greatly. There is no curation of products. I would prefer there be a separate store front for speciality products (like rare parts for kits/components etc) separate from a storefront that sells grocery bag holders. Perhaps as the industry matures, and more entrants come to the market, speciality shops will spring up accordingly.
Now time for some serendipity. As of writing this blog entry, I received an email notification of the latest issue of NASA GSFC’s Cutting Edge magazine. Click here to access the PDF.  In it there is a special article on some of NASA’s internal efforts of using additive manufacturing to improve electronics on spacecraft. Because of additive manufacturing’s ability to produce small and intricate shapes, not available in traditional injection molding methods, special  electronic components used for cooling can be created that reduce the mass, weight and space within spacecraft components. Currently existing technology requires mechanical pumps to help cool electrical components on spacecraft. These mechanical pumps tend to consume a lot of real estate and resources on the spacecraft. Not to mention they are also heavy. In the space business heavy is bad as it demands more resources for launching into space and placing it in orbit. The article also mentions a special sounding-rocket mission done in collaboration with university funded research, that flew recently which contained 3d printed parts. Some of the students that participated in that project were in my summer 2013 cohort. While the experiment only contained two types of 3d printed components (battery compartment and the cooling mechanism inside), you can see the flat 2d non-3d-printed circuit board.
NASA Sounding Rocket Student Project
Going forward some of the topics related to additive manufacturing that I’m interested in learning more about are (1) prosthetics (particular for children, since they are constantly growing, they need replacement prosthetics more quickly than adults) and (2) applications in space exploration (such as a space bound 3d printer, or 3d printers for very highly articulate components).
Sources and Additional Recommended Links
http://www.ted.com/talks/hod_lipson_builds_self_aware_robots.html
http://gsfctechnology.gsfc.nasa.gov/3DManufacturing.html