Sunday, April 30, 2017

3D printing - Wikipedia

  1. I thought you might want to see how much 3D printing has changed in 3 or 4 years since I first started blogging about it.Around 2014 I heard about how they were making ball joints for hip replacements in I think it was Sweden using Sintering which is a 3d vaccum process with a laser to melt in a specific way the powdered metal as titanium into a hip replacement custom made to whoever's body that needs it on the spot. I was pretty amazed by this. today I saw a fan for a fan jet made from the 3d process and was amazed by this. Also, the octobot is also made with some type of 3d Printer as well using fluidics as a basis in physics to create almost or completely this octobot which is an autonomous robot (autonomous only means completely self directed in regard to all decision making).

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    3D printing - Wikipedia

    en.wikipedia.org/wiki/3D_pri...
    3D printing, also known as additive manufacturing (AM), refers to processes used to create a three-dimensional object in which layers of material are ...
  2. Construction 3D printing - Wikipedia

    en.wikipedia.org/wiki/Construction_...
    Construction 3D Printing refers to various technologies that use 3D printing as a core method to fabricate buildings or construction components.
  3. 3D printing processes - Wikipedia

    en.wikipedia.org/wiki/3D_pri...
    3D printing is also known as additive manufacturing, therefore the numerous available 3D printing processes tend to be additive in nature with a few key differences.
  4. 3D bioprinting - Wikipedia

    en.wikipedia.org/wiki/3D_bio...
    3D bioprinting is the process of creating cell patterns in a confined space using 3D printing technologies, where cell function and viability are preserved ...
  5. Category:3D printing - Wikipedia

    en.wikipedia.org/wiki/Category:3D</...
    Pages in category "3D printing" The following 43 pages are in this category, out of 43 total. This list may not reflect recent changes . ... 

    3D printing

    From Wikipedia, the free encyclopedia
    For methods of applying a 2D and 3D image onto a 3D Build surface, see pad printing. For methods of copying 2D parallax stereograms that seem 3D to the eye, see lenticular printing and holography.

    A MakerBot three-dimensional printer.
    3D printing, also known as additive manufacturing (AM), refers to processes used to create a three-dimensional object[1] in which layers of material are formed under computer control to create an object.[2] Objects can be of almost any shape or geometry and are produced using digital model data from a 3D model or another electronic data source such as an Additive Manufacturing File (AMF) file.
    The futurologist Jeremy Rifkin[3] claimed that 3D printing signals the beginning of a third industrial revolution,[4] succeeding the production line assembly that dominated manufacturing starting in the late 19th century.
    The term "3D printing" originally referred to a process that deposits a binder material onto a powder bed with inkjet printer heads layer by layer. More recently, the term is being used in popular vernacular to encompass a wider variety of additive manufacturing techniques. United States and global technical standards use the official term additive manufacturing for this broader sense. ISO/ASTM52900-15 defines seven categories of AM processes within its meaning: binder jetting, directed energy deposition, material extrusion, material jetting, powder bed fusion, sheet lamination and vat photopolymerization.[5]

    Contents

    Terminology and methods

    Early additive manufacturing equipment and materials were developed in the 1980s.[6] In 1981, Hideo Kodama of Nagoya Municipal Industrial Research Institute invented two additive methods for fabricating three-dimensional plastic models with photo-hardening thermoset polymer, where the UV exposure area is controlled by a mask pattern or a scanning fiber transmitter.[7][8]
    On July 16, 1984 Alain Le Méhauté, Olivier de Witte, and Jean Claude André filed their patent for the stereolithography process.[9] The application of the French inventors was abandoned by the French General Electric Company (now Alcatel-Alsthom) and CILAS (The Laser Consortium).[10] The claimed reason was "for lack of business perspective".[11]
    Three weeks later in 1984, Chuck Hull of 3D Systems Corporation[12] filed his own patent for a stereolithography fabrication system, in which layers are added by curing photopolymers with ultraviolet light lasers. Hull defined the process as a "system for generating three-dimensional objects by creating a cross-sectional pattern of the object to be formed,"[13][14]. Hull's contribution was the STL (Stereolithography) file format and the digital slicing and infill strategies common to many processes today.
    The technology used by most 3D printers to date--especially hobbyist and consumer-oriented models--is fused deposition modeling, a special application of plastic extrusion, developed in 1988 by S. Scott Crump and commercialized by his company Stratasys, which marketed its first FDM machine in 1992.
    The term 3D printing originally referred to a powder bed process employing standard and custom inkjet print heads, developed at MIT in 1993 and commercialized by Z Corporation.
    The year 1993 also saw the start of a company called Solidscape, introducing a high-precision polymer jet fabrication system with soluble support structures, (categorized as a "dot-on-dot" technique).
    AM processes for metal sintering or melting (such as selective laser sintering, direct metal laser sintering, and selective laser melting) usually went by their own individual names in the 1980s and 1990s. Most metal parts are still produced by casting, fabrication, stamping, and machining, but by the mid-1990s, new techniques for material deposition were developed at Stanford and Carnegie Mellon University, including microcasting[15] and sprayed materials.[16] By 2010s, metal, end-use parts such as engine brackets[17] and large nuts[18] grown (either before or instead of machining) in job production rather than obligately being machined from bar stock or plate.
    As methods matured, sacrificial support materials and techniques become more common, enabling new object geometries.[19]
    The umbrella term additive manufacturing gained wider currency in the decade of the 2000s.[20] During this decade, the term subtractive manufacturing appeared as a retronym for the large family of machining processes with metal removal as their common theme. In this time frame, the term 3D printing referred primarily to fused deposition, polymer jetting, and other technologies, while the broader technical term additive manufacturing found use in metalworking, production, and technical standards contexts. (The term subtractive manufacturing did not replace the term machining, instead complementing finding use in technical and marketing context when contrasting machining and other material removal techniques with additive manufacturing.)
    By the early 2010s, the terms 3D printing and additive manufacturing had evolved senses in which they became alternate umbrella terms for AM technologies, one being used as a popular term by enthusiast communities and the media, and the other used by industry, government, and global technical standards organizations.
    Other terms used as synonyms, hyponyms, and hypernyms to additive manufacturing include layered fabrication, desktop manufacturing, rapid manufacturing [a successor to rapid prototyping], and on-demand manufacturing (which echoes on-demand printing).
    Agile tooling is a term used to describe modular methods for design and production of tooling by additive manufacturing or 3D printing methods to enable rapid prototyping and iteration of tooling and fixtures. It can be used in hydro-forming, stamping, injection molding, and other manufacturing processes.
    As technology matured, several authors had begun to speculate that 3D printing could aid in sustainable development in the developing world.[21][22][23]

    General principles

    Modeling

    Main article: 3D modeling
    3D printable models may be created with a computer-aided design (CAD) package, via a 3D scanner, or by a plain digital camera and photogrammetry software. 3D printed models created with CAD result in reduced errors and can be corrected before printing, allowing verification in the design of the object before it is printed.[24]

    CAD model used for 3D printing
    The manual modeling process of preparing geometric data for 3D computer graphics is similar to plastic arts such as sculpting. 3D scanning is a process of collecting digital data on the shape and appearance of a real object, creating a digital model based on it.

    Printing

    Timelapse video of a hyperboloid object (designed by George W. Hart) made of PLA using a RepRap "Prusa Mendel" 3 printer for molten polymer deposition
    Before printing a 3D model from an STL file, it must first be examined for errors. Most CAD applications produce errors in output STL files:[25][26] holes, faces normals, self-intersections, noise shells or manifold errors.[27] A step in the STL generation known as "repair" fixes such problems in the original model.[28][29] Generally STLs that have been produced from a model obtained through 3D scanning often have more of these errors.[30] This is due to how 3D scanning works-as it is often by point to point acquisition, reconstruction will include errors in most cases.[31]
    Once completed, the STL file needs to be processed by a piece of software called a "slicer," which converts the model into a series of thin layers and produces a G-code file containing instructions tailored to a specific type of 3D printer (FDM printers).[citation needed] This G-code file can then be printed with 3D printing client software (which loads the G-code, and uses it to instruct the 3D printer during the 3D printing process).
    Printer resolution describes layer thickness and X-Y resolution in dots per inch (dpi) or micrometers (µm). Typical layer thickness is around 100 µm (250 DPI), although some machines can print layers as thin as 16 µm (1,600 DPI).[32] X-Y resolution is comparable to that of laser printers. The particles (3D dots) are around 50 to 100 µm (510 to 250 DPI) in diameter.[citation needed]
    Construction of a model with contemporary methods can take anywhere from several hours to several days, depending on the method used and the size and complexity of the model. Additive systems can typically reduce this time to a few hours, although it varies widely depending on the type of machine used and the size and number of models being produced simultaneously.[33]
    Traditional techniques like injection moulding can be less expensive for manufacturing polymer products in high quantities, but additive manufacturing can be faster, more flexible and less expensive when producing relatively small quantities of parts. 3D printers give designers and concept development teams the ability to produce parts and concept models using a desktop size printer.[34]
    Seemingly paradoxic, more complex objects can be cheaper for 3D printing production than less complex objects.

    Finishing

    Though the printer-produced resolution is sufficient for many applications, printing a slightly oversized version of the desired object in standard resolution and then removing material[35] with a higher-resolution subtractive process can achieve greater precision.
    Some printable polymers such as ABS, allow the surface finish to be smoothed and improved using chemical vapor processes[36] based on acetone or similar solvents.
    Some additive manufacturing techniques are capable of using multiple materials in the course of constructing parts. These techniques are able to print in multiple colors and color combinations simultaneously, and would not necessarily require painting.
    Some printing techniques require internal supports to be built for overhanging features during construction. These supports must be mechanically removed or dissolved upon completion of the print.
    All of the commercialized metal 3D printers involve cutting the metal component off the metal substrate after deposition. A new process for the GMAW 3D printing allows for substrate surface modifications to remove aluminum[37] or steel.[38]

    Processes and printers

    Main article: 3D printing processes

    Schematic representation of the 3D printing technique known as Fused Filament Fabrication; a filament a) of plastic material is fed through a heated moving head b) that melts and extrudes it depositing it, layer after layer, in the desired shape c). A moving platform e) lowers after each layer is deposited. For this kind of technology additional vertical support structures d) are needed to sustain overhanging parts
    A timelapse video of a robot model (logo of Make magazine) being printed using FDM on a RepRapPro Fisher printer.
    A large number of additive processes are available. The main differences between processes are in the way layers are deposited to create parts and in the materials that are used. Each method has its own advantages and drawbacks, which is why some companies offer a choice of powder and polymer for the material used to build the object.[39] Others sometimes use standard, off-the-shelf business paper as the build material to produce a durable prototype. The main considerations in choosing a machine are generally speed, costs of the 3D printer, of the printed prototype, choice and cost of the materials, and color capabilities.[40] Printers that work directly with metals are generally expensive. However less expensive printers can be used to make a mold, which is then used to make metal parts.[41]
    Some methods melt or soften the material to produce the layers. In Fused filament fabrication, also known as Fused deposition modeling (FDM), the model or part is produced by extruding small beads or streams of material which harden immediately to form layers. A filament of thermoplastic, metal wire, or other material is fed into an extrusion nozzle head (3D printer extruder), which heats the material and turns the flow on and off. FDM is somewhat restricted in the variation of shapes that may be fabricated. Another technique fuses parts of the layer and then moves upward in the working area, adding another layer of granules and repeating the process until the piece has built up. This process uses the unfused media to support overhangs and thin walls in the part being produced, which reduces the need for temporary auxiliary supports for the piece.[42] Laser sintering techniques include selective laser sintering, with both metals and polymers, and direct metal laser sintering.[43] Selective laser melting does not use sintering for the fusion of powder granules but will completely melt the powder using a high-energy laser to create fully dense materials in a layer-wise method that has mechanical properties similar to those of conventional manufactured metals. Electron beam melting is a similar type of additive manufacturing technology for metal parts (e.g. titanium alloys). EBM manufactures parts by melting metal powder layer by layer with an electron beam in a high vacuum.[44][45] Another method consists of an inkjet 3D printing system, which creates the model one layer at a time by spreading a layer of powder (plaster, or resins) and printing a binder in the cross-section of the part using an inkjet-like process. With laminated object manufacturing, thin layers are cut to shape and joined together.

    Schematic representation of Stereolithography; a light-emitting device a) (laser or DLP) selectively illuminate the transparent bottom c) of a tank b) filled with a liquid photo-polymerizing resin; the solidified resin d) is progressively dragged up by a lifting platform e)
    Other methods cure liquid materials using different sophisticated technologies, such as stereolithography. Photopolymerization is primarily used in stereolithography to produce a solid part from a liquid. Inkjet printer systems like the Objet PolyJet system spray photopolymer materials onto a build tray in ultra-thin layers (between 16 and 30 µm) until the part is completed. Each photopolymer layer is cured with UV light after it is jetted, producing fully cured models that can be handled and used immediately, without post-curing. Ultra-small features can be made with the 3D micro-fabrication technique used in multiphoton photopolymerisation. Due to the nonlinear nature of photo excitation, the gel is cured to a solid only in the places where the laser was focused while the remaining gel is then washed away. Feature sizes of under 100 nm are easily produced, as well as complex structures with moving and interlocked parts.[46] Yet another approach uses a synthetic resin that is solidified using LEDs.[47] In Mask-image-projection-based stereolithography, a 3D digital model is sliced by a set of horizontal planes. Each slice is converted into a two-dimensional mask image. The mask image is then projected onto a photocurable liquid resin surface and light is projected onto the resin to cure it in the shape of the layer.[48] Continuous liquid interface production begins with a pool of liquid photopolymer resin. Part of the pool bottom is transparent to ultraviolet light (the "window"), which causes the resin to solidify. The object rises slowly enough to allow resin to flow under and maintain contact with the bottom of the object.[49] In powder-fed directed-energy deposition, a high-power laser is used to melt metal powder supplied to the focus of the laser beam. The powder fed directed energy process is similar to Selective Laser Sintering, but the metal powder is applied only where material is being added to the part at that moment.[50][51]
    As of October 2012, additive manufacturing systems were on the market that ranged from $2,000 to $500,000 in price and were employed in industries including aerospace, architecture, automotive, defense, and medical replacements, among many others. For example, General Electric uses the high-end model to build parts for turbines.[52] Many of these systems are used for rapid prototyping, before mass production methods are employed. Higher education has proven to be a major buyer of desktop and professional 3D printers which industry experts generally view as a positive indicator.[53] Libraries around the world have also become locations to house smaller 3D printers for educational and community access.[54] Several projects and companies are making efforts to develop affordable 3D printers for home desktop use. Much of this work has been driven by and targeted at DIY/Maker/enthusiast/early adopter communities, with additional ties to the academic and hacker communities.[55]

    Applications


    The Audi RSQ was made with rapid prototyping industrial KUKA robots.

    3D printed human skull from computed computer tomography data

    3D printed sculpture of the Egyptian Pharaoh Merankhre Mentuhotep shown at Threeding
    The earliest application of additive manufacturing was on the toolroom end of the manufacturing spectrum. For example, rapid prototyping was one of the earliest additive variants, and its mission was to reduce the lead time and cost of developing prototypes of new parts and devices, which was earlier only done with subtractive toolroom methods such as CNC milling, turning, and precision grinding.[56] In the 2010s, additive manufacturing entered production to a much greater extent.
    Additive manufacturing of food is being developed by squeezing out food, layer by layer, into three-dimensional objects. A large variety of foods are appropriate candidates, such as chocolate and candy, and flat foods such as crackers, pasta,[57] and pizza.[58][59]
    3D printing has entered the world of clothing, with fashion designers experimenting with 3D-printed bikinis, shoes, and dresses.[60] In commercial production Nike is using 3D printing to prototype and manufacture the 2012 Vapor Laser Talon football shoe for players of American football, and New Balance is 3D manufacturing custom-fit shoes for athletes.[60][61] 3D printing has come to the point where companies are printing consumer grade eyewear with on-demand custom fit and styling (although they cannot print the lenses). On-demand customization of glasses is possible with rapid prototyping.[62]
    In cars, trucks, and aircraft, AM is beginning to transform both (1) unibody and fuselage design and production and (2) powertrain design and production. For example:
    AM's impact on firearms involves two dimensions: new manufacturing methods for established companies, and new possibilities for the making of do-it-yourself firearms. In 2012, the US-based group Defense Distributed disclosed plans to design a working plastic 3D printed firearm "that could be downloaded and reproduced by anybody with a 3D printer."[71][72] After Defense Distributed released their plans, questions were raised regarding the effects that 3D printing and widespread consumer-level CNC machining[73][74] may have on gun control effectiveness.[75][76][77][78]
    Surgical uses of 3D printing-centric therapies have a history beginning in the mid-1990s with anatomical modeling for bony reconstructive surgery planning.[79] Patient-matched implants were a natural extension of this work, leading to truly personalized implants that fit one unique individual.[80] Virtual planning of surgery and guidance using 3D printed, personalized instruments have been applied to many areas of surgery including total joint replacement and craniomaxillofacial reconstruction with great success.[clarification needed][81] One example of this is the bioresorbable trachial splint to treat newborns with tracheobronchomalacia [82] developed at the University of Michigan. The use of additive manufacturing for serialized production of orthopedic implants (metals) is also increasing due to the ability to efficiently create porous surface structures that facilitate osseointegration. The hearing aid and dental industries are expected to be the biggest area of future development using the custom 3D printing technology.[83] In March 2014, surgeons in Swansea used 3D printed parts to rebuild the face of a motorcyclist who had been seriously injured in a road accident.[84] As of 2012, 3D bio-printing technology has been studied by biotechnology firms and academia for possible use in tissue engineering applications in which organs and body parts are built using inkjet techniques. In this process, layers of living cells are deposited onto a gel medium or sugar matrix and slowly built up to form three-dimensional structures including vascular systems.[85] Recently, a heart-on-chip has been created which matches properties of cells.[86]
    In 2005, academic journals had begun to report on the possible artistic applications of 3D printing technology.[87] As of 2012, domestic 3D printing was mainly practiced by hobbyists and enthusiasts. However, little was used for practical household applications, for example, ornamental objects. Some practical examples include a working clock[88] and gears printed for home woodworking machines among other purposes.[89] Web sites associated with home 3D printing tended to include backscratchers, coat hooks, door knobs, etc.[90]
    3D printing, and open source 3D printers in particular, are the latest technology making inroads into the classroom.[91][92][93] Some authors have claimed that 3D printers offer an unprecedented "revolution" in STEM education.[94] The evidence for such claims comes from both the low cost ability for rapid prototyping in the classroom by students, but also the fabrication of low-cost high-quality scientific equipment from open hardware designs forming open-source labs.[95] Future applications for 3D printing might include creating open-source scientific equipment.[95][96]
    In the last several years 3D printing has been intensively used by in the cultural heritage field for preservation, restoration and dissemination purposes.[97] Many Europeans and North American Museums have purchased 3D printers and actively recreate missing pieces of their relics.[98] The Metropolitan Museum of Art and the British Museum have started using their 3D printers to create museum souvenirs that are available in the museum shops.[99] Other museums, like the National Museum of Military History and Varna Historical Museum, have gone further and sell through the online platform Threeding digital models of their artifacts, created using Artec 3D scanners, in 3D printing friendly file format, which everyone can 3D print at home.[100]
    3D printed soft actuators is a growing application of 3D printing technology which has found its place in the 3D printing applications. These soft actuators are being developed to deal with soft structures and organs especially in biomedical sectors and where the interaction between human and robot is inevitable. The majority of the existing soft actuators are fabricated by conventional methods that require manual fabrication of devices, post processing/assembly, and lengthy iterations until maturity in the fabrication is achieved. To avoid the tedious and time-consuming aspects of the current fabrication processes, researchers are exploring an appropriate manufacturing approach for effective fabrication of soft actuators. Thus, 3D printed soft actuators are introduced to revolutionise the design and fabrication of soft actuators with custom geometrical, functional, and control properties in a faster and inexpensive approach. They also enable incorporation of all actuator components into a single structure eliminating the need to use external joints, adhesives, and fasteners.[101]

    Legal aspects

    Intellectual property

    See also: Free hardware
    3D printing has existed for decades within certain manufacturing industries where many legal regimes, including patents, industrial design rights, copyright, and trademark may apply. However, there is not much jurisprudence to say how these laws will apply if 3D printers become mainstream and individuals and hobbyist communities begin manufacturing items for personal use, for non-profit distribution, or for sale.
    Any of the mentioned legal regimes may prohibit the distribution of the designs used in 3D printing, or the distribution or sale of the printed item. To be allowed to do these things, where an active intellectual property was involved, a person would have to contact the owner and ask for a licence, which may come with conditions and a price. However, many patent, design and copyright laws contain a standard limitation or exception for 'private', 'non-commercial' use of inventions, designs or works of art protected under intellectual property (IP). That standard limitation or exception may leave such private, non-commercial uses outside the scope of IP rights.
    Patents cover inventions including processes, machines, manufactures, and compositions of matter and have a finite duration which varies between countries, but generally 20 years from the date of application. Therefore, if a type of wheel is patented, printing, using, or selling such a wheel could be an infringement of the patent.[102]
    Copyright covers an expression[103] in a tangible, fixed medium and often lasts for the life of the author plus 70 years thereafter.[104] If someone makes a statue, they may have copyright on the look of that statue, so if someone sees that statue, they cannot then distribute designs to print an identical or similar statue.
    When a feature has both artistic (copyrightable) and functional (patentable) merits, when the question has appeared in US court, the courts have often held the feature is not copyrightable unless it can be separated from the functional aspects of the item.[104] In other countries the law and the courts may apply a different approach allowing, for example, the design of a useful device to be registered (as a whole) as an industrial design on the understanding that, in case of unauthorized copying, only the non-functional features may be claimed under design law whereas any technical features could only be claimed if covered by a valid patent.

    Gun legislation and administration

    The US Department of Homeland Security and the Joint Regional Intelligence Center released a memo stating that "significant advances in three-dimensional (3D) printing capabilities, availability of free digital 3D printable files for firearms components, and difficulty regulating file sharing may present public safety risks from unqualified gun seekers who obtain or manufacture 3D printed guns," and that "proposed legislation to ban 3D printing of weapons may deter, but cannot completely prevent their production. Even if the practice is prohibited by new legislation, online distribution of these 3D printable files will be as difficult to control as any other illegally traded music, movie or software files."[105]
    Internationally, where gun controls are generally stricter than in the United States, some commentators have said the impact may be more strongly felt, as alternative firearms are not as easily obtainable.[106] Officials in the United Kingdom have noted that producing a 3D printed gun would be illegal under their gun control laws.[107] Europol stated that criminals have access to other sources of weapons, but noted that as the technology improved the risks of an effect would increase.[108][109] Downloads of the plans from the UK, Germany, Spain, and Brazil were heavy.[110][111]
    Attempting to restrict the distribution over the Internet of gun plans has been likened to the futility of preventing the widespread distribution of DeCSS which enabled DVD ripping.[112][113][114][115] After the US government had Defense Distributed take down the plans, they were still widely available via The Pirate Bay and other file sharing sites.[116] Some US legislators have proposed regulations on 3D printers, to prevent them being used for printing guns.[117][118] 3D printing advocates have suggested that such regulations would be futile, could cripple the 3D printing industry, and could infringe on free speech rights, with early pioneer of 3D printing Professor Hod Lipson suggesting that gunpowder could be controlled instead.[119][120][121][122][123][124][125]

    Safety

    A video on research done on printer emissions
    3D printers have been noted to be an environmental hazard due to them emitting microscopic particles and chemicals that have been linked to asthma. A National Institute for Occupational Safety and Health (NIOSH) report notes these emissions peaked a few minutes after printing started and returned to baseline levels 100 minutes after printing ended. The problem was reduced by using manufacturer-supplied covers and full enclosures, using proper ventilation, keeping workers away from the printer while wearing respirators, turning off the printer if it jammed, and using lower emission printers and filaments[126] (It must also be noted that 3D printing drastically reduces the wastage of material, resulting in less pollution, and is therefore safer for environment.)[original research?]

    Impact

    Additive manufacturing, starting with today's infancy period, requires manufacturing firms to be flexible, ever-improving users of all available technologies to remain competitive. Advocates of additive manufacturing also predict that this arc of technological development will counter globalization, as end users will do much of their own manufacturing rather than engage in trade to buy products from other people and corporations.[6] The real integration of the newer additive technologies into commercial production, however, is more a matter of complementing traditional subtractive methods rather than displacing them entirely.[127]

    Social change

    Since the 1950s, a number of writers and social commentators have speculated in some depth about the social and cultural changes that might result from the advent of commercially affordable additive manufacturing technology.[128] Amongst the more notable ideas to have emerged from these inquiries has been the suggestion that, as more and more 3D printers start to enter people's homes, the conventional relationship between the home and the workplace might get further eroded.[129] Likewise, it has also been suggested that, as it becomes easier for businesses to transmit designs for new objects around the globe, so the need for high-speed freight services might also become less.[130] Finally, given the ease with which certain objects can now be replicated, it remains to be seen whether changes will be made to current copyright legislation so as to protect intellectual property rights with the new technology widely available.
    As 3D printers became more accessible to consumers, online social platforms have developed to support the community.[131] This includes websites that allow users to access information such as how to build a 3D printer, as well as social forums that discuss how to improve 3D print quality and discuss 3D printing news, as well as social media websites that are dedicated to share 3D models.[132][133][134] RepRap is a wiki based website that was created to hold all information on 3d printing, and has developed into a community that aims to bring 3D printing to everyone. Furthermore, there are other sites such as Pinshape, Thingiverse and MyMiniFactory, which were created initially to allow users to post 3D files for anyone to print, allowing for decreased transaction cost of sharing 3D files. These websites have allowed greater social interaction between users, creating communities dedicated to 3D printing.
    Some call attention to the conjunction of Commons-based peer production with 3D printing and other low-cost manufacturing techniques.[135][136][137] The self-reinforced fantasy of a system of eternal growth can be overcome with the development of economies of scope, and here, society can play an important role contributing to the raising of the whole productive structure to a higher plateau of more sustainable and customized productivity.[135] Further, it is true that many issues, problems, and threats arise due to the democratization of the means of production, and especially regarding the physical ones.[135] For instance, the recyclability of advanced nanomaterials is still questioned; weapons manufacturing could become easier; not to mention the implications for counterfeiting[138] and on IP.[139] It might be maintained that in contrast to the industrial paradigm whose competitive dynamics were about economies of scale, Commons-based peer production 3D printing could develop economies of scope. While the advantages of scale rest on cheap global transportation, the economies of scope share infrastructure costs (intangible and tangible productive resources), taking advantage of the capabilities of the fabrication tools.[135] And following Neil Gershenfeld[140] in that "some of the least developed parts of the world need some of the most advanced technologies," Commons-based peer production and 3D printing may offer the necessary tools for thinking globally but acting locally in response to certain needs.
    Larry Summers wrote about the "devastating consequences" of 3D printing and other technologies (robots, artificial intelligence, etc.) for those who perform routine tasks. In his view, "already there are more American men on disability insurance than doing production work in manufacturing. And the trends are all in the wrong direction, particularly for the less skilled, as the capacity of capital embodying artificial intelligence to replace white-collar as well as blue-collar work will increase rapidly in the years ahead." Summers recommends more vigorous cooperative efforts to address the "myriad devices" (e.g., tax havens, bank secrecy, money laundering, and regulatory arbitrage) enabling the holders of great wealth to "avoid paying" income and estate taxes, and to make it more difficult to accumulate great fortunes without requiring "great social contributions" in return, including: more vigorous enforcement of anti-monopoly laws, reductions in "excessive" protection for intellectual property, greater encouragement of profit-sharing schemes that may benefit workers and give them a stake in wealth accumulation, strengthening of collective bargaining arrangements, improvements in corporate governance, strengthening of financial regulation to eliminate subsidies to financial activity, easing of land-use restrictions that may cause the real estate of the rich to keep rising in value, better training for young people and retraining for displaced workers, and increased public and private investment in infrastructure development—e.g., in energy production and transportation.[141]
    Michael Spence wrote that "Now comes a … powerful, wave of digital technology that is replacing labor in increasingly complex tasks. This process of labor substitution and disintermediation has been underway for some time in service sectors—think of ATMs, online banking, enterprise resource planning, customer relationship management, mobile payment systems, and much more. This revolution is spreading to the production of goods, where robots and 3D printing are displacing labor." In his view, the vast majority of the cost of digital technologies comes at the start, in the design of hardware (e.g. 3D printers) and, more important, in creating the software that enables machines to carry out various tasks. "Once this is achieved, the marginal cost of the hardware is relatively low (and declines as scale rises), and the marginal cost of replicating the software is essentially zero. With a huge potential global market to amortize the upfront fixed costs of design and testing, the incentives to invest [in digital technologies] are compelling." Spence believes that, unlike prior digital technologies, which drove firms to deploy underutilized pools of valuable labor around the world, the motivating force in the current wave of digital technologies "is cost reduction via the replacement of labor." For example, as the cost of 3D printing technology declines, it is "easy to imagine" that production may become "extremely" local and customized. Moreover, production may occur in response to actual demand, not anticipated or forecast demand. Spence believes that labor, no matter how inexpensive, will become a less important asset for growth and employment expansion, with labor-intensive, process-oriented manufacturing becoming less effective, and that re-localization will appear in both developed and developing countries. In his view, production will not disappear, but it will be less labor-intensive, and all countries will eventually need to rebuild their growth models around digital technologies and the human capital supporting their deployment and expansion. Spence writes that "the world we are entering is one in which the most powerful global flows will be ideas and digital capital, not goods, services, and traditional capital. Adapting to this will require shifts in mindsets, policies, investments (especially in human capital), and quite possibly models of employment and distribution."[142]
    Forbes investment pundits have predicted that 3D printing may lead to a resurgence of American Manufacturing, citing the small, creative companies that comprise the current industry landscape, and the lack of the necessary complex infrastructure in typical outsource markets.[143]

    See also

    References


  6. Excell, Jon. "The rise of additive manufacturing". The Engineer. Retrieved 2013-10-30.



  • Further reading

    External links

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    1 comment:

    stlfinder said...

    To make your three-dimensional projects come true, you have to run by printing on any of your 3D printers , the important thing is that you have one, on my website you will find software that you can use for all your projects.