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3D printing (view source)

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Food can be 3D printed. Lots of different foods can be printed, like chocolate and candy, and also flat foods such as crackers, pasta, and pizza.<ref>{{Cite web|url=https://futurism.com/nasa-astronauts-can-now-3d-print-pizzas-in-space|title=NASA Astronauts Can Now 3D-Print Pizzas in Space|website=Futurism|language=en|access-date=December 3, 2019}}</ref> NASA is printing food to create less waste and to make food that has all the right nutrients for astronauts.<ref>{{Cite web|url=http://www.nasa.gov/directorates/spacetech/home/feature_3d_food.html|title=3D Printing: Food in Space|last=Hall|first=Loura|date=June 7, 2013|website=NASA|language=en|access-date=December 3, 2019|archive-date=March 4, 2020|archive-url=https://web.archive.org/web/20200304230157/https://www.nasa.gov/directorates/spacetech/home/feature_3d_food.html|url-status=dead}}</ref> In 2018, [[:en:Giuseppe_Scionti|Giuseppe Scionti]] printed a food that was similar to meat.<ref>{{Cite web|url=https://3dprinting.com/news/researchers-develop-plant-based-steak-printing-method/|title=Researchers Develop Plant Based Steak Printing Method|date=September 28, 2018|website=3D Printing|language=en-US|access-date=December 3, 2019}}</ref>[[File:3D Printed Ancient Egyptian Figurine 1.png|thumb|3D printed Egyptian Pharaoh for sale on Threeding |alt=]]

== Guns ==

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In 2012, [[Defense Distributed]] uploaded files to the internet for a [[:en:3D_printed_firearm|3D printed gun]] "that could be downloaded and reproduced by anybody with a 3D printer". After Defense Distributed released their plans, people were worried that they may cause problems with [[gun control]]{{cn}} A year later, in May 2013, the US State Department asked [[Defense Distributed]] to take down the plans, which they did.<ref>{{Cite web|url=https://www.theatlantic.com/national/archive/2013/05/state-department-defense-distributed-3d-printed-gun-plans/315405/|title=State Department Asks Defense Distributed to Take Down Its 3D-Printed Gun Plans|last=Bump|first=Philip|date=May 9, 2013|website=The Atlantic|language=en-US|access-date=November 22, 2019}}</ref>

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In 2012, [[Defense Distributed]] uploaded files to the internet for a [[:en:3D_printed_firearm|3D printed gun]] "that could be downloaded and reproduced by anybody with a 3D printer". After Defense Distributed released their plans, people were worried that they may cause problems with [[gun control]]{{cn}} A year later, in May 2013, the [[U.S. state|US State]] Department asked [[Defense Distributed]] to take down the plans, which they did.<ref>{{Cite web|url=https://www.theatlantic.com/national/archive/2013/05/state-department-defense-distributed-3d-printed-gun-plans/315405/|title=State Department Asks Defense Distributed to Take Down Its 3D-Printed Gun Plans|last=Bump|first=Philip|date=May 9, 2013|website=The Atlantic|language=en-US|access-date=November 22, 2019}}</ref>

'''Education'''

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3D printing has increased innovation and problem-solving in classrooms. Design students can use it to print prototypes in subjects such as engineering 3D printing; demonstrations of this have already been deployed throughout some institutions around the world.

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3D printing has increased [[innovation]] and problem-solving in classrooms. Design students can use it to print prototypes in subjects such as engineering 3D printing; demonstrations of this have already been deployed throughout some institutions around the world.

== Historical ==

In the last several years 3D printing has been used to make sure that important things from history are safe.<ref>{{Cite journal|last1=Scopigno|first1=R.|last2=Cignoni|first2=P.|last3=Pietroni|first3=N.|last4=Callieri|first4=M.|last5=Dellepiane|first5=M.|title=Digital Fabrication Techniques for Cultural Heritage: A Survey: Fabrication Techniques for Cultural Heritage|url=http://doi.wiley.com/10.1111/cgf.12781|journal=Computer Graphics Forum|date=January 2017 |language=en|volume=36|issue=1|pages=6–21|doi=10.1111/cgf.12781|s2cid=26690232}}</ref> Many museums have bought 3D printers and are making pieces to fix their relics.<ref>{{Cite web|url=http://www.3ders.org/articles/20150714-museum-uses-3d-printing-to-take-fragile-maquette-by-thomas-hart-benton-on-tour.html|title=3ders.org - Museum uses 3D printing to take fragile maquette by Thomas Hart Benton on tour through the States {{!}} 3D Printer News & 3D Printing News|date=November 17, 2015|archive-url=https://web.archive.org/web/20151117014241/http://www.3ders.org/articles/20150714-museum-uses-3d-printing-to-take-fragile-maquette-by-thomas-hart-benton-on-tour.html|access-date=November 22, 2019|archive-date=2015-11-17}}</ref> The [[Metropolitan Museum of Art]] and the [[British Museum]] have started using their 3D printers to make replicas to sell in the gift shop.<ref>{{Cite web|url=http://www.independent.co.uk/life-style/gadgets-and-tech/british-museum-releases-scans-of-artefacts-to-let-you-3d-print-your-own-museum-at-home-9837654.html|title=British Museum releases 3D printer scans of artefacts|date=November 4, 2014|website=The Independent|language=en|access-date=November 22, 2019}}</ref> The National Museum of Military History and Varna Historical Museum sell digital versions of their items online, which everyone can 3D print at home.<ref>{{Cite web|url=https://3dprint.com/45699/threeding-artec-museum/|title=Threeding Uses Artec 3D Scanning Technology to Catalog 3D Models for Bulgaria's National Museum of Military History|last=O'Neal|first=Bridget|date=2015-02-20|website=3DPrint.com}}</ref>

== 3D Printing Noise ==

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3d printers do produce noise as its operation involves a lot of vibration. The University of Michigan<ref>{{Cite web|title=Harmful Noise Levels {{!}} Michigan Medicine|url=https://www.uofmhealth.org/health-library/tf4173#:~:text=A%20sound%27s%20loudness%20is%20measured,concert%20is%20about%20120%20dB.|access-date=2022-07-17|website=www.uofmhealth.org}}</ref> shown how much sound does a 3d printer may produce. Their research shows that sounds more than 85 DB is harmful for human. However, the good 3d printers with silent motherboard may limit the noise up to 55 DB. Still there are plenty of manufacturers who could not even identify the best way of reducing 3D printer's noise. But, there are some techniques that can help you to identify the quiet 3d printers<ref>{{Cite web|last=Heer_Alina|date=2022-06-29|title=What makes a 3D Printer Noisy|url=https://www.digthisout.com/best-quiet-3d-printer/|access-date=2022-07-17|website=Dig This Out|language=en-US}}</ref> and prepare yourself to reduce the noise at a substantial level.

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3d printers do produce noise as its operation involves a lot of vibration. The University of Michigan<ref>{{Cite web|title=Harmful Noise Levels {{!}} Michigan Medicine|url=https://www.uofmhealth.org/health-library/tf4173#:~:text=A%20sound%27s%20loudness%20is%20measured,concert%20is%20about%20120%20dB.|access-date=2022-07-17|website=www.uofmhealth.org}}</ref> shown how much sound does a 3d printer may produce. Their research shows that sounds more than 85 DB is harmful for human. However, the good 3d printers with silent [[motherboard]] may limit the noise up to 55 DB. Still there are plenty of manufacturers who could not even identify the best way of reducing 3D printer's noise. But, there are some techniques that can help you to identify the quiet 3d printers<ref>{{Cite web|last=Heer_Alina|date=2022-06-29|title=What makes a 3D Printer Noisy|url=https://www.digthisout.com/best-quiet-3d-printer/|access-date=2022-07-17|website=Dig This Out|language=en-US}}</ref> and prepare yourself to reduce the noise at a substantial level.

There are plenty of things to consider such as fan size and its rotation, stepper motor and the stepper drivers' performance etc. However, the noise may also arise due to dust clogged in the extruder or lack of maintenance.

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