3D printing technology news

bobbymike

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Print some nukes ;)
 

riggerrob

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Next year's fashion in home 3D printers will print on conveyor belts, allowing plastic parts of infinite length or semi production line rates.
 

bobbymike

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Grey Havoc

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Challenged by the Army’s emerging NGCV requirements, the Army Research Laboratory is now working to engineer and build new, lightweight yet survivable vehicle parts such as brackets, turret components, propulsion systems and weapons, using “additive manufacturing” or 3D printing technology. In particular, the effort includes the exploration of lightweight metals such as titanium, titanium alloys and hybrid ceramic tile/polymer-matrix composites.


“Titanium is lightweight and has a specific strength to weight ratio. Titanium is half the weight of other metals currently in use," Dr. Brandon A. McWilliams, Materials Engineer, Lead for Metals Added Manufacturing, Army Research Lab, Combat Capabilities Development Command, Army Futures Command, told Warrior in an interview, Aberdeen Proving Ground, Md. "With additive manufacturing, the costs can come down and make business sense.”

Certain elements of lower-cost titanium have already been in use for several armored vehicle applications such as up-armor for the Abrams tanks and the Commander’s Hatch in the Bradley Infantry Fighting Vehicle. However, this integration has been minimal and largely peripheral. Army engineers working on future combat vehicles are now calling for more titanium for large and vital elements in combat vehicles, in part because 3-D printing can deliver it in a more efficient, lower-cost fashion.

Interestingly, using more titanium for military vehicles is emphasized and anticipated in a 1997 essay, entitled “Low-Cost Titanium Armors for Combat Vehicles.” The essay, published in JOM, states “future-vehicle hull and turret will have to be manufactured using more ballistically efficient materials than rolled homogeneous steel armor. Low-cost titanium, with its good mechanical, ballistic, and corrosion properties and acceptable fabricability, offers the overall best alternative to achieving this objective.”

One major howler in the article though (highlighted by me):
This was published years before “additive manufacturing” existed. Unlike traditional or more standard manufacturing techniques, new combinations of materials can be explored, or even created, using computer modeling as the essential step prior to printing parts with 3-D printing.

Additive Manufacturing (then better known as Laser Sintering) was around during the 1980s (NASA for example was a major pioneer in this area).
 

Grey Havoc

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Grey Havoc

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With a worldwide shortage of hospital equipment such as ventilators and protective gear for medical workers, organisations, educational institutions and individuals have been joining the effort to meet the demand.

In the UK, around 1,400 3D-printer owners have pledged to use their machines to help make face masks for the NHS.
 

bobbymike

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riggerrob

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Back in 2018 and 2019, 3D printer manufaturers promised us home machines that could print items of infinite length on conveyor belts.
When will they go on sale?
 

Richard N

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I've seen 3D conveyor printers on YouTube vids at recent printer conventions. At the rate new printers are coming out, it shouldn't be long.

For commercial conveyor printers, it would allow manufacturing of bars of materials with differing tailored material characteristics along their length. Printed spars could have stronger materials at the wing roots and only as strong and light as needed at the wingtips.
 

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[URL unfurl = "true"] https://www.popularmechanics.com/military/navy-ships/a32744310/submarine-cold-spray-printing/ [/ URL]
 

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fredymac

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Velo3D makes a metal printer that doesn't need "support" braces that have to be machined off the finished part and allows overhang geometries beyond 45 degrees.


 

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