Archive for the ‘3D printing’ category: Page 2

Aug 19, 2021

Scientists 3D Print Living, Viable Brain Tumor, to Practice Killing It

Posted by in categories: 3D printing, biotech/medical, neuroscience

A team of mad scientists successfully 3D-printed out a living, “viable” glioblastoma tumor — the deadliest kind of brain cancer — for the express purpose of learning how to kill it.

Practice makes perfect!

Aug 15, 2021

NASA’s latest space station cargo includes a 3D printing system for lunar soil

Posted by in categories: 3D printing, habitats, space

NASA has edged one step closer to building Moon and Mars colonies using the celestial bodies’ soil. Universe Today notes that NASA’s latest International Space Station resupply mission included a machine meant to demonstrate 3D printing regolith (that is, loose soil or rock) on the Moon and similar extraterrestrial surfaces.

The Redwire Regolith Print (RRP) project will work in tandem with an existing printer system (ManD) to try 3D printing simulated regolith. If that succeeds, the ISS crew will gauge the strength of the resulting material to see if it can handle the harsh conditions beyond Earth.

If all goes well, RRP could lead to colonists printing at least some of their habitats on-demand. That, in turn, could reduce the volume of construction supplies NASA brings to the Moon and Mars. Scientists have envisioned soil-based habitats for years, but this test is relatively realistic — it’s an attempt at 3D printing soil in lower gravity. While there will still be much work to do, the long-term goals for Artemis and future Mars missions may be that much more achievable.

Aug 11, 2021

Could We Explore the Entire Galaxy With Self-Replicating Robots?

Posted by in categories: 3D printing, environmental, nuclear energy, physics, robotics/AI, solar power, space, sustainability

Circa 2016

Scientists and engineers since the 1940s have been toying with the idea of building self-replicating machines, or von Neumann machines, named for John von Neumann. With recent advances in 3D printing (including in zero gravity) and machine learning AI, it seems like self-replicating machines are much more feasible today. In the 21st century, a tantalizing possibility for this technology has emerged: sending a space probe out to a different star system, having it mine resources to make a copy of itself, and then launching that one to yet another star system, and on and on and on.

As a wild new episode of PBS’s YouTube series Space Time suggests, if we could send a von Neumann probe to another star system—likely Alpha Centauri, the closest to us at about 4.4 light years away—then that autonomous spaceship could land on a rocky planet, asteroid, or moon and start building a factory. (Of course, it’d probably need a nuclear fusion drive, something we still need to develop.)

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Aug 10, 2021

3D-printed hearts with ‘beating’ tissue could ease organ donor shortage

Posted by in categories: 3D printing, biotech/medical

O,.o circa 2019.

Harvard scientists used living human cells to 3D-print functional heart tissue for an artificial heart, which could help ease donor organ shortages.

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Aug 10, 2021

Scientists 3D Print Mouse Ovaries That Actually Make Babies

Posted by in categories: 3D printing, biotech/medical

O,.o circa 2,017 woah o.o!!!

Researchers used “tissue as ink” to squirt out ovaries that successfully grew mouse pups.

Aug 4, 2021

How I 3D Printed a Metal Aerospike Rocket at Home

Posted by in category: 3D printing

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Tree Killer: @I did a thing.

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Aug 3, 2021

Hands to print | Russian tech firm gifts kid with 3D-printed arms

Posted by in categories: 3D printing, biotech/medical, cyborgs

A Skolkovo tech company presents its 3D printing production technology for prosthetic limbs.

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Jul 31, 2021

Switching from Injection Molding to 3D Printing Cut Costs 95%

Posted by in categories: 3D printing, space

Mercury Systems speeds up PCB manufacturing by replacing a costly injection molded tools with in-house designed and 3D printed versions.

Jul 29, 2021

3D-Printed Tooling Enables DIY Electrochemical Machining

Posted by in categories: 3D printing, chemistry

When it comes to turning a raw block of metal into a useful part, most processes are pretty dramatic. Sharp and tough tools are slammed into raw stock to remove tiny bits at a time, releasing the part trapped within. It doesn’t always have to be quite so violent though, as these experiments in electrochemical machining suggest.

Electrochemical machining, or ECM, is not to be confused with electrical discharge machining, or EDM. While similar, ECM is a much tamer process. Where EDM relies on a powerful electric arc between the tool and the work to erode material in a dielectric fluid, ECM is much more like electrolysis in reverse. In ECM, a workpiece and custom tool are placed in an electrolyte bath and wired to a power source; the workpiece is the anode while the tool is the cathode, and the flow of charged electrolyte through the tool ionizes the workpiece, slowly eroding it.

The trick — and expense — of ECM is generally in making the tooling, which can be extremely complicated. For his experiments, [Amos] took the shortcut of 3D-printing his tool — he chose [Suzanne] the Blender monkey — and then copper plating it, to make it conductive. Attached to the remains of a RepRap for Z-axis control and kitted out with tanks and pumps to keep the electrolyte flowing, the rig worked surprisingly well, leaving a recognizably simian faceprint on a block of steel.

Jul 27, 2021

World’s first unreinforced 3D-printed concrete bridge displayed in Venice

Posted by in categories: 3D printing, materials

A first-of-its-kind 3D-printed concrete bridge has been unveiled in Venice, Italy. The bridge is a demonstration of a new 3D printing method resulting in a structure requiring no mortar or steel reinforcement.

The bridge was developed as part of a collaboration between ETH Zurich and Zaha Hadid Architects’ Computation and Design Group. The unreinforced structure was created by 3D-printing concrete blocks using a novel type of concrete ink produced by a company called Holcim.

“This precise method of 3D concrete printing allows us to combine the principles of traditional vaulted construction with digital concrete fabrication to use material only where it is structurally necessary without producing waste,” explains Philippe Block, a researcher from ETH Zurich.

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