Hasta La Gadget!

We’ve seen the recent fully 3D-printed handgun, the Liberator, make an appearance with the ability to shoot off eight .380 rounds before the barrel needed replacing. As interesting as that sounds, a few folks weren’t impressed. They look things one step further and 3D-printed a shotgun slug that completely works, firing from a shotgun and all.

The slugs were shot from a Mossberg 590 12-gauge shotgun. The first two slugs both hit their intended targets that were set around 30 feet away, and while the slugs’ lightweight form don’t carry as much force as a heavier actual shotgun slug, the 3D-printed slug penetrated completely through a dart board, as well as a water jug sitting behind it. The slug was also able to blast through a 2×12 piece of pine wood.

The slugs used in the video are the larger variants that gun enthusiast Jeff Heeszel has designed, saying that they take about an hour each to print using a Solidoodle 3 3D printer (which costs around $800) using ABS thermoplastic. Heeszel used a non-printed slug as a template to create the 3D files for the printed versions.

Heeszel got the idea from the recently-printed Liberator handgun, but he didn’t like the idea of a plastic gun shooting real bullets, and instead wanted to shoot plastic bullets with a real gun. Heeszel says that the slugs weigh about 0.4 ounces, but only after adding a lead point to add a bit of weight to it. Otherwise, the slug would only weigh a mere 0.1 ounces.

Apparently it took Heeszel hours to set up the 3D printer in order for it to print the slug in the right shape. He also had issues with the printer’s heated bed, which caused the slugs to warp as new layers were added. To remedy that, Heeszel had to paint a slurry mix to the printer’s bed to prevent warping. This alone took around 30 to 40 hours just to come up with the right paint mix.

VIA: Wired

3D-printed shotgun slugs appear, one-ups Liberator handgun is written by Craig Lloyd & originally posted on SlashGear.
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You may have seen and heard about the Liberator, a fully 3D-printed gun that earned the “world’s first” moniker and was created by law student. However, one of the setbacks was that it could only fire one shot before the plastic destroyed itself. However, a new modified version of the Liberator has appeared, and it

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For a technology that’s still largely in its infancy, you can do some things with 3D printing that are pretty much impossible with any other technique. Take, for instance, these intricate 3D-printed mobiles.

Designed by kinetic sculptor Marco Mahler, along with mathematician Henry Segerman, these mobiles are unlike handmade mobiles you might have seen before.

Each one was designed using mathematical equations to generate shapes that range from organic to highly procedural in style. The most complex of the bunch is the Quaternary Tree (Level 6), which has a whopping 1,365 parts. Each model was then output using one of Shapeways’ industrial laser-sintering 3D printers.

Best of all, you can order a variety of these mobiles for yourself over at Shapeways. Since each one is made to order, it’ll take about 1 to 2 weeks to generate and then ship yours. Prices range from $10 (USD) for a small, simple mobile up to $600 for the most complex design.

It still blows my mind that a single 3D printing session can generate complex forms like these in which individual parts come out as separate, moveable objects.

Joshua Pearce, PhD, is a researcher at Michigan Tech who rearches open source and low-impact solutions to engineering problems. He is also the founder of the Printers For Peace contest, an effort to bring together clever 3D-printed ideas that have loftier aims. You can win one of two 3D printers if you submit a winning project.

We asked Pearce a few questions about his goals for the project and about the future of 3D printing.

John Biggs: Why Printers For Peace?

Joshua Pearce: I think it is clear that low-cost open-source 3D printing has enormous potential to do real good for the world – particularly for the poor as it radically reduces the cost of high-value products like scientific tools and consumer goods. This threatens a lot of entrenched interests because the average Joe can fabricate extremely complex products at home for pennies, which is disruptive to say the least. I have noticed a clear bias in 3D printing news coverage – any advances on the low-end of the spectrum are generally ignored or vilified. The media frenzy about 3D printed guns is actually having terrifying consequences – and I don’t mean the guns. A California senator has already proposed registration, background checks, and licensing for 3D printers!

Michigan Tech and Type A Machines sponsored the contest to get the more positive truth about 3D printers into the conversation. There are over 90,000 open-source 3D printable designs available and only one low-quality gun. We do not want to lose the baby with the bathwater. Our aim is to raise awareness of the power of 3D printing to change the world for the better.

JB: What do you think will happen now that the 3D printed gun is out of the bag? It was inevitable, obviously, but what does it mean?
JP: The 3D printed gun is a red herring. Anyone who wants a gun can make a much better one using more traditional tools found in any machine shop and many garages — or just buy one. I am, however, very concerned that the debate about 3D printed guns will be used to squash the incredible technological development we are seeing in the open-source 3D printing community.

JB: What’s the coolest Printers for Peace project you’ve seen so far?

JP: The contest just opened, but there are some really cool designs already developed that I think would make good starting points for derivatives. I really like some of the small-scale 3D printed windmill designs – and there is a graduate student working on what looks to be a printable recyclebot. I would love to see a reliable 3D printed treadle pump as this is one of the most successful appropriate technologies for lifting rural farmers out of poverty in the developing world.

JB: What’s next? 3D printed bazookas? 3D printed heart stents? Where do you see this headed, in either direction?

JP: I think it is clear that existing manufacturers will continue to move from using high-end 3D printing for rapid prototyping into actual manufacturing creating entirely new classes of jobs (e.g. automobile parts, human body parts, etc.). This is exciting, but not nearly as exciting as what is happening on the low-end of the spectrum. As open-source 3D printable designs continue to grow exponentially the value of owning a 3D printer is climbing as their quality improves and actual costs continue to decline. Thus, low-cost open-source 3D printers will become ubiquitous household items, which people use to make a wide array of consumer goods, replacement parts, and highly customized products. Following shortly after I hope to see recyclebots become similarly widespread – with people recycling their waste plastic inhome to make their own products. The implications for improving human well-being are staggering.

If Google Glass takes off, I think that it’s going to be a status symbol miles above any (current) gadget. The reason is obvious: the damned thing sits on your face, fully visible for everyone to see/want/hate. If you want to get on the hype train early – or if you want to try and build your own wearable computer – you can 3D print this unofficial 3D model of Google Glass’ frame.

The 3D model was made by Sunny Gao, shown above wearing the resulting 3D printed frame.

Gao uploaded the template as a Google SketchUp file; you can download it from his Baidu account if you wish. Now practice saying, “Okay Glass… damn it’s out of battery”, and you’re good to go.

[via Sunny Gao via SolidSmack & The Next Web]