Brute Forcing Passwords with a 3D Printer

Many of us use a 4 digit pin code to lock our phones. [David Randolph] over at Hak5 has come up a simple way to use a 3D printer to brute force these passwords. Just about every 3D printer out there speaks the same language, G-code. The same language used in CAD and CNC machines for decades.

[David] placed a numeric keypad on the bed of his printer. He then mapped out the height and positions of each key. Once he knew the absolute positions of the keys, it was easy to tell the printer to move to a key, then press and release. He even created a G-code file which would press every one of the 10,000 4 key pin combinations.

A file this large was a bit unwieldy though, so [David] also created a python script which will do the same thing — outputting the G-code and coordinates to brute force any 4 pin keypad. While a printer is quite a bit slower than Hak5’s own USB Rubber Ducky device (which acts as an automated keyboard), it will successfully brute force a password. Although most phones these days do limit the number of password attempts a user gets.

[David] admits this is probably useless in a clandestine/hacking application, but the video is still a great introduction to G-code and using 3D printers for non-printing functions.

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Interested in pushing 3D printers to print more than just plastic? You can always print chocolate.

DuPont 3D Printing Filaments are Now Available for Purchase in China

DuPont 3D Printing Filaments are Now Available for Purchase in China DuPont is pleased to announce that customers can now purchase DuPont™ Hytrel® thermoplastic elastomer and DuPont™ Zytel® nylon-based filaments for 3D printing in China through Shenzhen eSUN Industrial Co. Ltd.

DuPont 3D printing products allow users to achieve true benefits of 3D printing (greater design freedom, light weighting, reduced product development cycle times) allowing for rapid functional prototyping, parts production, tooling and customization in all sectors of the industry, such as automotive, electronics, footwear, consumer goods and others.

With Hytrel® available in two different hardness levels (Hytrel® 3D4000FL with a Shore D of 40 and Hytrel® 3D4100 with a Shore D of 60) for 3D printing, customers will be able to make flexible functional parts that combine resiliency, heat and chemical resistance with strength and durability. Mechanical properties of 3D printed parts in all directions using Hytrel® grades are comparable to injection molding. With Zytel® 3D1000FL, customers will be able to make strong and stiff functional parts. Along with superior strength, parts printed with Zytel® product also have high heat deflection temperature, low warpage, low sensitivity to moisture, and excellent surface aesthetics.

Proven over decades of use, DuPont™ Hytrel® thermoplastic elastomers and DuPont™ Zytel® nylons offer high quality, reliability and performance in various applications in a wide range of industries. For additional information on DuPont’s offerings in the 3D printing market, visit Order your Zytel® and Hytrel® products for 3D printing at Shenzhen eSUN Industrial Co., Ltd.<

“We believe that our newest 3D printing filament product offerings could meet the fast-growing 3D industry demand in China and DuPont Performance Materials is committed to become one of best partners in various industries in China spanning across automotive, electronics, footwear, consumer goods.� said Kelvin Tseng, Business Director of Greater China, DuPont Performance Materials.

About DowDuPont Specialty Products Division

DowDuPont Specialty Products, a division of DowDuPont (NYSE: DWDP), is a global innovation leader with technology-based materials, ingredients and solutions that help transform industries and everyday life. Our employees apply diverse science and expertise to help customers advance their best ideas and deliver essential innovations in key markets including electronics, transportation, building and construction, health and wellness, food and worker safety. DowDuPont intends to separate the Specialty Products Division into an independent, publicly traded company. More information can be found at

About eSUN

Established in 2002 and located in Shenzhen, Shenzhen eSUN Industrial Co., Ltd. is the leading supplier of 3D printing materials in China. In the past 10 years, it has developed 3D printing business in a wide range of market segments with comprehensive FDM (short for “Fused deposition modeling�) offerings. With new DuPont 3D printing filament product, eSUN is now able to add value to high end market sectors, e.g., automotive parts, consumer electronics, medical device, sports footwear, etc.

The DuPont Oval logo, DuPont™ and all products, unless otherwise noted, denoted with ™, ? or ® are trademarks or registered trademarks of E.I. du Pont de Nemours and Company or its affiliates.

Flink: The Latest 3D Printing Ink Powered With Bacteria [Video]

Researchers at the ETH Zurich laboratory developed a bacteria-infused ink and used it to 3D print various objects.

Led by Professor Andre Studart, ETH researchers presented a new 3D printing medium that uses live bacteria. They developed 3D printing ink that contains bacteria and made it possible to print objects without killing the bacteria in the process. These mini biochemical factories can be modified to possess certain properties, depending on which type of bacteria scientists put in the ink.

The scientists named this bacteria-powered ink medium “Flink.�

Cleaning up environmental pollution, harvesting photosynthetic energy, and making medical supplies are some of the potential uses for “Flink� according to its creators.

The new ink is made up of a hydrogel that simulates the environment, as well as contains the essential nutrients, to keep the bacteria alive. The hydrogel allows the bacteria to grow and breed. Manuel Schaffner, one of the scientists at ETH Zurich, says that once the nourishment is all used up by the bacteria, the object can simply be dipped in the hydrogel to replenish the nutrients.

Creating the perfect consistency was a challenge for the team of scientists. The stiffness of the ink will affect the bacteria’s ability to move. They needed to create the ink that is fluid enough to pass through a pressure nozzle and allow bacteria to move. The object also needed to be strong enough support the weight of the layers on top of it. The printed object might collapse if the printed object is too fluid. In the end, the substance needed to be as sticky as toothpaste and as consistent as a popular hand cream.

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Phenol is a toxic chemical that may cause conditions ranging from dermatitis to second and third-degree burns upon contact with skin. It is also harmful to the central nervous system, liver, and kidneys. One gram of this substance can be fatal to humans. The researchers 3D printed a grid infused with a breed of bacteria called Pseudomonas putida. When they placed this object in water contaminated with Phenol, the bacteria purified the water completely in a few days.

Another breed of bacteria called Acetobacter xylinum produces a gelatinous substance called bacterial cellulose. Medical practitioners use this substance for dressing wounds. The scientists 3D-printed a patch in a doll’s face and then left the material in a sealed container for a few days. ETH Zurich food scientist Patrick Rühs observed that the object’s surface produced a cellulose film. 3D-printing a cellulose patch to match the contours of body parts could prevent a wound dressing material from peeling off. Apart from that, there is also a lower possibility of wound infection due to the sealing property of the film.

Because of this, it is possible to create a breed of bacteria that produce substances according to human needs.

3D Printing Helps Jewlr Speed Production of In-Demand Meghan Markle Engagement Ring Replicas

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[Image: AP Photo, Matt Dunham]

I am one of those many Americans who is just a tiny bit (okay, maybe a lot) obsessed with the British monarchy…not the system, so much, as the royals themselves. While I was not yet born when Prince Charles married Princess Di, née Lady Diana Spencer, in 1981, I do remember the overwhelming sadness of watching her funeral procession on TV many years later. But I loved seeing pictures of the handsome princes in magazines growing up, and like many others, woke up early the day Prince William wed Kate Middleton – now Catherine, Duchess of Cambridge – to watch as much of the ceremony on TV as I could before heading into the office…and I may have tuned in once or twice from my work computer as well. So as you may expect, I was thrilled to hear of Prince Harry’s engagement to American actress Meghan Markle this week.

[Image: Chris Jackson, Getty Images]

The custom engagement ring, designed by Prince Harry, features three stones – the center one was sourced from the couple’s previous vacation destination of Botswana, and two smaller diamonds from his late mother’s private collection are nestled on either side.

I’m certain that my fascination with Markle’s gorgeous engagement ring is shared by people around the world, and in fact, I have some proof to back this up – online jewelry retailr Jewlr, based out of Toronto, Canada (where Markle currently resides), introduced a replica of the gorgeous ring only hours after the announcement of the royal engagement hit the wire. The company, which is the country’s leading online destination for personalized jewelry, reported that The Duchess ring is, not surprisingly, extremely popular, and very quickly became the brand’s top-selling engagement ring style, outselling others by 15%. In addition, searches on the Jewlr website for three-stone rings are also up a whopping 220% in just one night.

By now you’re likely wondering where 3D printing fits into all of this, though you may also be able to guess where I’m going. Jewlr, founded in 2009, uses advanced 3D modeling and 3D printing techniques, combined with traditional jewelry manufacturing methods like casting, to produce its rings, which lets them jump on the ball and recreate the hottest trends fast…and what trend is hotter right now than a royal wedding?

“Within minutes of Harry and Meghan’s photocall going live, we experienced a huge influx of searches for three-stone rings. Due to our production methods, we can turn designs around extremely quickly, and once online, products can be created and shipped to customers within days. It’s great to be able to meet customers’ demands for celebrity styles so easily,� said Jewlr founder Tony Davis. “We already know that Meghan is one of the most influential celebrities for driving our sales in the UK, but it’s interesting to see the same effect with a traditional engagement ring. Interestingly, we had an equal amount of female customers as male, which could mean a new trend for women buying engagement styles as a fashion accessory.�

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Whether you’re interested in rings, bracelets, or necklaces, made from materials ranging from LEGOs to platinum, 3D printed jewelry offers a unique level of customization.

Jewlr offers its customers an easy way to purchase custom, personalized jewelry – the company offers thousands of designs for rings, charms, pendants, and earrings, and multiple metals and jewels to choose from. You can also engrave your jewelry in one of four fonts. Once you have finalized your choices, Jewlr 3D prints your jewelry, then casts the metal, sets the stones, and laser engraves your personal message.

The Duchess

You can purchase your own Duchess replica ring, starting at just $99, on the Jewlr website – it comes with a one-year warranty and free resizing for up to two sizes.

The description reads, “Inspired by the royal engagement, the Duchess ring is a stunning token of fairy-tale romance. One beautiful 7×7 mm (2 ct) cushion cut gemstone sparkles at the centre, surrounded by two 3 mm round cut accent stones. Available in gorgeous cubic zirconia or luxurious morganite, and customizable with engravings, give a special someone the royal treatment with this beautiful piece.�

The ring is available in multiple precious metals, and is obviously meant to be worn as engagement ring, though it can also be worn as a royal fashion statement. It is also perhaps a more subtle way to celebrate royalty with 3D printing than, say, a lollipop of the Queen’s face.

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Would you buy this 3D printed replica ring? Join the discussion of this and other 3D printing topics at or share your thoughts in the Facebook comments below.

[Images/videos: Jewlr]