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this shit is the mother fuckin future
3D printed titanium dropouts from Reynolds tubing.
http://blog.wheelism.co.uk/?attachment_id=1105
http://forums.mtbr.com/frame-building/3d-printing-bicycle-industry-912782-post11914475.html#post11914475
04-20-2015
"Was chatting to Reynolds at the Bespoke show this weekend and they are about to produce a 3D printed titanium and stainless drop out set. By 3D printing they can make it hollow with internal support struts. Looked lovely and really organic. They said they were hoping to hit a price point around £130 which isn't bad compared to machined parts. "
http://forums.mtbr.com/frame-building/3d-printing-bicycle-industry-912782-2.html
03-25-2015
"Stainless steel. Still under development and torture test. I would need to figure it out the oval shape... it's possible to do. The structure design is everything for rings and I'm trying many many options always looking for the lightest and strongest. It's been fun."
...just a bit more on the amorphous stuff...Quotehttp://www.rntbike.com/...
http://reviews.mtbr.com/interbike-road-not-taken-flex-fit-108-flat-pedal-with-float/rnt-foil-tape
http://www.pinkbike.com/news/interbike-2014-tech-fest-special-nerd-worshippers-edition.html
Road Not Taken is a South Korea based start-up company that manufactures simple products that are beautifully crafted and engineered. Their titanium hardtail fame is pieced together using printed lugs, brazed to ultra-strong 6-4 alloy tubes, using a material that has only been available to the public for three years. Amorphous titanium - http://spinoff.nasa.gov/Spinoff2004/ch_7.html - has no grain structure, as most people understand it, and thus becomes almost as viscous as water when it liquefies. RNT wraps a thin ribbon of amorphous titanium around the tubes at each junction and then heats the frame in a vacuum oven until the ribbon melts and bonds the tubes to the lugs. The result is a one-piece titanium structure. I read about amorphous metal a few years ago when The Wall Street Journal announced that Apple had purchased the rights to use the patented process from Liquid Metal - but until Interbike, I had never touched the stuff.
...
Oct 19, 2015
...The appeal of making amorphous metals comes precisely from the randomized cellular composition. That is, the material, being made up of tiny fragments, like grains of sand, have a stronger, harder, and more fracture resilience than regular metals because of the lack of pattern in their composition, so to speak. While metals in their regular crystalline structure tend to break along lines of their cellular structure, the amorphous metals would have no pattern to break along. As Dr. Liou explains, “The smaller the grains, the stronger [the SAM] is.”
The hope is that it will be possible to create new materials with 10 times the strength of conventional metals, which would ultimately lower the amount of material actually needed to produce an object, the weight of the material, as well as production costs. Liou is confident this is where their research is heading. He adds, “If you can have the next breakthrough in materials, you can have a lot of changes.”
For their research, Liou and Sarangapani have been given a $146,758 grant from the National Science Foundation...
http://news.mst.edu/2015/09/researchers-use-3-d-printer-to-make-new-materials/
...Amorphous metal is stainless and gives good mechanical properties such as high strength. Traditionally designed structural steel is an average of 300 megapascals, but can be up to 2,000 megapascals. Titanium, which is often used with the EBM technology, located at 900-1000 megapascals. They now known amorphous metals have a strength of up to 5,000 megapascals. The iron-based amorphous metals Exmet work with is 4000 megapascals...
...In the current situation works two groups are working to develop the manufacturing method. The first group is arranged in the Vinnova project "Improved spring performance - mechanical springs of amorphous steel" and is carried out at Mid Sweden University in Östersund. This one uses a Arcam machine running electron beam, known as EBM technology. One of the characteristics that amorphous steel gives high elasticity, which is examined in the Vinnova project with positive results.
- In preliminary designs on a spring, we have gone from a standard spring of two kilograms to 0.2 kilograms in the optimized spring of amorphous steel, with the same effect, says Mattias Unosson...
2015.9.30
This has been a long time coming.
For what it's worth, I had the idea before either Triple Bottom Line or Bastion launched - but I'm fully aware that that doesn't buy me shit. At its core: build titanium 3D printed bike frame components, and use carbon fiber tubing for areas that are too big to practically print. This avoids the crazy crowded build chamber (and inefficient glue joints) that Renishaw/Empire's bike required, and utilizes AM for what it's good at - making customizable, low-mass parts that fit easily on a build plate.
I thought about this for a *long* time, but only this week spent some time modeling my design spaces in Inventor and poking at the lattice generation process in nTopology Element. This is still far from manufacturable, but it was great to spend a day working through how to design and customize each design space in a way that was repeatable and simple...
...I spent a *tiny* amount of time setting up lattices for each printed component in nTopology Element today. This is extremely preliminary,...
Oct 5, 2015
New York state will invest $125 million to build the world's first industrial-scale 3D printing facility as part of a private-public partnership with Norway's Norsk Titanium AS, according to sources familiar with the deal.
A groundbreaking for the plant is expected in late October or November in Plattsburgh, New York, about 160 miles north of the state capital of Albany, said the sources, who could not speak publicly before an announcement by the state.
They said the plant is slated to be fully operational by the end of 2016 when it will be able to "print" large components for aircraft manufacturers and weapons makers at much lower cost than current technologies.
September 3, 2015
Alcoa announced today it is investing $60 million at its Westmoreland County technical center to expand its 3-D printing capabilities.
The aluminum and titanium producer said the new facility will focus on developing metal powders to use in 3-D printing as well as advancing the printing process and product design. The initiative will target the aerospace market as well as customers in the automotive, medical, and building and construction markets.
Oct 2, 2015
https://vimeo.com/140895362
“This technology is the only one that allows us to achieve these kinds of complex forms,” said Dubois. “We are only at the beginning, and we can still improve the product with more research on energy distribution and flow.”
Antigram driver has the bearing race built in so Titanium really isnt a good choice. Even if it were, it would need to be ground after printing to get the surface finish necessary, so you might as well just machine it.this would be closer to 18 years from now, but eventually a ti driver that fades into a hardened steel race would be neat...
NASA lab's gradient additive manufacturing technique melds two or more metals in a single part.
July 31, 2014
http://www.design-engineering.com/general/nasas-jpl-develops-multi-metal-3d-printing-process-132113
...This technique involves blowing multiple metal powders into a laser beam, so that the laser melts the powder and forms a small pool at the point where the laser touches the part that is being built...
http://www.steelguru.com/international_news/NASAs_JPL_develops_multi_metal_3D_printing_process/345699.html
NASA's JPL develops multi metal 3D printing process
sunday, 03 Aug 2014
researchers at NASA’s Jet Propulsion Laboratory say they are in development of a 3D printing technique that allows for print jobs to transition from one metal to another in a single object...
“We’re taking a standard 3-D printing process and combining the ability to change the metal powder that the part is being built with on the fly. You can constantly be changing the composition of the material.”
According to the researchers, the process is based on Laser Deposition technology, in which metal powder is injected into a high powered laser beam that melts the surface of the target object to form a small molten pool. Powder applied to this pool is absorbed and leaves a deposit as thin as 0.005 in. thick. These densely bonded layers can then be used to either build or repair metal parts.
In JPL’s technique, the build material’s composition is gradually transitioned as the print progresses. For example, the powdered build material might contain 97% titanium alloy and 3% stainless steel at the beginning of the transition. Then, in 1% increments between layers, the gradient progresses to 97%stainless steel and 3% Ti alloy by some defined point in the overall 3D printing process.
The main benefit in addition to testing the metallurgical properties of new alloy compositions is to take advantage of the differing physical properties (i.e. thermal expansion, magnetism or melting temperature) of the two or more metals in one solid component.
http://blogs.hotrod.com/space-metal-we-get-a-sneak-peek-at-nasas-3d-printed-metal-alloys-132213.html
September 25 2014
Using a modified version of the laser-melted powdered metal process, JPL has figured out how to make gradient metal alloys, both in a linear shape and with radial forms.
Spacely's Orbiting Ore Asteroid is a plant mining and manufacturing sprockets in space
and I wonder if anyone will try integrated fluid lines...looks pretty similar to those chainstays, too...
http://www.3ders.org/articles/20150818-google-partially-3d-printed-humanoid-atlas-robot-goes-on-successful-walk-in-the-woods.html
In part, the successes have been realized through extensive experimentation with lightweight 3D printed parts. Raibert revealed that in the current state of the robot, the valves for the hydraulic fluids, as well as the shells and lattice structures on the Atlas’s legs have been improved by 3D printing them. While it isn’t known if the final edition will feature 3D printed parts, the technology is thus obviously playing a major role in development.
https://www.youtube.com/watch?v=NwrjAa1SgjQ
2010 ... the University of Warwick is partnering with the University of Wolverhampton on the assessment of laser sintered titanium for hydraulic components such as manifolds, many of which contain complex fluid flow channels... http://dumpt.com/img/files/vdl7l472korohz6ceftq.png http://www.machinery.co.uk/machinery-features/additive-manufacturing/26036/
http://startline.org.uk/slol87/wlv/wlv.htm "A thin skinned hollow bike brake handle in aluminium - staggeringly light."
This framework model was 3D printed without outer layer, thus bionic details are visible: such as the lattice structure at the bottom bracket, the connection concept of the middle strut and the edge reinforcement on the seat tube. http://elise.de/documents/ELiSE_AM_web_DE.pdf http://www.industrieanzeiger.de/singapore/-/article/32571342/40865255/Leichtbau-bionisch-%E2%80%93-aber-mit-System/art_co_INSTANCE_0000/maximized/ https://www.linkedin.com/company/citim-gmbh
http://www.reuters.com/article/2015/08/02/us-usa-election-trump-exclusive-idUSKCN0Q62RQ20150802
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