Atenção, Malta do Mundo Lusófono!
Isto é importante...
Todos vós, com jeito para as Engenhocas, mas poucos meios, ou muitos Projectos, ou ambos, podem agora ter um Quadracóptero, que vos vai custar umas idas ao Sucateiro, e pouco mais!
Aproveitem.
E-Waste Quadcopter Lifts Your Spirits While Keeping Costs Down
Rich Bremer
The advancement of Quadcopters and their capabilities over the last few years has been amazing. Unfortunately, the price point to get into the sport with a decent size, non-toy, vehicle is still several hundred dollars. And what’s the fun with buying one when you can built it?!? Strapped for cash and feeling the same way, [Hans] over at the hackerspace Knackatory decided to build a quadcopter from e-waste.
The + shaped frame is made from lightweight plywood. It’s pretty obvious that the main rotors are PC Fans, 140mm in this case. Normally, these wouldn’t be able to create enough lift to get out of their own way except the on-board 24v Dewalt cordless tool battery bumps up the fan speed to 15,000 rpm. The one orange fan allows the operator to maintain a visual reference to which side of the ‘copter is forward.
https://hackaday.com/2014/04/01/e-waste-quadcopter-lifts-your-spirits-while-keeping-costs-down/
Para quem tem problemas com a Impressão 3D, usando Policarbonato, cá vem metacolin, da Prusa, ajudar-vos com uma mão-cheia de Dicas, e a melhor, penso eu, é a de assim, substituír as peças feitas em ABS, em tudo o que seja máquinas...
Polycarbonate: Here's how to print it without warping, delamination, or an enclosure, with better-than-ABS results.
metacollin
You're probably a bit skeptical, the title sounds to good too be true. But benchy don't lie:
All of the parts in the attached photos were printed using the crappiest/cheapest polycarbonate filament I could find on a stock Prusa i3 Mk2s, the glue stick it came with, and some fairly unusual Slic3r settings.
If you aren't familiar with polycarbonate, it's what bullet proof glass is made out of. And it is notoriously difficult to print. To the point that the 'action shots' of eSun etc. shows, well, pretty crappy results in the 3D printed objects.
But I think that's because we're taking a fundamentally incorrect approach to printing PC. I'm getting excellent results. I see no reason to print ABS, PETG, or even nylon at this point - all polycarbonate, all the time. Er, I'm obviously more about practical prints that need strength, PC is not going to be a good replacement for PLA for aesthetic prints :).
I'm currently in the process of replacing all ABS parts on my printer with polycarbonate ones, now that I have a good printing process figured out. Let me tell you - aside from being comically strong (PC's nickname 'King of the Filaments' is well-earned), the dimensional accuracy is just killer. I remember having trouble getting a few nuts in their holes when assembling my Mk2s from a kit, the ABS tolerances just weren't that great. Nothing some percussive maintenance couldn't fix, but still.
https://shop.prusa3d.com/forum/print-tips-archive--f86/polycarbonate-here-s-how-to-print-it-without-warpi-t6919.html
Do Crowdfunding, para o Mundo Real, é um passo que nem sempre é dado, mas a Glowforge, que podem comprar às prestações, é um caso exemplar.
De sublinhar, este bicho pore gravar sobre superfícies CURVAS, o que faz dele uma bela ferramenta de trabalho!
É bom.
Glowforge Launches the 3D Laser Printer That Made Crowdfunding HistoryGlowforgeFor the first time ever, laser cutting and engraving technology has been freed from the factory and made easy and affordable for home and small business use.
“From the very start, we designed the Glowforge 3D laser printer to unlock people’s creativity,” said Dan Shapiro, CEO of Glowforge. “We set out to re-invent the idea of ‘homemade.’ What if you could print what you wanted, when you needed it? What if you could sketch a design, then turn it into something real you could use, without complicated software? What if your gifts were personal instead of purchased? What if it was easy to print your ideas a hundred times, so you could launch a business?”
Glowforge sets up in just minutes and works via Wi-Fi. No software is required, as it uses the web browser or app on any Mac, PC, tablet, and smartphone. Users can create and print from software including Adobe Illustrator, Inkscape, CorelDraw, Adobe Photoshop, GIMP, Autodesk 360, and Sketchup. They can also bypass software altogether – the onboard cameras can scan a drawing and transform it directly into a beautiful print on almost any material.
Eis um Concurso bacano, sobre uma já de si boa Ideia, fazerem as peças deste Jogo de Construcção, nas vossas Impressoras 3D;
Pois agora podem ainda por cima ganhar uma Impressora 3D, montando uma ideia vossa, com essas mesmas peças:
Design Brief
Did you ever play with construction game sets like Meccano or Lego when you were young, and now miss it? Well here is our new Clickaloo design challenge! Clickaloo is a very simple and fully 3d printable game-set to play with, just like back in the days.
This competition is a bit different than others because you won’t have to design anything new. Instead, you have to be as creative as you can with the parts that already exist. You can find all the existing part in the design resources. Feel free to design other parts if you need to, but it won’t give you extra points!
It is highly recommended to provide a construction plan of your creation in order to help people to build your wonderful creation.
Submit your project before September 4th to be in with a chance to win a Craftbot 2 3D Printer by CraftUnique.
Algo ainda só para grandes Companhias, mas como tudo o resto na CNC acaba numa versão mais caseirinha, podemos começar a sonhar com peças METÁLICAS, de várias ligas, feitas a ume velocidade estontante, nas nossas Oficinas!
Brutal!
MUÁHÁHÁHÁHÁ!
Digital Alloys raises $12.9M Series B from G20 Ventures, Boeing for metal 3D printingThomasBoeing HorizonX says it’s investing in Digital Alloys, a Burlington, Mass.-based company developing high-speed, multi-metal additive manufacturing systems that produce 3D printed parts for aerospace and other production applications.The $12.9 million Series B financing round was led by G20 Ventures, while Boeing HorizonX Ventures, Lincoln Electric, and Khosla Ventures also participated. Khosla Ventures is a prior investor which led Digital Alloys’ $5 million Series A round of funding in 2017.Digital Alloys was founded in 2017 when it was spun out of New Valence Robotics. Digital Alloys developed a patented Joule Printing™ metal additive manufacturing technology, a radically simple new process that uses wire feedstock and high deposition rates to print hard metal parts faster. This new 3D-printing approach can rapidly combine multiple metals into each part, which enhances thermal, electrical, magnetic and mechanical properties. Digital Alloys says its technology avoids the cost and complexity of powder-based systems, and delivers higher resolution than other wire-based 3D-printing techniques.
