Impressão 3D sobre Papel, eis algo que merece bem destaque!
3D Printing PLA on Tissue Paper
clothbotAt the World Maker Faire this year in NYC I was sharing my experiments in 3D printing plastic on different substrates.
Here is what I have found works with tissue paper.
When it comes to printing plastic on tissue paper, the most important thing to do is keep the paper flat and wrinkle-free during the first few layers and stationary all the way through the build process. Spray-on adhesive can't be used directly on the build surface because the paper will tear when you try to remove it at the end.
The only method I have found that works consistently is to construct a frame that sits snuggly around the build platform, flush with the surface, and glue the tissue paper to it around the perimeter.
O nosso amigo brazilero2008 continua a fazer das suas, eis uma excelente Turbina Electroestática, que tal, para Projecto escolar?
Static electricity is high voltage (HV) at low current. That unexpected ZAP! occurring when you walk across a carpet and touch a metal object demonstrates HV conduction by ionized air particles. Ion wind turbines use electrostatic forces acting between these particles to produce mechanical movement.
I decided to go green by making this desk-top project from mostly dollar-store hardware; re-purposed plastic, cardboard and aluminum disposables from my kitchen recycling bin as well as some curbside junk from the neighbors. The turbine uses foil electrodes that encircle a plastic, tubular rotor.
Each electrode has a sharp edge that sprays a wind of positive or negative ions on the rotor's surface. When these electrodes are arranged so they alternate in polarity around the rotor, each electrode repels a rotor segment carrying the same charge and simultaneously attracts that rotor segment carrying charges deposited by the preceding electrode.
E mais um Instructable, atenção a este, não se brinca com a Segurança, tenham muito cuidado para onde apontam estas setas! Á parte disso, é um Brinquedo bacano, para praticar Tiro-ao-Alvo, sem sobressaltar os Vizinhos.
The B.E.A.S.T. - Bart's Eight Arrow ShooTerbartolo
It doesn't happen often to me being really satisfied with a project, or calling one of my own projects 'megacool'.
This time it's different! I'm proodly presenting you my newest deadly weapon: The BEAST - bart's eight arrow shooter ;-)
Cool, fast, simple, powerful, accurate!
All you need:
- a climber's eight / figure eight / abseilacht
- a strong rubber band
- some paracord
- a few stretchers
and of course, a few arrows
E vem-nos da Alemanha mais este Serviço de Impressão 3D, Beta-Prototypes, vão lá, e vejam se vos serve, para os vossos propósitos:
BETA-PROTOTYPES are specialists in rapid prototyping. Any 3D Model can be created to scale with our cutting edge 3D printers. Turn your digital designs into physical objects in just a few days. Lead the way with BETA-PROTOTYPES!