Um livro empolgante! Mais Moldagem a Vácuo super-barata, um Rato atrevido, e um Scanner 3D Raspberry pi!

Eis como falar de CNC, sem adormecer o Leitor...

Já cá canta, e é porreiro!

O nosso amigo Jon Cantin, explica-nos aqui muita coisa sobre o Fabbing, e ainda vos oferece projectos com explicações passo-a-passo, enquanto vos fala com linguagem concisa e directa ao assunto, nascida dum Saber de Experiência feito;

Impressão 3D, Corte Laser, Plasma, as várias Máquinas, seus prós e contras, e como projectar Objectos para essas Máquinas, tudo num Livro fácil de ir lendo, mas informativo.

É bom!

CNCKing.com Volume 4: Rise of the CNC - Ultimate CNC Design Course

Jonathan Cantin

Two years in the making - CNCKing.com: Rise of the CNC ~ Ultimate CNC Design Course teaches the fundamentals of designing products to be cut with a CNC Table Router, CNC 3D Printer or CNC Laser Cutter & Engraver. Across more than 450 pages, 64 projects are shown in various formats to help teach the reader how to successfully design for these CNC machines.

http://www.amazon.com/CNCKing-com-Volume-Ultimate-Design-Course/dp/1896369510/

Querem fazer alguma Moldagem a Vácuo, e têem pouco tempo para isso, ou querem só experimentar? 

Não há mais fácil que este Instructable, nem mais barato, feito com coisas que se encontram nas Lojas, e re-utilizando pratos de Plástico:

Very Simple Vacuformer 

ekpuz

This design was inspired by this: http://www.fringeneering.com/2012/07/vacuum-forming-on-mega-cheap.html but designed to be super easy to make using off the shelf parts and minimal machining. Instead of using laser cut or 3D printed parts, we will use toilet flange extenders, available at Home Depot to make the base and the clamp that will hold the plastic to be formed (disposable plastic plates work great).

http://www.instructables.com/id/Very-Simple-Vacuformer/

 

O nosso amigo Rob Ives oferece-nos este simpático Ratito, que arranca um sorriso ao mais sorumbático, e é fácil de montar, para pôr na Secretária, ao lado do Rato do PC:

 

Paper Mouse - Download and Make

This fun paper mouse project comes complete with its own piece of cheese to cut out and make! Members can download the parts for free at the link, thanks for signing up! Non-members can download the parts file for £2.50.

Print out the single sheet of card onto thin card. 230 micron /67lb is just right.

Score along the dotted lines then carefully cut out the parts.

     

http://www.robives.com/blog/mouse

 

E com vários Raspberry Pi, faz-se o quê?
Um Scanner 3D de alto gabarito(!)

Para scannarem Retratos de gente em 3D, e em poucos segundos, como as Máquinas de Fotos À la Minute, e eis como:

Multiple Raspberry PI 3D Scanner  

the_anykey

Hi,
I am a big Arduino and Raspberry PI fan and also love 3D printing. I wanted to be able to make a 3d model of my kids and started investigating how to build a 3d scanner. I found a lot of solutions out there, but the problem with most of them is that the subject would have to sit still for a while... well I think it would be easier for me to invent a spaceship that can fly to mars then inventing a solution for my 2-year old son to sit still :-( So none of those solutions where going to work.

I knew I had to come up with a way to instantly take many images at the same time. So I first started to research what cheap digital cameras exists. If I could find a cheap model, I probably could make an automated trigger system using arduinos. But then I would have all the images on many separate SD cards and I was not able to find a cheap good digital camera.

Then I noticed the Raspberry PI and PI camera combination. A "fairly" affordable module, that already is ethernet connected, so I could do the triggering of the cameras using the network and an easy way to download all the images to a centralized place. So my Project (and investment) started.

http://www.instructables.com/id/Multiple-Raspberry-PI-3D-Scanner/

Os Ímanes são estranhos... E Arduino Congelado(!), o Museu das Invenções estará a votos, e Papercraft Mecânico...

Os Ímanes são estranhos... Podem-se calcular as forças de atracção de dois Ímanes de Diâmetro igual, mas de Diâmetro diferente... Já é outra coisa!

Vejam este artigo  do Blogue da KJMagnetics, onde ainda podem encontrar um App para calcular forças de atracção de Ímanes de diâmetro igual, e um gráfico para diferentes.
E se quizerem ver como os Ímanes mais achatados têem uma atracção desigual, vejam este Vídeo:

Magnets Are Weird

In this article, we discuss a few things that might make you question what you think you know about magnets.  We’ll show magnets stronger at the edges than at the center.  We'll see magnets that won’t attract to center upon one another.  We’ll even make the north pole of one magnet stick to the north pole of another.

Mental Models of Magnets

The forces between magnets have long fascinated us.  It is a strange thing to think about: forces that you can’t see can cause things to move.  Albert Einstein described his first interest in science stemming from his fascination with a magnetic compass at a young age.

When we think of magnets, most of us think about how they work in terms of an analogy:  We might think of magnets as having invisible mechanical springs between them.  Or we follow simple rules that apply in most situations:  “Opposites attract” or “the north pole of one magnet attracts to the south pole of another” to predict their behavior.

In many cases, this way of thinking works pretty well.  In some situations, though, it completely fails to predict the actual behavior of magnets.  The “model” is too simplified, and doesn’t accurately describe how magnets behave.  Whenever we find magnets behaving in ways that don’t seem intuitive, we find ourselves muttering, “Magnets are weird!”

http://www.kjmagnetics.com/blog.asp?p=magnets-are-weird

  

 

Dica do nosso amigo Alan Metcalfe, o Arduino agora foi congelado, para se conseguir mais velocidade dele, por isso, se são fâns do Overclocking, leiam isto:  
 

 

Overclocking Arduino UNO with liquid nitrogen

I must be missing the over-clocking gene, but a lot of modders love to push a piece of kit that bit further, sometimes by any means necessary.

That seems to be the case with a modder called Michail who has managed to overclock an Arduino using liquid nitrogen, no less. Cooling to -196°C he hits speeds of 65.3MHz.

Why overclock a dev board with liquid nitrogen? He answers this one in a blog post – because he could, and he wanted to learn how electronics behave at cryogenic temperatures. And he says he was just curious to see “how much juice you can squeeze out of AVR if you push hard enough”. (AVR is the “C” environment for programming Atmel chips.)

http://www.electronicsweekly.com/gadget-master/arduino/overclocking-arduino-uno-with-liquid-nitrogen-2013-08/

 

A partir do dia 16 de Setembro, podem votar na proposta 395, que já figura no Lisboa Participa, como um Projecto, e podem ir à página do Facebook, também:

  

projectos

Área:Cultura

Título:Museu da Criatividade e Invenção de Lisboa

Descrição:
Museu que aborda a aplicação da ciência com fins utilitários, comerciais ou industriais, i.e. as invenções, com um foco na inventividade e criatividade de origem portuguesa, dando a conhecer ao público em geral o que se tem feito e faz neste domínio e sendo também um espaço activo de fomento da criatividade, permitindo experiências hands-on que atraiam todo o tipo de público mas com um foco na camada infanto juvenil.

Local:A definir

Custo:500000.00

Prazo de execução:18 meses

 

http://www.lisboaparticipa.pt/pages/projetos.php/projId=711___ano=2013

 

Vão já agora à página do Facebook, e carreguem em "Like"!

  

https://www.facebook.com/muci.lisboa

E Rob Ives volta a atacar, com esta maravilha mecânica, e em Paperctaft, por isso, sigam este Projecto, e boa sorte, Rob!

Using a Ratchet to Drive a Key

I'm working on a project for client that has a decorative clockwork key on its side. I'd really like key to turn as the model operates. The character itself will be jumping up and down so I'm trying to harness this motion to turn the key. If I can get the mechanism to work well it would apply well to a clockwork robot model like the one in the sketch below which I can then make into a model for robives.com.

 http://www.robives.com/blog/using_ratchet_drive_key

Super Brittliv! E 7 coisas para fazer com o Oogoo, uma Aranha Mecânica, o Phono-Horn, e um Arducóptero!

A malta Geek tem mais uma Heroína, e chama-se Brittliv! :

Eis uma Metralhadora-Sentinela Nerf, que dispara contra tudo o que se mexe... Mas não dispara contra quem tenha uma T-Shirt dos Instructables!

Genial!

MUÁHÁHÁHÁ

Nerf Vulcan Sentry Gun

BrittLiv

In this instructable, I will show you how to modify a Nerf Vulcan to automatically aim and fire at targets.  As an added bonus, this gun won't fire at anyone wearing a shirt with the instructables robot on it. I had this project in mind for a long time and finally managed to find the time to bring it to life.

If you've been browsing through my other instructables, you might have noticed that I am obsessed with Nerf guns. So far, I’ve managed to infect just about everyone around me with the Nerf virus. It is really fun to see how these plastic toys turn grown men into small boys!

My main aim was for it to look awesome; which was difficult to achieve without removing the front part of the gun. But, I managed to accomplish this without removing the barrel, and I’m really happy with how it turned out!

http://www.instructables.com/id/Nerf-Vulcan-Sentry-Gun/

E temos mais 7 e tal coisas para fazerem, ou repararem, com o Oogoo, cortesia do nosso amigo mikey77, de Borrachas de apagar, a um líquido para fixar porcas, que permite que o removam quando necessário:

7 Things To Fix Or Do With Oogoo

mikey77

 

Silicone caulk be hacked into all kinds of useful things. This adhesive has the unique qualities of sticking well to some things and not others. This makes it easy to cast into many shapes. If you add corn starch, it can be cast or formed or glued into shapes of any thickness and it can set up within an hour. I call this mix Oogoo.

This instructable shows how to fix or make seven things:

Step 2- Make heavy duty rubber bands

Step 3- Make your own custom erasers

Step 4- Make a wallet pen

Step 5- Make a hot pot gripper

Step 6- Fix a broken bucket handle

Step 7- Make liquid tape to insulate splices

Step 8- Make a thread locker for nuts and bolts

http://www.instructables.com/id/7-Things-To-Fix-Or-Do-With-Oogoo/

Eis mais algo para animar míudos e graúdos, Malta! Uma Aranha Mecânica completamente realista, e dum Site, onde há muito mais, inclusive uma versão mais económica, acessórios, e uma data de Kits!

 

T8 the Bio Inspired 3D Printed Spider Octopod Robot

T8 is a wirelessly controlled bio-inspired octopod robot made with high resolution 3D printed parts. It uses a total of 26 motors: 3 in each leg and 2 in the abdomen. It is powered by the Bigfoot™ Inverse Kinematics Engine which performs all of the necessary calculations for smoothly controlling the motions of the robot in real time

http://www.robugtix.com/

 

 

O nosso amigo Rob Ives oferece-nos agora este acessório, para ouvirem a vossa Música, com um Altifalante como os os Gramofones, juntando o assim o Moderno e o Antigo:

 

Phono Horn. Free Sound Dock for your Smart Phone to Download and Make.

Phono-Horn. A paper sound dock for your smart phone! Play your phone through the Phono Horn and the sound output is richer and clearer with improved bass response. There are two base templates included, one for iPhone 4S and one for Samsung Galaxy S2 and S4. It should be easy to adapt the kit to suit most phones. It is simply a matter of ensuring that the loudspeaker on the phone is positioned over the horn inlet hole.

http://www.robives.com/blog/phonohorn

E o que é um Arducóptero?

É um Hexacóptero que vocês podem controlar com os vossos SmartPhones, e ainda por cima, este Instructable vem com todos os detalhes possíveis, por isso, mãos à obra!

Building UP an ArduCopter!

husamwadi

Today's guide will be about building an Arducopter, or otherwise known by the locals as "Flying Hedge Trimmer".


My greatest problem with the world of  RC and hobbyists is that there never is a complete guide on doing ANYTHING!

The experience of learning how to build a hexacopter from no knowledge is basically a big scavenger hunt for information. There was always bits and pieces, but never a complete guide for the build log, hardware, AND SOFTWARE (99% of the build).

I'm here to change that issue, so hopefully I can enlighten Instructables with a COMPLETE guide on building a Arducopter!

http://www.instructables.com/id/The-Almost-Complete-Guide-to-Building-an-ArduCopte/

Amorim Inventa! e um RoboPato, DesignLuso-Britânico, Remos, e um Pantógrafo

O Grupo Amorim, Companhia que muito fez e faz pelo nosso País, inventou este sistema de Rolha-e-Garrafa, que não necessita de saca-rolhas...

Porque se desenrosca a Rolha!

Parabéns, e façam favor, continuem a ser como são.

Twist-off cork shifts the wine paradigm

David Szondy

What could be nicer than a picnic in a pleasant country field, a rotisserie chicken, a loaf of oven-hot bread and a nice bottle of wine? That is, provided you don't forget the corkscrew. This week, Amorim, the world’s largest manufacturer of cork stoppers, and O-I, the world's largest glass container manufacturer, made this nightmare scenario a little less likely by unveiling their Helix cork and bottle that are designed so that the cork can be removed with a simple twist of the wrist.

The Helix “twist to open” system consists of an ergonomically-designed cork stopper and a glass bottle with an internal thread finish in the neck. Instead of requiring a corkscrew, it opens like a screw-top bottle, though with the addition of a pleasant “pop.” It is also resealable as easily as it opens.

http://www.gizmag.com/helix-cork/27951/

Notícias da Mindsets, este Robot-Pato é uma ideia genial para conquistar as Crianças para a Tecnologia, porque até os Adultos quererão construír um! 
Eu sei que EU quero... LOL

Robot Duck

Is there a convenient way to enable whole classes to get involved in robot building..?

This ‘kit of parts’ has all the basic components – including pre-cut plates – needed to get a robot walking, but not all the final answers.
Creative involvement ranges from investigation of mechanical variables to a major re-think of geometry. Or how about a simple hand-coloured body for the duck...

http://www.mindsetsonline.co.uk/product_info.php?products_id=934

Este é outro bom exemplo, Cortesia da página Facebook do nosso amigo GlenHo Bespoke, de que se pode fazer Mobiliário acessível e bem-feito, e em colaboração com outros Profissionais, de outros Países, mais uma boa Iniciativa, desta vez, Luso-Britânica, estão de parabéns!

Another Country makes contemporary craft furniture by hand in workshops in the UK and Portugal. We believe in good design, longevity, sustainability and quality at fair prices. Welcome to anothercountry.com

In Portugal we manufacture one hour south of the beautiful city of Porto. We filmed one of our visits to show you how our furniture is made...

The workshop is unique in being climate controlled, ensuring our furniture is made in an optimal environment. Whether we made in the UK or Portugal, we always select FSC certified solid woods. The workshop is heated entirely by the wood off-cuts it generates.

We combine traditional methods of making with modern technology to ensure that each piece is made with great care, attention to detail and precision. Every piece is hand assembled and hand finished. And finally, each piece is quality controlled before leaving the workshop.

We really believe you can not make furniture in a better way than this.

http://www.anothercountry.com/

Mais uma Engenhoca em Papel, do nosso amigo Rob Ives, a evolução dum sistema mecânico para remadores em papel, algo que faz sempre sorrir, e é porreiro de montar:

Row, Row, Row Your Boat

Visit the blog and follow along with the development of a new, as yet un-named project featuring three syncronised rowers in a boat.

Possibly a Ship of Fools or possibly a Wolf Boat, I'm not sure yet. One thing I have worked out though is the mechanism to drive the oars.
Follow along how this project develops on the website by clicking on the link.

http://www.robives.com/content/row_row_row_19th_june_2013

Terminamos por hoje com outra dica de GlenHo, esta simpática página em Francês, L'air du Bois, , onde se vâ este muito bem acabado Pantógrafo em Madeira, para Fresa, um mimo, e ainda podem descortinar na foto um Desenhador de Elipses, que serve às mil maravilhas, na Fresa:

Table pour pantographe de défonceuse

Le pantographe pour défonceuse est une machine finalement assez intéressante pour copier. Et c'est aussi une machine assez polyvalente. C'est pourquoi, j'ai repensé la table qui supporte autant les pièces à usiner que le modèle à copier.
Ma première utilisation a été d'en faire une machine à queue d'arondes. Le résultat est très satisfaisant.
Cette table permet le serrage et le maintient des pièces à plat et debout.
Une petit tablette réglable vient chevaucher le tout pour porter le modèle à copier.

http://www.lairdubois.fr/creations/82-table-pour-pantographe.html

 

Um Torno por quase nada? Mais Papercraft, Ímanes em Folha auto-colante, e sensores para tudo!

Acabadinho de descobrir, eis um Torno que se constrói por quase nada, impecável para tanto Sítio onde falta de tudo...

Ou para Sovinas, como eu! LOL

Meritória Obra do Site engineeringforchange.org, podem ver, e descarregar, no Link abaixo este maravilhoso Pdf, que vos mostra como se faz:

Multimachine Concrete Lathe Ver 1 10 by engineeringforchange.org

The Multimachine OpenSource Concrete Lathe Project
An almost free metal lathe, drill and millingmachine
● Accurate, and scalable to almost any size
● The technology used has been proven for almost 100 years
● Easily made from scrap, steel bar andconcrete mix
● Built with common hand tools, a drill and afew small welds
● Simple screw cutting without gears
● Easily converted to drilling and milling
Anyone is welcome to translate and sell this.pdf in the Developing World. Contact us for the free Open Office files.
The basic machine tool, the basis for anymanufacturing or industrial production

https://www.engineeringforchange.org/news/files/multimachine-concrete-lathe-ver-1-10.pdf

Mais uma obra de Mecânica em Papercraft, de Rob Ives, esta Manivela de deslizamento duplo, para juntar às outras pequenas maravilhas, em breve:

Co-axial Crank-slider coming soon 

I'm almost done with this co-axial crank-slider, just the assembly photographs to process. A crank slider mechanism uses a crank, the rotating bit at the bottom, and a slider tube hinged onto the top of the box to convert rotary motion into an up and down, back and forth motion.
The co-axial part means that two sliders share the same axis to make a more interesting motion.

http://www.robives.com/blog/co_axial_crank_slider_coming_soon

 

Ainda da Supermagnete.de, estas Fitas-Ímane, auto-colantes, para sabe-se lá mais que usos todos os Engenhocas não acharão para elas...

Magnetic tapes

You can use these magnetic tapes in various sizes and colours to label steel shelves and metal cupboards. You can cut the tapes to the desired size with scissors and they are easy to write on.

Magnetic tapes with self-adhesive backside come in handy when you want to attach a non-magnetic object (e.g. a sign) to a magnetic surface. The self-adhesive tapes also stick together, so you can connect two non-magnetic objects with each other.

http://www.supermagnete.de/eng/magnets.php?group=magtapes

 

Para uma data de fins, eis uma data de Sensores, que não me lembrava, nem a mim, do Blog da DesignSpark...

A lista destes 6 Sensores, é impressionante, podem detectar, desde Cores de luz, a Eventos Nucleares!!!

 

Six less ordinary sensors
Andrew Back  

This post looks at six slightly more esoteric ways of sensing the environment.

So many projects use commonly available sensors to detect heat and light levels along with pressure and movement etc. However, these represent only the tip of the iceberg and there are many more ways of sensing the environment and that range from useful, through unnerving to surprising.

http://www.designspark.com/blog/six-less-ordinary-sensors

Ciclóides, peças avulsas, Grafenos-esponja,

Uma pequena maravilha mais do Rob Ives, esta engrenagem se Ciclóide, vão ao Link, para verem o seu Vídeo meio hipnótico:

The hypocycloid mechanism is used to make a compact, simple gear box that reduces rotational speed. In the case of this animation the reduction is 7:1. Follow one of the lobes of the six pointed rotor with your eye and see how it advances one notch anticlockwise for each rotation of the blue rotor. By adding two similar mechanisms back to back it is possible to multiply up the the gear reduction ratio

http://www.robives.com/blog/hypocycloid_mechanism_animation

Já acende a Luz!

Já podem ver no Youtube a minha Ray-Gun com o Laser e Lanterna, um clique rápido, é só Laser, para apontar, um clique mais prolongado, e acende a Lanterna, para procurarem os vosso papéis, na demonstração que façam...

...E a Luz dá um efeito dramático do caraças! :) 

Mas o que é importante, é salientar, que tive de fazer uma peça em três partes, cortada na boa da Serra Pendular, para segurar as Pilhas, e é claro, o Laser e os Leds, na Placa minúscula que tamvbém tem os 2 interruptores:

Não esquecendo a peça, em Acrílico Branco, à esquerda, na parte do meio, que acciona os interruptores, empurrada pelo Gatilho:

 

Talvez inclua estas 3 peças no Desenho que vendo na Net, mas como não sei o que vão pôr na Ray-gun, vai ser muito modificado, este acessório, por cada um... 

 

E continuando a Corrida, entre o Aerogel, a Aerografite, e os Grafenos, pelo Material mais Leve, eis este Grafeno que é uma Esponja, de tal maneira, que absorverá, no Futuro, Derrames de Óleo, e podendo ser re-utilizado!
É bom!

Graphene aerogel takes world’s lightest material crown

Darren Quick

Not even a year after it claimed the title of the world’s lightest material, aerographite has been knocked off its crown by a new aerogel made from graphene. Created by a research team from China’s Zhejiang University in the Department of Polymer Science and Engineering lab headed by Professor Gao Chao, the ultra-light aerogel has a density lower than that of helium and just twice that of hydrogen.
Although first created in 1931 by American scientist and chemical engineer, Samuel Stephens Kistler, aerogels have recently become a hotly contested area of scientific research. A “multiwalled carbon nanotube (MCNT) aerogel” dubbed “frozen smoke” with a density of 4 mg/cm³ lost its world’s lightest material title in 2011 to a micro-lattice material with a density of 0.9 mg/cm³. Less than a year later, aerographite claimed the crown with its density of 0.18 mg/cm³.

http://www.gizmag.com/graphene-aerogel-worlds-lightest/26784/