Um Arduino feito em casa, um Programa Online para poupar Chapa, mais uma Màquina CNC Arduino, e um Maçarico que se faz em casa.

E se quiezerem um Arduino, e só tiverem 5 Dólares?

Pois FAÇAM um, e com muitas capacidades, e ainda, sem necessidade de um programador externo, que já já está um dentro!

Gduino-No Programmer Required!! for 5$,Programs Multiple AVRs

Gursimran Singh 425 

 Arduino is familiar to anyone who loves to build tech.It is very common in project makers.But why 25$ For this board!! We can make our own!! In this instructable I am going to show you how to build an arduino at home that doesn't need any external programmers like USBASP or serial communicators.USBASP is already embedded inside this circuit!! I was impressed by bjkayani's instructable Beeduino ,the tutorial is well detailed and also Thomas Fischl's USBASP.I decided to make both these circuits on one board.Not by soldering a perfboard or on breadboard but on our very own built PCB!! Yes we can make it at home!! I will show two ways of etching PCBs and also tell which one would be better!! The other interesting thing is that I made it in just 5$ 5 times less than that of original arduino. And also we can program many other programmable ICs like ATtiny45/85 etc.Enjoy!! 

http://www.instructables.com/id/Gduino-No-Programmer-Required-for-5Programs-Multip/

Alinhar os vossos Desenhos Vectoriais para o Corte CNC pode ser um problema, mas este Programa Online, e Open Source, faz esse trabalho por vós, para poupar tempo, e Material:

Antes

Depois

SVG Nest 

What exactly is "nesting"?

We have some (2d) parts to cut and a piece of material, we want to arrange the parts to use as little material as possible. This is a common problem if you use a laser cutter, plasma cutter, CNC machine etc.

In computer terms this is called the irregular bin-packing problem

How much does it cost?

It's free and open source. The code and implementation details are on Github 

http://svgnest.com/

Poderão talvez aproveitar o tal Arduino acima mencionado, para fazerem mais esta máquina CNC, e fica tudo em casa! 

How to Make an Arduino Powered CNC Machine

AbsorberOfLight

Step-by-step instructions on how to build a low cost CNC machine controlled with an Arduino Uno! 

Roller skate wheels will be used to create the X-Axis sled. A combination of 2in and 1in steel tubing will form the base of the machine. 

http://www.instructables.com/id/How-to-Make-an-Arduino-Powered-CNC-Machine/

...Com meia-dúzia de coisas podem fazer este engenhoso Maçarico, que já alcança uma Temperatura respeitável, e vos facilitará muito a vida de Engenhocas: 

How to make a mini Gas-jet (up to 1000ºC)

Roman UrsuHack

Gas-jet (up to 1000ºС) with your own hands!

With the turned on blowing the gas-jet has a good heating power, it can set alight a plumbeous pellet in a few seconds (up to 1000ºС)!

In conclusion I'd like to say: this gas-jet may be improved by installing an ergonomical (pistol) handle and add the piezoelectric element for lighters for the facilitation of firing. 

https://www.youtube.com/watch?v=tuj6_RC9sKo

E aqui está uma Tecnologia mesmo à espera de ser trazida para o Universo dos Fabbers, dobrar Chapa por controle CNC, até ela ter a forma que desejem, para o que quizerem... 

O exemplo é de Chapa de Aço, mas imagino que Folha de Latão ou Alumínio estará ao alcance de máquinas caseiras: 

Ford's Advanced Prototyping, Personalization and Low-Volume Production Technology

Ford Media 

Ford engineers are developing a highly flexible, first-of-its-kind, patented technology to rapidly form sheet metal parts for low-volume production applications. Once fully developed, the technology (Ford Freeform Fabrication Technology, or F3T) will allow for lower costs and ultrafast delivery times for prototypes -- within three business days versus conventional methods that take anywhere from two to six months.

 https://www.youtube.com/watch?v=Wl5_wUVxRvw

Imprimir Circuitos na vossa Impressora! E um Maçarico a Àgua, 3 motas fantásticas, Botões de PC no Mundo Real, e quanto custa cortar a Laser

E que tal imprimirem os vossos Circuitos Electrónicos, na vossa Impressora comum, onde imprimem os documentos em Papel?
Deve de ser o Sonho de todo o Enhenhocas Electronico, desenhar uns rabiscos num Bloco-notas depois num programa de desenho, e zás, é só testas a coisa!!!
Pois já podem:

New technique to print ink-based electrical circuitry using a desktop printer

Randall Marsh

Researchers at Georgia Tech have developed a new technique to print advanced, ink-based electrical circuitry on a desktop printer. Using about US$300 worth of off-the-shelf equipment, the researchers were able to print arbitrary-shaped circuits on resin-coated paper, PET film, and glossy photo paper with silver nanoparticle ink.
Printing circuits isn’t entirely new, but the team’s technique makes the process faster and cheaper. Similar to graphene-based printing done at the Max Planck Institute, Georgia Tech's method uses empty ink jet cartridges, except it does not require heating for ink placement.
Initiated by the University of Tokyo and with Microsoft Research contributing to the concept, Georgia Tech took the reigns of the project building on its materials and circuit design expertise previously seen in the creation of paper-based sensors for explosives. The team was able to print ink-based circuits in as little as 60 seconds.

http://www.gizmag.com/georgia-tech-inkjet-printable-circuits/29731/

Eis um Maçarico mais seguro, porque usa a Electrólise para criar o combustível que consome, evitando Depósitos de Combustível perigosos, como o Acetileno e o Propano:

SafeFlame torch turns water into fire

Ben Coxworth

The pressurized acetylene and propane gas used in brazing and related tasks is highly flammable, and thus very dangerous. You know what isn't flammable, though? Water. Bearing that in mind, the European Union-funded SafeFlame consortium has developed a torch system that generates a flame using nothing but H2O and electricity.
SafeFlame utilizes an electrical current to electrolyze ordinary water, separating it into hydrogen and oxygen gas. Those gases are then mixed and ignited as they exit the torch's nozzle. By fine-tuning the proportions of the two gases, different types of flames can be produced for different applications.

http://www.gizmag.com/safeflame-water-flame-torch/29673/

Eis 3 Motas de pasmar, porque isto de Engenhocas também tem momentos destes, de pasmar ante coisas muito bem esgalhadas...

Caterham charged to produce e-bikes and motorcycles

Angus MacKenzie

Since 1957 Caterham Group has been known for its purpose-built sports cars, Formula One entries and overall motorsports shenanigans. This week at the International Motorcycle Exhibition (EICMA) in Milan, however, Caterham announced that it will be expanding its product offerings from four-wheeled machinery to that of the two-wheeled variety. Starting in 2014 Caterham Bikes will introduce three new products: the Brutus 750, the Classic E-Bike and the Carbon E-Bike.

http://www.gizmag.com/caterham-motorcycles-e-bikes/29697/

Continuando com Tinta e Electrónica, eis como podem fazer Mostras Interactiva de qualidade, com este Instructable que vos ensina a pintar Ícones no Mundo Real, por assim dizer, pois é só tocar nas imagens, como nas Imagens Interactivas, nos Sistemas Operativos dos Computadores, e Páginas Web!

Stencilling graphics with Electric Paint

BareConductive

With our new Touch Board, you can turn touch into sound on practically any material, but you may also want to make cool graphics that are interactive too!  For a quick way of testing something why not make a stencil? This tutorial shows you how to make crisp clean graphics with Electric Paint and paper or vinyl stencils.

The Touch Board is currently on Kickstarter, so if you like what you see please support this project, and help make the Touch Board a reality!

http://www.instructables.com/id/Stencilling-graphics-with-Electric-Paint/

E quanto vos custa cortar placa numa máquina de Laser CNC?

O nosso amigo Jon Cantin explica, neste Vídeo, não é uma Mina de Ouro, mas se fizerem bem as contas à vida, dá para viver disso... 

Como em tudo o resto!

Ask the CNCKing: What are the electricity costs of running a CNC laser?

How much in electricity does a laser cutter and engraver cost to run? You'll find-out using my friend's calculations based off his 400 watt Kern HSE 100. http://CNCKing.com distributes AI, CDR, EPS, DXF, STL, DAE, PartWorks and PDF files and scaled measurement free templates.

http://www.youtube.com/watch?v=dUDYlgvw0PU