Blog Posts

quinta-feira, 16 de fevereiro de 2017

Um Forno de temperar metal! E fotos da passarada, uma Serra de Fita portátil, o vosso póprio Aduino Nano, e uma Mega-Lanterna LED

Se quizerem temperar Metal duma forma científicamente controlada, podem agora fazê-lo, a preceito, com um baratíssimo forno de Toradas, e uns truques!
É bom!
Muito importante para obterem peças em Aço com a dureza e flexibilidade que quizerem, molas ferramentas de corte, etc. 

PID Temperature Controlled Oven

With this instructable, we will take a cheap toaster oven and turn it into an accurate, temperature controlled tempering oven that will be able to achieve a stable and accurate temperature controlled by a microprocessor.
We will combine some common and off-the-shelf components to easily and safely achieve this goal.
Why do we want to do this? After heat treating steel, it's in a very hard and brittle state. So we can use it with less risk of it snapping, we want to temper it. Tempering will slightly soften steel, but more importantly will restore flexibility to it. Most steel manufacturers specify particular temperatures to temper steel at so you can achieve a given hardness rating.

Para fotos da passarada do vosso Quintal, enquanto não lá estão, que é quando eles estão à-vontade, contem com esta Engenhoca, que detecta os vossos amigos de asas, e os fotografa, enquanto vão às compras:

Simple PIR DSLR Camera Trap


The biggest problem I have capturing images of wildlife is not getting close enough to the subject. I never have enough time to sit and wait for them to come to me or they are easily spooked, and fly away at the first sign of movement. Using an simple, widely-available PIR motion sensor, I can leave my DSLR in the yard to capture images while I run errands, cut the grass, or even leave it out overnight.

Uma Serra de Fita que podem levar às Exposições, Trabalho de Campo, Campos de Aero-modelismo, e o mais que queiram, já existe, mas o que fazem com esta adaptação, é terem uma base fixa que vos permite tabalhar duma forma precisa, como nos modelos maiores:

Portable Bandsaw Metal Stand

I recently got a portable band saw for cutting metal.
In order to get the full potential out of it, I built a metal stand so I can use it like a traditional vertical bandsaw.
My stand is essentially a metal version of this wooden one made by Honus, coincidentally made to use with the same model of saw (DeWalt DWM120 Portable Band Saw).
If you're looking to make a metal stand for your portable bandsaw, hopefully this will help you out. It's a great project to practice some welding as well as a bit of precision metalwork. Thanks for checking this out.

O Arduino Nano é um Chip bacano, e podem agora fazer um em vossas casas!
Por isso, se têem amor ao Hobby da Soldadura, mãos à obra:

Make your own Arduino Nano (DIY - Arduino Nano)

Pratik Makwana  
In this instructable, I will show you how to make your very own Arduino Nano. I'm using laminator for the toner transfer method.
What things you will need:
Copper - clad board (Dual Layer)
Ferric Chloride (FeCl3)
Acetone (Nail polish remover)
Glossy Paper
LASER Printer
Marker Pen
Plastic container
Sand paper
Safety gloves
Latex gloves
Saw - For copper board cutting
Laminator or iron
Let's Do it...

Esta Lanterna, é um Farol!
Podem ter assim uma Fonte de Luz LED que mete respeito, para as vossas Experiências, e tudo o que envolva uma actividade nocturna sem outas condições.
Ou uma Garagem ou Cave onde têem de trabalhar, mas sem Luz de Jeito!

Mega Torch - the ultimate guide
Mega Torch Build!
Welcome! This instructable has been 'written' mainly as a set of detailed videos (10 in total including the 'fake' advert above). As such, you will find the text is sparse but, this is more than made up for during the in depth descriptions in the vlogs.
I hope you enjoy this build and hope you can find the time to subscribe to my YouTube channel.
In this series, each video is between 5 and 15 minutes long and so its time to get a nice cuppa, sit down and lets get started!
Happy making!

segunda-feira, 6 de fevereiro de 2017

Dobrar Metal? E extraír fumos, 3D do Smartphone, 507 Movements, e uma Prensa em Alumínio

Uma Ferramenta para dobrar metal, com qualidade e precisão?
Faz jeito, faz...
E podem agora ter uma em casa, feita de propósito para quem não tem muito dinheiro livre, mas quer resultados de qualidade:

Homemade Roller Bender
Make it Extreme 
The main problem that people, who are occupied with doing various metallic projects and generally constructions, face is the bending of metallic pieces. The reason that this problem is arisen during these projects is because the metallic pieces need a lot of pressure, strength as well as accuracy to be bent. There are many machines to be used to achieve this but the cost is high. Although, the metal roller bender has been already made once by the ‘make it extreme’ team, the particular construction was not affordable by anyone as more specialized machines were needed to be made than the ones that can be found in any home. Therefore, this our 56th construction is more user-friendly to everyone, is relatively affordable, is extremely useful and it will fill with feelings of joy and satisfaction the people who want to spend their time productively. 

Fumos, são um problema, tanto com a Soldadura, como em muitos processos, na Oficina.
Eis uma ideia bem bacana, que sai barata, e vos poupa na Saúde, também:

$5 Powerful DIY Fume Extractor
I love making projects from scratch whenever possible, so soldering comes in the process.But soldering needs to be done in a well-ventilated Environment or a Fume Extractor should be used.
But Why is soldering so dangerous?
Flux generates the visible fumes seen during soldering. Exposure to rosin can cause eye, throat and lung irritation, nose bleeds and headaches. Repeated exposure can cause respiratory and skin sensitisation, causing and aggravating asthma. Rosin is a serious occupational health hazard.
But Fume extractor are really expensive like 70$ which beginner like to skip because of the price.
In this instructable, I will share what I used for so many years.This project cost around 5$ but works like a charm.
Not only it can be used for soldering only it can also be used for 3D Printing ABS, as it fumes and also toxic in nature. 

Com este App, o Makerpad, podem imprimir em 3D, fazer um Scan 3D, Objectos 3D, e até cortar por Laser CNC, a partir do vosso Smartphone!
O que é uma forma porreira dum Engenhocas se poupar a muitas dores-de-cabeça...

Peter Smith 
Purdue University’s researchers in Indiana have collaborated with the National Science Foundation to start an innovative platform that enables your smartphone to assist in 3D printing, allowing you to create some unique designs. This new platform is known as Makerpad – an inventive and advanced platform specifically for beginners. The patents of this platform are presently pending by the Purdue Research Foundation’s Office of Technology Commercialization.
Karthik Ramani, project leader of this venture said that manufacturing and product design are the purviews of professionals and enterprises like artists and engineers. On the other hand, Donald W. Feddersen, a professor of Mechanical Engineering at Purdue University explained that many people have ideas but only a few of them have guts to implement those ideas into a reality. This is actually a waste of available creative human resources and the economic prospects of the world economy.
This platform can even be used by amateur users to create 3D prints, 3D scans, 3D models and laser cuts. With the network accessibility and free technology available, anyone can easily attempt to become a designer. However, 3D printing involves some fundamental skills as well as tools. Hence, many designers are simply not capable of using 3D printing technology effectively. But with the help of this platform, “Makerpad,” users can now easily 3D print several designs.

Quando se depararem com um problema mecânico, é sempe bom terem uma fonte de Mecanismos que poderão resolver o que vos está a empatar a criação da Engenhoca...
Já vos falei aqui duma data de Sites com Mecanismos, como os Museus Reuleaux, uma Colecção de Animações 3D, e os Vídeos de Thang, mas pode-se dar o caso de que nem nesses Sites esteja o que precisarem, por isso, cá vão mais 507 Mecanismos, neste Site, 507 Movements: 

This is an online edition of the classic technical reference Five Hundred and Seven Mechanical Movements by Henry T. Brown.
This site contains the original illustrations and text from the 21st edition of the book, published in 1908. It also includes animated versions of the illustrations, and occasional notes by the webmaster.
The animated versions are not yet complete. They are identified by color images in the thumbnail pages. To keep up with developments on this site, use the Twitter Follow or Facebook Subscribe links below.
Animation system
The animations are implemented with a custom JavaScript library, which uses an HTML 5 Canvas element. You must have an up-to-date web browser to view them.
The JavaScript library is highly experimental and is proprietary for now. We may polish and release it as open-source at some point, but at present it’s far too specialized to be generally useful.

Para quem tem acesso a uma cortadora por Jacto de Àgua, e a um Torno, podem construír esta pequena Maravilha, e terem assim a vossa própria Prensa Manual:

Hand+Ink Letterpress in Aluminum
I recently had some time to revisit my mini letterpress project. After using the earlier design for awhile, I wanted to redesign the press to eliminate all 3D printed parts and make it out of metal for increased strength. This press can be made out of MDF or Aluminum with a few quick dimension changes. The files attached are for 5mm thick aluminium sheet. Almost of of the parts can be cut with a laser cutter/waterjet/cnc, although I did use a lathe to make the wood handles and the top cross bar. All dimensions are in mm since I have recently moved to Sweden.