segunda-feira, 6 de julho de 2015

Inventar não é Brinquedo! E imprimir 3D a 5 Eixos, uma Resina mais resistente, e Aspirina feita em casa!

Inventar, não é, como pensam alguns, estar deitado, de pança pró ar, à espera das ideias, e eis um Inventor, Jornalista e especialista em Dependência Química, a explicar-vos isso mesmo:





“Ser inventor autônomo não é brinquedo”

Paulo Gannam – Jornalista, especialista em dependência química e inventor 
O mineiro Paulo Gannam é formado em jornalismo pela Universidade de Taubaté e especialista em dependência química pela Universidade de São Paulo. Já teve alguns trabalhos nessas áreas mas como bem diz, sua paixão é pela criação, por patentes, negociações e comercialização de produtos no mercado. Seu objetivo é patentear o máximo de produtos possíveis junto aos órgãos competentes e negociá-los com o meio empresarial, que costuma estar em busca de novas tecnologias. O legado que Gannam gostaria de deixar são as suas ideias, transformadas em produtos para o mercado. 
..
A sua capacidade de inventar surgiu em 2005, como foi que isso se sucedeu?
Exato, mas foi um processo. Àquela época, estava no terceiro ano de jornalismo. Tinha um blog e redigia artigos sobre os mais variados temas. Certa vez, postei um artigo intitulado “Obra-prima de borracha”, que destacava os benefícios de se trazer a galocha de volta ao mercado, dando-lhe novas feições e design, pelo benefício em evitar que nossos pés e calçados se molhassem durante as chuvas. Essa ideia surgiu depois de eu ter sido apresentado à galocha por um tio, o Toninho Gannam, que a trouxe de seu sítio. Estava bem acabada, mas trazendo benefícios que eu sempre achei que nossos calçados deveriam voltar a agregar. Creio que ali estava começando a nascer este verve inventivo. Anos mais tarde, sem exercer a profissão jornalística, o que eu mais fazia era tomar açaí na tigela nas horas vagas.








Dica de Eddy de Ridder, se se estão a interrogar, para o que é que servirão 5 Eixos, para imprimir em 3D, eis um Vídeo que explica e bem, numa só frase...
Nada de suportes, nem de Impressões "impossíveis", por falta deles!



5-axis 3D printing support test

Øyvind Kallevik Grutle

This is the result of my master thesis at the University of Oslo, at department for robotics.
The printer is a modified RepRap Ormerod, with two added axis (A and C).
This master thesis have been a proof of concept, but since it was working I decided to try two hypotheses, is it possible to print without support (what you see in this video) and is it possible to make a smooth finish on a surface which are in another plane than the xy-plane (what you see in the two other videos).
All the g-code for these parts are basically hand written (with the help of java). I have been using spherical coordinate system to compute the paths and therefore all the parts are round.
With the exception of the 5-axis system that moves along the y-axis almost all the parts are from the RepRap Pro Ormerod 1.
The videos are at 40X speed.  
https://www.youtube.com/watch?t=10&v=Y07vC_qE3sw









Eis uma Resina que aguenta muito, o que faz da Impressão SLA algo de mais útil, pois esta, dá-vos, para além do acabamento impecável das Impressões SLA, a Resistência análoga ao ABS...
É bom! 




Formlabs Releases Tough New Resin for 3D Printing

Matt Stultz 
One of the criticisms often leveraged against SLA 3D printing is that the resins used are not strong enough for real world, useful applications. Formlabs has been steadily releasing new materials that each provide a new property to their users. Now, Formlabs has added a new resin to join Clear, Flexible, and Castable: Tough.
Formlabs claims that their Tough resin for their Form 1+ printer, will exhibit similar strain and impact resistance as an ABS printed part. They have provided multiple sample images showing their new resin being put to use in applications not usually seen in SLA prints.









Inventar, ou apenas ser-se um Engenhocas, dá-vos o quê?

Para além de muitas alegrias, MUITA DOR-DE-CABEÇA!

Eis algo que podem fazer, em vossa casa, que os tempos estão incertos, a vossa própria Aspirina, o que também tem uso como prevenção de Ataques Cardíacos, e muito mais... 







Survive in style (5) - DIY Aspirin

bricobart 
One of my worst ennemies - even more worse than ice cubes or coca cola that try to ruin my single malt - is something really vicious.
Headache. Since many years it's one of my closest - unwilled - friends. When I'm stressed it's there, when I'm tired it's there, when I drink too much it's there and when I'm drunk because I've been tired of being stressed, it's even more there.
Instead of attacking the cause of this pain, I prefer blowing the result. Totally me.
And so I'm taking pills, sometimes. Quite innocent stuff, but nevertheless a few hundred pills a year...
I know, it IS really bad and one day these chemicals are going to do bad things to me. Maybe The Evil is already there.
Whatever.
One of the most classic methods to fight pain, and headache in particular, is aspirin.
Since I like to think two steps in advance, I know that whenever I run out of pills in the outdoors, there's always a way to make this medicine by myself. Easy. 







sexta-feira, 3 de julho de 2015

Ciclone em 20 Minutos! Mais um Rádio de onda curta com 3 transistores, Steppers com Arduino, e Stepper ainda mais barato!

Este Instructable vai para todos os Engenhocas, Carpinteiros, Modelistas, e o que mais seja, que acumulem pó nas suas Oficinas...
Em 20 Minutos, constroem este Separador Ciclone, que não vos encherá mais os Sacos dos Aspiradores, pelo menos, não tão cedo!
É bom!


Super easy cyclone!

shopbuilt  
 I had a need for a cyclone separator for my CNC because it keeps plugging the filter in my shop vac. I didn't want to spend a bunch time building one so I though I would put one together as simple as I could and checks its efficiency. I think it turned out pretty good for a total of 20 minute work time to build it.
http://www.instructables.com/id/super-easy-cyclone/ 







Para todos os Rádio-Amadores, e Engenhocas da Electrónica, cá vai este Brinde, um Rádio de Onda Curta, que podem construír com 3 Transistores, e pouco mais: 

  
  

Three Transistor Short Wave Radio

netzener 

The 60's and 70's were the golden age of electronic kit building. The novice had a great many educational kits to choose from that taught basic skills and electronics theory while assembling a device that could do something useful or entertaining. An advanced builder could use "sweat equity" to inexpensively obtain popular electronic products like HiFi stereo systems, color televisions, CB radios, and automotive test equipment.
Today there are still quite a few electronics kits available for education purposes, but rapidly evolving features and shrinking components ended the consumer electronics kit business. I would have loved to have assembled some of the products that were popular in the 70's, but unfortunately most of the companies that made all those wonderful kits were gone when I began my career.
In honor of a great set of educational Radio Shack electronics project kits available during the 60's and 70's, I've redesigned the original Science Fair brand Three Transistor Shortwave Radio (Catalog #28-110) using modern components still available from electronics component re-sellers in the US. All of the components in the updated kit can be found on Amazon. There were many things Radio Shack did extremely well during its prime. For the nostalgic or the enthusiast who would like to build an updated version of this classic radio I've included schematics, parts information, assembly documentation, and pictures of a completed and tested Three Transistor Short Wave Radio based on the original from 1968.
Visit www.netzener.net for more information! 



 





Têem um Arduino, e querem usá-lo para ainda mais um fim imprevisto?
Pois podem pô-lo a controlar um Motor Stepper, pode ser um daqueles que sacaram, ao desmontar mais uma Impressora...

Só porque sim! 

MUÁHÁHÁHÁ! 




Controlling a Stepper Motor with an Arduino

Maximous 
This tutorial will show you how to operate a stepper motor that was salvaged from an old printer with an Arduino.
 A stepper motor consists of two main parts, a rotor and a stator. The rotor is the part of the motor that actually spins and provides work. The stator is the stationary part of the motor that houses the rotor. In a stepper motor, the rotor is a permanent magnet. The stator consists of multiple coils that act as electromagnets when an electrical current is passed through them. The electromagnetic coil will cause the rotor to align with it when charged. The rotor is propelled by alternating which coil has a current running through it.
Stepper motors have a number of benefits. They are cheap and easy to use. When there is no current send to the motor, the steppers firmly hold their position. Stepper motors can also rotate without limits and change direction based on the polarity provided. 





 




...E se não tiverem um Arduino, nem Steppers, então, façam um Controle vocês mesmos, com Motores que fica bem mais barato.
Notem que neste controlador, não podem inverter o sentido de rotação dos motores, mas tudo é tão barato, que bem podem pôr 2 motores, em contra-rotação, funcionando ora um, ora o outro, para isso! 



Motor Controllers for Cheap Robots 2
JayWeeks  
Hello and welcome! For those of you who haven't read any of my I'bles before, and for those of you unfamiliar with my For Cheap Robots series, I'm all about building robots on the cheap using simple materials that you can find around your house! If you've ever wanted to get into robotics, but don't know what you're doing and don't have the money for an expensive robotics kit, you are my kind of people!
Previously in this series, I covered how to make some super cheap wheels for your motors, but those motors can't go anywhere without some power! Problem is, most micro-controllers won't be able to power very many motors all at once, and certainly not any large motors. To solve this, we use a sort of electronic switch called a transistor. This allows the micro-controller to turn on and off the power to the motor very easily! That way the micro-controller still controls the motor, but the power comes from somewhere else!
This was the simplest circuit I could come up with for controlling motors. It won't let you change which direction the motors turn, but it will let you turn your motors on and off, which is enough to do some simple things.
 





segunda-feira, 29 de junho de 2015

Novo Método de Impressão 3D! E Woodworking Tips, um Arduino feito em casa, e ainda mais uma Impressora 3D feita por vós

Dica da 3D Printers Online Store:
Por ser baseado num Gel que endurece com Ultra-violetas, exibe a facilidade de impressão da Impressão de Filamento, e a resolução incrível da DLP, e ainda, com um Volume enorme, e uma rapidez fantástica, parece-me que ISTO é mesmo o Futuro do Fabbing:



MASSIVit 3D: GDP Gel Dispensing 3D Printing technology  
When we think about 3d printing more often than not we are thinking about a small desktop printer, but not everything can be printed on these small printers. If we have to print larger models we have to slice it into smaller parts so that it can fit the build base of the printer. This is actually a crude stop gap solution to a problem at hand, but FDM 3d printing being extremely slow and the inability to control failed prints makes printing large objects a real task at hand. The Biggest 3d printer that we know of is the BigRep ONE.2 which has a 1M³ working volume, but it still inherits the shortcomings of the FDM printing technologies we discussed earlier. So is there a solution at sight? There certainly is and it’s coming from the promised lands of Israel. - See more at: 







Ora vejam lá... Se isto não é uma solução bacana também para o Laser Cut!
Pois é, pode-se aprender MUITO com estas Dicas de Carpintaria, da Woodworking Tips, que serve também para o Fabbing, e Engenhocas em geral: 




 Wedged Mortise & Tenon
 
Tap, tap, tap. The wedges go home, the glue squeezes out and a big smile lights up your face. “This joint isn’t coming apart for a hundred years,” you say. “It’s as solid as a rock!”
 






E se têem pouco dinheiro disponível, mas precisam dum Arduino, porque não, fazerem o vosso próprio Arduino, em casa?
É o que podem fazer com este Instructable: 



Beeduino : Homemade Arduino on a Budget 
bjkayani
 
Hey what the cost of this blue board thingy, "Arduino" i think its called?? Well the cost is about $30 per board. Woah $30 for just this simple circuit. Whats so special in it? Well nothing actually. Its just a simple open source development platform with awesome I/O and programming potentials. Open source eh? Doesn't that mean we can make our own possibly much cheaper? Well i think so....
These were my thoughts when i got into the world of ARDUINO. After having bought many original and chinese arduinos i have finally decided that its time for me to make my own arduino. Now i wouldn't recommend people starting arduino to make this but people who have worked with arduino even a little should try this. 
 




 




Como não quero que vos falte nada, aqui vai, ainda mais outra Impressora 3D para fazerem nas vossas Garagens, Oficinas, ou Cantinhos das Ferramentas... 




A low cost 3D printer with basic tools
hschlech
 
Introducing the 'Ad(str)apto'
Welcome to our 1st attempt at doing an instructable. This is a cheap, quick and very 'hackable' bootstrap printer loosely based on the reprap 'Adapto' (http://reprap.org/wiki/Adapto) The print volume of this printer is approximately 8 litres (200x200x200mm), but could easily be adapted to print a bigger volume. 
 






 

quarta-feira, 24 de junho de 2015

Fresa CNC de 5 eixos, por 3.300 Dólares! E uma Impressora 3D por 299, um Aspirador impresso em 3D, e um Retrato dum Inventor!

Isto é incrível, podem agora fazer objectos complexos em Cera, Madeira, Plásticos E Alumínio!
É uma máquina topo-de-mesa, mas não se esqueçam de que podem fazer peças grandes em segmentos, e desenhar as Engenhocas de forma a usar Tubos e Chapas nas partes menos complexas...
Impecável! 



Pocket NC - The first 5 axis CNC mill for your desktop.

Pocket NC 

What is the Pocket NC?
The Pocket NC is a 5 axis desktop CNC mill. 
Now let’s break down exactly what that means: 
Milling Machine: Today, most people are familiar with the concept of 3D printing which is an additive manufacturing process. The part is built up from the base by adding a layer of material at a time. Milling is a subtractive process where material is removed from a solid piece of stock using a sharp tool to reveal the part inside. 
CNC: CNC stands for Computer Numerical Control. This means that the machine is controlled by a series of codes and numbers output by a computer. These codes can either be output by software, or written line-by-line in a text file. For more information on the software you need, keep reading. 
5 Axis: If you are having a hard time visualizing what “5 axis” could mean, don’t worry. It’s a lot more simple than it sounds. Conventional milling machines typically can move in 3 linear axes at a time. An example of this would be a milling machine where the part fixed to the table can move back and forth in two directions (X and Y axes) and the cutting tool can move up and down (Z axis). The extra 2 axes of movement are rotational, which for the Pocket NC means that the part can also rotate about the X axis (A axis) and about the Y axis (B axis). The main advantage of this is that you can now machine on multiple faces of the part without having to refixture it. 







Dica de Peter Smith, e notícia da 3dprint.com, têem esta Impressora 3D portátil por menos de 300 Dólares, para venda:





New High Quality Portable Afinibot Creality 3D Printer Launches for Just $299

WHITNEY HIPOLITE 

The majority of 3D printers are large, clunky, and somewhat fragile machines. The idea of moving them back and forth between rooms, or in and out of a closet just isn’t very feasible. We have seen several “portable” 3D printers come to market over the past couple years, but most are expensive or simply don’t do what they say. This may be about to change though, with the new Afinibot Creality 3D printer now available at 3D Printers Online Store.
The new 3D printer kit features a decent size build volume of 130 x 150 x 100 mm and can print with a layer resolution of 100 microns. It is built with a sturdy aluminum and acrylic frame, and weighs just 4.9 kg (approximately 10.8 pounds). Best of all, it’s priced at just $299 with even larger discounts available for higher quantity purchases.









Como o lixo se acumula à volta do PC duma forma assustadora, eis uma simpática ideia para usarem as vossas Impressoras 3D, que vai agradar à Patroa, um Aspirador que funciona alimentyado por uma saída USB do mesmo Computador:




[Updated] 3D Print a Mini USB Vacuum Cleaner

loboat

My purpose to design a mini USB vacuum cleaner was the consequence of the mess I was confronted to, after making stuff for hours with plastic, wood, and electronic parts on my desk.
I needed a small and efficient device to clean the mess, so I decided to design and make my own.
This mini vacuum cleaner is very helpfull ! I can now easily clean my laptop keyboard, my desk, and all the small fragile items I collect. 







Dica importantíssima da RS Components, eis a explicação do que significa ser Inventor, não um Cientista de Filme Infantil, mas um homem do Mundo Real, que resolve um Problema, de forma viável e económica!
Será que em Inglês, as nossoas "Autoridades" irão acreditar que a Invenção não é mais um Cambalacho Elitista e Corporativista do Estado-Novo, SÓ entre Universiades e Empresas, e NINGUÉM MAIS, só por causa duns "estudos" feitos por uns Burocratas Falhados, em Bruxelas, a Capital da Idiotice?



GripIt Fixings Jordan Daykin Portrait of an Inventor
RS Components
View our stock of GripIt Fixings at RS Components http://bit.ly/1bJFL3h
Entrepreneur and inventor Jordan Daykin talked to us about his journey creating GripIt Fixings, and successfully pitching the product to Deborah Meaden on the BBC’s Dragons’ Den television programme.
GripIt Fixings are the world’s strongest plasterboard fixing supporting a weight load of up to a massive 180kg. 
For more on Jordan and others like him, follow us on Twitter http://twitter.com/RSComponents , Facebook http://facebook.com/RSComponents .
 













terça-feira, 23 de junho de 2015

Peças que encaixem, Pulseira de Acessórios, 3D de encher(!), e mais truques para a Impressão

Quando fazem alguma coisa com mais de uma peça, é de ver se essas tais peças encaixam, para não ter problemas dos grandes...
Ainda mais quando encomendam o trabalho fora! 
Pois aqui está mais uma achega de como o podem fazer, no Programa grátis de CAD, da eMachineShop:





How to Assemble Your Parts For a Perfect Fit 
When using the eMachineShop CAD software to design parts that fit together, it's important to know how to make sure they will really fit. It's easy to do in eMachineShop's CAD Software. 

 






Eis algo para levar para o alto dos Escadotes e Telhados, etc. para não ter de levar uma caixa de Acessórios, uma Pulseira de Acessórios!
Ora aqui está uma boa sugestão para terem algo que imprimir, e sigam o exemplo, que até tem um Link para um Instructable: 



3D Printed Tool WristBand

Designed by MrFSosa

Please do me a favor vote for me at this instructable contest
3D print an entire tool wristband in one or two printjobs. No screws or much assembly required.
Save your self 200-500 dollars
direction or printing needs to be adjusted to match pictures.. print it at 50% infill and insert the drill bits while still warm for best results.







Dica de Eddy de Ridder, eis impressão 3D, que é 4D, pois é para Músculos Artificiais, por isso, tem de ser  extensível...
De forma que é impresso o Músculo por cima dum Balão de Silicone! 
O que eles imaginam! 



3D / 4D printing inflatable structures 
Fergal Coulter 
Artificial muscle membranes are created by spray depositing silicone on to a air-permeable shape. The silicone membrane is stretched by inflation, 3D scanned and then printed upon.
https://www.youtube.com/watch?t=12&v=Qmuf_6h7Kl8






Como isto da Impressão 3D parece que dá muitas dores-de-cabeça, até de domesticar o Bicho, cá vão estas Dicas sobre como ter Impressões impressionates!





3D Printing HacksJubal117
Entering the world of 3d printing can be a little intimidating for a non-engineer or young gun trying to earn his salt. This instructable will give you some tips and tricks from an engineer who has used an Ultimaker original for a little over 6 months. My goal is to take the issues I faced in 3d printing and guide you in solving them. With that introduction lets jump into some steps to get you printing your first part (which in my case was the Ultimaker Robot!).
http://www.instructables.com/id/3D-Printing-Hacks/




sexta-feira, 19 de junho de 2015

Uma Impressora DLP por 60 dólares! Outra por menos de 500, mais Crowdfunding em Português, e

As Impressoras DLP são as que resultam numa Impressão mais fiel ao modelo, nada das "escadinhas" das Impressoras FDM, de Exrtusor e Filamento, e agora, podem construír uma, com 60 Dólares, o que é fantástico!
Com umas tralhas que praí tenham, um Projector Vídeo em 2ª mão, e um DVD velho, mais isto e aquilo, vão poder fazer esta pequena Maravilha: 




Chimera: $60 DLP High-Res 3D Printer

matstermind

I have been on a hunt for the past several years to find a cheap and simple, yet moderately high resolution 3D printer. I had 3 different 3D printers partially constructed when I heard about the amazing technology of DLP Stereo lithography (SLA) printers. I have finally found enough parts at the right price to construct a fully functional printer capable of amazing quality with spending less than $100. Top down DLP printers in their simplest form have only one axis of motion, a video projector, and minimal electronics. They do not require a heated or perfectly level bed, there is never a clogged or wrong temperature in the extruder as it does not use an extruder. And the resin used has a comparable price to FDM printers.
The chimera (ky-meer-a) is a mythological creature that is made up of 3 different animals, this printer is made using the recycled/modified parts of 3 different categories (projector, toys, and old computer stuff), hence the name.
I am always looking for constructive criticism, let me know if you think i can improve on the project, or the instructable! 
http://www.instructables.com/id/Chimera-60-DLP-resin-3d-printer/








E se quizerem uma Impressora capaz de imprimir objectos maiores, têem esta, que fica um pouco mais cara, mas faz com que a diferença valha a pena!
E, francamente, é bem mais sólida.





"Little Dipper" SLA/DLP 3D printer for under $500 (projector included)

marshallpeck


A brief overview:
This Instructable is about building a simple yet versatile resin (SLA) 3D printer that uses a cheap DLP projector to build the part from the "top down". This orientation of the light source is similar to other large scale industrial SLA machines. It has some advantages in simplicity, scalability and disadvantages in minimum feature size and print time.
This version build is budget conscious, has a low part count, can easily be upgraded and scaled in size. The entire 3D printer (projector and resin included) can be built for just about $500 or less which makes it one of the cheapest bang-for-your-buck 3D printers using SLA resin out there.
There are many good Instructables and resources that contain more exhausting detail about DLP resin 3D printers and background information. If you are interested in learning more about this http://www.buildyourownsla.com/forum/ will be one of your best community resources for knowledge relating to the topic. 
http://www.instructables.com/id/DIY-high-resolution-3D-DLP-printer-3D-printer/










Dica do nosso amigo José Abrahão, eis mais um site de Crowdfunding que fala esta mesma língua, de origem Brasileira, tomem nota.
E esta tem uma particularidade, a de vocês conservarem os fundos acumulados, MESMO se não atingirem a Meta pretendida!
É bom!



Kickante 
Dando vida a ideias, sonhos e projetos com crowdfunding. 
Lance sua campanha de crowdfunding e a primeira contribuição será por conta da Kickante. É INÉDITO e EXCLUSIVO!
Arrecadar fundos com a Kickante é muito mais fácil
Nós fazemos a primeira contribuição para sua campanha! Campanhas "Tudo ou Nada" ou "Flexíveis" (leve o que arrecadar, independente da sua meta)! 





.. E uma proposta que não podem recusar, um Drone Kit, para transformar não importa o quê, num UAV, um Projecto tão maluco, que TEM de ter muitas utilidadfes práticas, eventualmente...
Em que ninguém tenha pensado! 
LOL 








DIY (Drone It Yourself) Kit v1.0

javl

The DIY (Drone It Yourself) v1.0 kit offers you the opportunity to turn any object into a drone (or technically, an UAV). The kit consists of multiple parts that are easy to assemble and can be attached to a wide range of different objects.
For more advanced uses, you can take the original designs and alter the kit by making your own custom clamps or add-ons as needed.
The plastic parts have been 3D printed in ABS. The control unit contains a receiver, four ESCs, a bluetooth module and an Flight Controller. I've provided a list of the hardware and electronic parts I've been using, but feel free to try your own combination. 






terça-feira, 16 de junho de 2015

Freaks3D, uma Oficina no Quintal, como encontrar o Centro, Bricolage, e Bitmovel

Dica do nosso amigo Eddy de Ridder, cá está mis uma Impressora 3d, esta mais portyátil, fácil de operar, e barata...





[Pre-Order] Freaks3D - a reliable and affordable 3D printer. Take It Everywhere !

FREAKS3D PRINTER
As makers, we love 3D printing.3D printing makes our lives easier. We use it to print mechanical parts, tools, prototype our product, verify our assumptions or just make gadgets we love. It’s easy, fast and low cost.
We are amazed by 3D printing technology. However, the 3D printers on the market are far from satisfying. Most of them are bulky, not light-weight enough to be carried around, hassles to use, plus price ridiculously high. We want a reliable, affordable and portable 3D printer that we can take everywhere. Moreimportantly, it should be easy-to-use for general consumer crowds like artists/designers, educators, household wives, even children who are curious about creation. 










Quem tem um Quintal poderá ter uma Oficina, com este Instructable, para consertar o Carrito, e / ou ser um Fabber a trabalhar com condições, com este Instructable...



2 Car All-Metal Workshop For 2 Grand

gizmologist

Overture: A Tale of Two Cards...
It began as a blueprint on an index card...
It began with a Lowe's credit card...
Based on a True Story,
Building Steel!
You say you'd love to have a two car garage, but you can't afford it? Or you need a workshop to build your dream airplane/car/boat/World Domination project? Here's a 400 square foot (20 X 20) all-metal shop for a little over two thousand dollars (A slap in the face to the bank!), built entirely from common parts available at any home improvement center.
This shop fits our budget because it's built without using a concrete $lab, expensive framing or siding. It's based on the old Quonset Hut design dating to World war II, although the construction method is different. The original Quonset Hut was a 20 by 48 foot hemicylinder (half cylinder); this one is slightly less than half the size of the original. Anybody that knows anything about structural design will tell you the dome is the strongest shape possible for a building - Buckminster Fuller made geodesic domes a household word. But domes are hard to build, and don't make the best use of floor space. The Quonset Hut is a "dome" in one dimension, while still maintaining a rectangular floor plan. It's much easier to build, because there is no need for tricky angles (as a geodesic dome requires) or compound curves, and it's still very sturdy. 
http://www.instructables.com/id/2-Car-Backyard-Shop-For-2-Grand/







Uns sabem, outros não, outros já esqueceram: 
Uma maçada comum na vida dum Engenhocas, é achar o centro duma Circunferência, e eis como se pode fazer, com Instrumentos que têem bem à mão, o que é bem bom!




Skill Builder: How to Find the Center of Any CircleJordan Bunker  If you need to drill a hole in the center of a circular material, you’ll have to find it first. You could buy a fancy center-finding tool, or you can use simple measuring tools and these easy methods to mark the point. 









Ora eis aqui um belo Site em Português, com Vídeos que fazem de qualquer um, um Às da bricolage, vejam só como se livram de Garrrafas de Vidro, a construír uma estante!




CRIAR UMA ESTANTE TRENDY COM GARRAFAS (VIDEO)
Vamos construir uma estante com garrafas recicladas e tábuas de madeira. Para isso vamos utilizar: Pattex Não Mais Pregos Invisível, garrafas, tábuas de madeira, um pano, lápis e régua. 








Mais uma Loja com Impressoras 3D, peças, e tudo o mais, que isto de Impressoras, é bem melhor comprar numa Loja online onde lá esteja o que for sendo preciso, mais adiante.
Que isto não é só comprar uma máquina, há o Filamento, e uma data de peças adicionais...
Podem também de lá encomendar um Kit da Impressora Prusa, por menos de 500 Euros:





SOBRE NÓS
 
A satisfação do cliente é o mais importante. A necessidade de uniformização de produtos e expedição de encomendas, deu origem à fusão de Balofo.pt e MarcoCruz.net com a Bitmovel em Abril de 2014.
Hoje em dia, a Bitmovel possui um alargado leque de clientes, nomeadamente no sector automóvel, arquitectura, comércio a retalho e indústria transformadora.
Abdicando de loja física e dos custos inerentes á mesma, a Bitmovel consegue obter e garantir os preços mais competitivos do mercado. 
http://bitmovel.pt/



[Kit] Impressora 3D - Prusa i3

Kit completo com todos os componentes necessários e pronto a montar.
Dimensões (X, Y, Z):
Impressora com bobine: 460 x 370 x 583mm
Impressora sem bobine: 460 x 370 x 510mm
Área de impressão: 215mm x 210mm x 180mm
Embalagem: 400mm x 400mm x 250mm
Resolução de impressão:
Muito alta: 60 microns
Alta: 100 microns
Média: 200 microns
Baixa: 300 microns
Velocidade de Impressão:
Recomendado: 50mm/s
Máximo: 80mm/s
Mecânica:
- Frame de alumínio pintado (na cor escolhida)
- Varões lisos cromados
- Varões roscados pretos
- Rolamentos LM8UU e 623ZZ
- Esteira Igus Energy Chain
- Acopulamentos flexiveis para eixo Z
- Base de nivelamento com 4 pontos de apoio.
- Base de impressão de mudança fácil, com clips.
- Ventoinha com rolamentos axiais 
 http://bitmovel.pt/produtos/impressoras/kit-de-impressora-3d-baseado-em-prusa-i3-detail.html