Impressora 3D feita em casa, em Portugal! E uma Dremmel DIY, Foguetes de açúcar(!), Reconstrucção Histórica, e Vigiância Nocturna

Um projecto feito em casa, e vão vè-lo, no fim, a imprimir, como se fosse comprado à loja, eis o que o nosso amigo Nuno Silva promete eventualmente oferecer como Open Source.

Portugal avança...

3D Printer "homemade" new concept (short version)
Nuno Silva

This 3D printer has a much lighter warm bed frame. The warm bed frame weighs 150g without linear bearings! The base and top are round because I reused these parts from an old project. This printer has a print volume of 200 x 200 x 200 At the last minute the printer is printing a frame for the warm bed of a 300X300X300 printer

https://www.youtube.com/watch?v=_Q6GCdMk_WQ

Algo de bem útil, e que podem fazer com as Ventoínhas dos PCs, um Dremmel feito em casa, com o motor Brushless que recuperam do centro das mesmas, depois de descarnarem o plástico...

É bom!

DIY Brushless Dremel Tool
DIY KING 00

Its been almost two years as I got my first batch of cordless tools, most of them were brushless so love the amount of power these tools offer.
With me scratching my head about what to built next I had an idea to built a brushless Dremel tool thats powered by those high capacity lithium ion batteries.
Well the idea sounds good but the challenge it to make that brushless Dremel tool without throwing a lot of money on parts and making the whole project as easy as possible.
So the goal is to built a brushless Dremel tool out of scratch. So get through this intractable in which I am going to show you how to make a Brushless Dremel Tool under just 15$.
Lets get building…

https://www.instructables.com/id/DIY-Brushless-Dremel-Tool/

Para uns momentos de diversão meio maníaca, mas inocente, nada como fazerem os vossos Foguetões miniatura a partir de quase nada, e porque não, usar isto como uma desculpa para imprimirem os Foguetes nas vossas Impressoras...

How To Make Sugar Rockets
The King of Random

How to make hobby rocket “sugar motors” using sugar and kitty litter, that shoot up over 2,300 feet high, and cost less than $0.50 to make.

https://www.youtube.com/watch?v=12fR9neVnS8

Para verem como se usa Impressão 3D, profissionalmente, para restaurar Máquinas que fizeram História, por Scan 3D, Impressão, e adaptação paciente, cá está este vídeo do nosso amigo Joel, do Canal 3D Printing Nerd:

3D Printing Repairs a 1920 Ruston Hornsby at Siemens UK Materials Solutions

3D Printing Nerd

While visiting Materials Solutions in the UK, I got to learn about a couple 1920 Ruston Hornsby car Siemens UK were restorying. Thanks to some 3d scanners, some cad software, and some highly talented people, they are able to replace functioning metal parts on the car - parts made in 1920 that you cannot find anymore! COOL!

https://www.youtube.com/watch?v=ek9BRcU7JSg

DIY Professional Open Source Night Vision Security Camera

Blackir

In this new tutorial, we will together make our Raspberry Pi open source video surveillance camera.
Yes, we are talking here about a real open source outdoor surveillance camera, capable of night vision and motion detection, all connected to our Jeedom domotic solution.
Now let's have fun. ^^

https://www.instructables.com/id/DIY-Professional-Open-Source-Night-Vision-Security/

Fresa CNC duma Impressora? E Filamento reciclado, Metamoldes, CNC feito em casa, e rádio-controle!

Podem cortar Placa, se tiverem uma Impressora 3D!

Usam-na, assim para terem 2 máquinas, onde tinham apenas uma, usando a vossa Dremmel caseira...

Porreiro. 

Cut Acrylic with a 3D Printer
Tech2C

Convert your 3D Printer into a light duty CNC mill! Here I show cutting acrylic with a Dremel style rotary tool attached to my HyperCube 3D Printer.

https://www.youtube.com/watch?v=IJxqXk-wdJw

No último post, falei-vos de reciclagem de plástico, desta vez, vou falar-vos de Filamento 3D feito em pástico re-aproveitado:

WHAT WE DO

Spools of 3D printing filament are currently sourced from scratch, but CLP has developed technology to produce this material from everyday plastic waste instead. Compared to other recycling processes, making filament from plastic waste (think cups or packaging) is small-scale, quick, and low-energy. CLP will make 3D printing more sustainable by bringing high-quality recycled filament to a growing market of consumers.
CLP manufactures ready-to-use 3D printing filament spools in Irvine, CA. The current product line includes PS, and we are actively working towards ABS, PP, PLA, and PETG. CLP sources the waste plastic from local Materials Recovery Facilities as well as direct waste generators such as local resorts and university campuses.

https://www.closedloopplastics.com

Moldagem em Silicone é do melhor que há, em preço e facilidade, e torna-se uma maravilha, se este Projecto continuar, um Programa que vos habilita a produzir moldes bem complexos, em 2 partes, a partir da vossa Impressora 3D!

Metamolds: Creating ideal 3D printed silicone molds faster and cheaper

Thomas

Silicone molding is an affordable production method that can allow you to make a series of identical objects for prototyping and functional testing. Until now, however, fabricating molds for casting complex objects required a lot of experience and also involved manual work, which made the process slow and expensive. Scientists at the Istituto di Scienza e Tecnologie dell'Informazione (ISTI-CNR) and the Institute of Science and Technology Austria (IST Austria) have developed a new tool for fabricating digital objects through reusable silicone molds. The tool automatically finds the best method to design the molds, and also delivers templates for so-called "metamolds": Rigid, 3D printed molds used to fabricate the optimized silicone molds.

http://www.3ders.org/articles/20180903-metamolds-creating-ideal-3d-printed-silicone-molds-faster-and-cheaper.html

...E se não quizerem usar a vossa Impressora 3D, para fazer uma Fresa CNC, como ali acima, bem, podem fazer esta máquina, de raiz e só para isso, com peças feitas em casa, impressas, algumas:

Homemade CNC with 3D Printed Parts - Redesign

Leon van den Beukel

This is the second version of my DIY homemade CNC. It's a complete redesign because of some issues that I've had with the first one. The main issue with the first version was that the wooden Y axis was getting warped (by moisture I guess). Also the bearings were too small and the aluminium X rails were not strong enough to carry the weigth. That's why I've switched over to use 20mm x 20mm square steel tubes for both Y- and X axis. I've designed the 3D printed parts with Fusion 360 and used Inkscape for the Y axis drilling template. To control the machine I'm using an Arduino UNO with GRBL firmware and an Arduino CNC Shield. There are plenty of tutorials to find on how to connect and use it so I did not show it in the video. Here are some useful links:

https://www.youtube.com/watch?v=24RslguGy58

E para terminar por hoje, um Instructable para tele-controlarem o que quizerem, usando o Arduino, ou o Pic, ou qualquer outro Micro-controlador!

RF Transmitter and Receiver

OEsirik

In this project, I will use RF modules with Pic 16f628a. It will be a short tutorial about rf. After you learn ho rf modules communicate with each other you can use these modules with pic microcontroller, ardunio or any microcontroller. I controlled RGB LEDs but If you can control many thing motors or relays.

https://www.instructables.com/id/RF-Transmitter-and-Receiver/

Uma Dremmel, do Aspirador? E Plasticina, Software para Corte Laser, um Lixadora de Disco, e Aulas de INVENÇÃO!

Pode não ter muita potência, mas também, uma Dremmel não é um Berbequim...

E é uma boa ideia para imprimir em 3D, uma espécie de dremmel, que aspira o lixo que cria...

Porque é accionada pelo Aspirador!

Fascinante.

E talvez inspire algum de vós a inventar algo, usando a Impressora 3D para algo de utíl e inovador.

Vão ver, que o Vídeo tem lá os Links com os Ficheiros 3D.

3D Printed Turbine Rotary Tool - CR10 3D Printer
JohnnyQ90

(3D Files on the Youtube Video's text space)

https://www.youtube.com/watch?v=Fj1gir4tJbU

Algo para fazer em Família, para a Criançada, e como é Verão e tempo de Férias, aproveitem.

Plasticina feita em casa!

How to Make Playdough (Play-doh
canida

Playdough (aka Play-doh) is easy to make at home, and fun for kids of all ages.  Here's how to make your own non-toxic toy with custom colors and fragrances.

This is the classic method that involves a bit of cooking on the stovetop - I prefer it because cooked playdough has a better texture than uncooked varieties.  If you want the kids to be able to do it all themselves, try this uncooked playdough recipe.

Warning:  Keep away from dogs and other pets.  Playdough smells like people food but contains lots of salt, and a hungry dog can eat enough to cause a dangerous salt imbalance.

https://www.instructables.com/id/How-to-Make-Playdough-Play-doh

Para cortar por Laser via CNC, é preciso fornecer à máquina um Desenho Vectorial.

Por isso, cá vai, através da Sculpteo, uma lista de 8 Programas que vos permitem criar um desses desenhos, cortesia da Sculpteo:

Top 8 Software for Laser Cutting
Nicolas Sadeghi

With the recent launch of our Laser Cutting service, it may be interesting to take a look at some of the software you could use to create awesome designs! As a reminder, the SVG format is the one suited for laser cutting, so be careful when creating your files. Without further ado, here is our top 8 of the best Software for Laser Cutting.

https://www.sculpteo.com/blog/2016/07/11/top-8-software-for-laser-cutting/

Continuando na linha de fazermos algo de bem útil, com as Impressoras 3D, eis uma Lixadora de disco, que podem fazer em casa, e assim, poupam tempo e dinheiro:

Benchtop Disc Sander

tomatoskins

Disc sanders are extremely useful tools used for rough shaping wood. When I needed a dedicated sander that could take off a lot of material at once, I was less than impressed with what was available. After not finding any disc sanders with the size and power I wanted in my price range, I started thinking of other options. Looking at what others have made in the past, most did not include a tilting work surface. This was a great design challenge that turned out better than I could have hoped!
If you are looking for your own disc sander and not impressed with anything available for the price, a homemade disc sander may be for you.

https://www.instructables.com/id/Benchtop-Disc-Sander

Não que os Inventores precisem de ajuda para inventar, até inventam sem querer, mas de certeza que precisam de aprender a fazê-lo duma forma mais organizada!

Por isso, cá vai uma série de Instructables, que formam um verdadeiro Curso de invenção:

 

INVENTION CLASS

This class will focus on the process of invention and how to create quality designs (products specifically) through a straightforward series of steps that provide – even for those who consider themselves to be uncreative – a path to new, innovative, well executed ideas.
Using empathy, iteration, imagination, and a dedication to problem solving (let your inner Sherlock shine!), you’ll follow along with me as I design a portable smartphone amplifier to illustrate the concepts I’ll be covering in each lesson.
Inventing is by no means a mindless paint-by-numbers process, but a systematic way of thinking – both in and out of the box – to create meaningful products that solve problems and have the potential to change lives for the better.
Let’s design a thing!

https://www.instructables.com/class/Invention-Class/

$99 3D Printer! Sim a impressora a 99 dólares não pára! E re-programar umRobot Industrial em MINUTOS, invólucros para a electrónica, Bits para a Dremmel, e ponhaam a 3D a render!

A Fabulosa Impressora 3D a 99 Dólares, está ainda melhor, agora, com a nova versão a uma resolução incrível, para o Preço:

You suggested. We listened.
Get ready for an even better STARTT.

The new batch of STARTT printers will be with us in three weeks and this is your chance to reserve your very own.

Improved STARTT features

Early buyers of the STARTT have spoken so we've made a few changes to improve your printing experience. 
    3D printed parts have now been replaced with injection moulded parts.
    The power supply has been replaced with a new, more reliable version.
    New, upgraded firmware improves usage.
New printing software profile
The new Cura for STARTT is now available! No more need to create your own profile. Download objects directly from MyMiniFactory within Cura for a streamlined printing experience!


http://mailchi.mp/imakr/the-99-printer-just-got-better-691665

Grandes Companhias por todo o Mundo começaram numa Garagem, agora, Grandes Indústrias poderão começar assim mesmo!

Estes super-bacanos, da TaskMate, vão-vos permitir comprar um Robot Industrial em 3ª mão, programá-lo em Minutos, como se estivessem a instalar um Sstema Operativo num PC...

E se um dia for preciso, re-programá-lo! 

Fenomenal.

 

Engineering the "Swiss-army knife of robots"
Kristin Hanson

The Cohen Translational Engineering Fund is helping promising startups like READY Robotics bring their innovative technologies to market as quickly as possible
...
"The Cohen funding allowed us to see how our product would solve problems in real-time, and how it could provide value, rather than just existing in the lab as a research toy," Guerin says.
Now READY Robotics' president and chief technical officer, Guerin calls the startup's product, TaskMate, the "Swiss-army knife of robots."

The company installs its software in a pre-made robot, making the machine easy to program and adjust — similar to how Microsoft made personal computing accessible to non-programmers with software like DOS and Windows. Once trained in the system, users can switch the tasks their robot performs in minutes or hours instead of days or weeks and cut out the cost of an outside programmer.
After using the Cohen grant to build and test a READY Robotics prototype, the technology earned a $100,000 Maryland Innovation Initiative grant from TEDCO — the Maryland Technology Development Corporation — and then raised $3.75 million in seed funding. Since opening for business officially June 2016, READY Robotics has grown to house 12 employees in its South Baltimore office, and Guerin and his team have kept busy testing prototypes with manufacturers and attracting more investors and customers.

https://rising.jhu.edu/cohen-fund-ready-robotics

Se andam às voltas com caixas para as vossas Engenhocas, aprendam com quem sabe, a desenhar os Invólocros de que precisam, e como precisam deles:

Your Guide To Making Electronics Project Boxes

DJ Harrigan

Introduction To Electronics Project Boxes
 

You’ve just made something great: It blinks, it whirrs, it speaks in tones, it’s voiced-controlled and it’s “cloud connected” (of course). And now this assembled heap of your own design is waiting on your desk for the final touch. If you want to keep your electronic creation alive for years to come, and draw fewer eyes as you ferry it through airport security, you’ll want to make a robust electronics project box to house and protect it.
The benefits of a small electronics case are clear: Your project will last longer, work more reliably and demonstrate a detailed attitude about showing off your work. It’s time to think outside the box when it comes to thinking about the insides of boxes.
But where to start? Where to finish? This post will guide you through the many different kinds of materials, joinery and aesthetic options for your electronics project enclosure.

https://www.ponoko.com/blog/how-to-make/making-enclosures-for-electronics-with-ponoko/

Eis uma Ferramenta lixadora para a Dremmel, que podem fazer em minutos, poor quase nada, para acabamentos sem despesas:

$1 Inflatable Sander Replacement DIY

johnzhu

Inflatable sanders are problematic, leakage being a problem with anything full of air. I decided to make a replacement from a piece of dowel, some velcro, and a bolt. The cost is less than $1. I really like the resulting round sander, and I hope you find it useful too.

https://www.instructables.com/id/1-Inflatable-Sander-Replacement-DIY/

Compraram uma Impressora 3D, e querem-na a trabalhar, para complementar os vossos ganhos?

Não querem comprar, mas querem ver se arranjam quem imprima umas coisitas em 3D?

Cá está a Treatstock, para que, localmente, possam resolver o voso problema:

Duma rede Mundial de Impressoras 3D, um App escolhe a Impressora mais próxima, e trata de encomendar o trabalho.

É bom! 

About Us

Treatstock is an online platform where consumers can search and purchase anything made through 3D printing. With 3D print services located all over the world, Treatstock can deliver a finished product in a turn-around time of just about a week. We also have many partnerships with online platforms which provide a countless number of designs to get 3D printed. We realize the potential 3D printing has to offer and we are glad to be a part of this growing industry.
Our core values include offering the best possible customer service and providing a quality product. We recognize that Treatstock has many competitors, and by ensuring exceptional customer service, we can set ourselves apart. Every order matters, every customer matters, and we take pride in treating everyone equally as if they are our only customer at the time.

https://www.treatstock.com/

Museu da Música Mecânica! E o FlashForge Inventor, uma DLP acessível, uma Dremmel de fazer em casa, e um Motor impresso em 3D!

Museu da Música Mecânica?

Eis algo de imperdível, para os lados de Palmela, uma Colecção de Caixas de Música, que só visto, obra do nosso amigo, o Prof. Luís Cangueiro, e só para terem uma idéia, visitem, para já esta Página, cheia de sons maravilhosos, de máquinas incríveis:

Mechanical Music Museum?

Something not to miss, near Palmela, Portugal, a Music Box Collection, you have to see, the work of our friend Prof. Luís Cangueiro, and just to give you a hint of the fun in that Box, here's ta page of the Bilingual Site, English version, too, hear the wonderful sound of some Glorious Gizmos:

A Colecção 

É constituída por mais de 600 peças que se movimentam por sistemas exclusivamente mecânicos, e abrangem fundamentalmente o período de finais do Séc. XIX até à década de 30 do Séc. XX, todas em estado de funcionamento. Trata-se de uma coleção particular, reunida ao longo de uma vida e representativa de toda a música mecânica. As diversas tipologias distribuem-se pelos mais variados instrumentos, desde as mais antigas caixas de música de cilindro de madeira ou de metal às mais recentes e populares grafonolas. É um privilégio podermos ver, ouvir e sentir peças centenárias que poderemos interpretar como um sinal da vida do homem através dos tempos, a expressão da sua cultura, a manifestação livre do seu poder criador.

http://museudamusicamecanica.com/a-colecao/

Eis uma Impressora 3D didáctica, com recuperação após paragem, opção de dupla cabeça de extrusão, câmara para visionamento da Impressão e mais uma data de coisas bos:

FlashForge Targets Education With Inventor 3D Printer LineTyler Koslow 

FlashForge has unveiled their latest 3D printer line. It includes the Inventor, a desktop printer geared towards educational use.

Like many other Chinese 3D printer manufacturers, FlashForge has thrived by balancing its efforts between affordability and performance. At the recently held Inside 3D Printing New York conference, the company was on the scene with their latest product line.

The new Inventor series is comprised of two different desktop 3D printers, both of which seem exceptionally intuitive. The Inventor is engineered for the educational sector, while the “II” 

model is said to operate with the intuitiveness of a smartphone

...

The build volume of this printer is 230 x 150 x 160 mm, and even includes dual extrusion via a MK9 extruder head. This allows for multi-color prints, as well as use of soluble support structures. It’s compatible with PLA, PVA, ABS, HIPS, and other speciality materials.

This new printer is also equipped with a heated build plate, while offering 0.1 to 0.4 mm layer thickness.

https://all3dp.com/flashforge-inventor-3d-printer-series/

Grande volume, acessível, cerca de 1600 dólares, e já à disposição no fim de Maio, eis um sonho de Impressora DLP, que imprime numa resolução incrível:

D2K Plus - Affordable DLP 3D Printer

Large Build Volume - 2K Resolution - Soonest Delivery in May, 2017 

To continue our success in the campaign "D2K Illuminate 3D Printer" in 2016, now we are glad to launch "D2K Plus 3D Printer" which is designed for those who demand larger size of printing, the build platform is much larger "198 x 120 x 150mm" whereas D2K Illuminate is only 121 x 68 x 130mm.  "D2K Plus" could satisfy most of designers or gadget lovers to accomplish their great ideas.  Not only large print platform but 2K resolution is kept unchanged, this is indispensable device for your development job . 

It's time to upgrade your printer to DLP technology, it brings along with lots of advantages that get rid of daily maintenance and fine-tuning. 

Our considerate design of "D2K Plus", you could be very easy to make further maintenance or proceeding with future upgrade by yourself.  Either electronic module or UV resins you can buy those replacement very easily in your local market or get it from us.   

https://www.kickstarter.com/projects/1037397144/d2k-plus-affordable-dlp-3d-printer

Já não há desculpa para não fazerem aquela engenhoca que imaginaram, por não terem uma Dremmel, façam esta, m casa, por cerca de 10 Dólares...
É bom! 

$10 DIY Dremel /RotaryTool

geekrex 

A Rotary Tool is perhaps the most used tool. It can Cut, Grind, Sand, Polish, Engrave with the Different types of bits.This small little DIY Dremel is easy to hold and cut metal, Acrylic, Drill PCB. Sand And Engrave too.

It is Easy to make and is very powerful.

It can work both with an adapter or with any battery Lipo, Lead Acid.

Mostly It will come really handy for future projects. 

https://www.instructables.com/id/15-DIY-Dremel-RotaryTool/step2/Designing-the-Enclosure/

E acabamos, por hoje, como começámos, com Maravilha Mecânica, desta vez...

Um Motor a Ar Comprimido, dum simples balão, que vicês imprimen em 3D!

Impecável:

Single Cylinder Air Engine

gzumwalt 

Before starting with this Instructable, I would like to express my sincere thanks to Instructables for featuring Single Cylinder Air Engine. I am indeed honored and humbled, again, many thanks.

Single Cylinder Air Engine runs on compressed air, a vacuum cleaner, a balloon, or even lung power. I've included three adapters in the design to interface with each. Please note the friction test video; your engine needs to pass this test before being successfully operated on balloon power.

The design incorporates two ports, one upper and one lower. When Single Cylinder Air Engine is viewed from the port side, "Wheel Piston.stl" rotates clockwise when pressure is applied to the upper port, and counter clockwise when a vacuum is applied to the upper port. As pressure or vacuum is applied to the upper port, the lower port functions as an exhaust (when pressure is applied) or an intake (when vacuum is applied). The opposite occurs when the lower port is used for pressure or vacuum. 

https://www.instructables.com/id/Single-Cylinder-Air-Engine/

Raspi Compute 3! E Colunas Bluetooth em Cabono? Mais Qr Code com o vosso Logo, converter 3D, e cortar com discos... De PAPEL!

A Família Raspberry Py conta agora com este Compute 3, duas vezes o RAM, e quase 10 vezes o desempenho de CPU do Module original!

COMPUTE MODULE 3 LAUNCH!James Adams 

Way back in April of 2014 we launched the original Compute Module (CM1), which was based around the BCM2835 processor of the original Raspberry Pi. CM1 was a great success and we’ve seen a lot of uptake from various markets, particularly in IoT and home and factory automation. Not to be outdone by its bigger Raspberry Pi brother, the Compute Module is also destined for space! 

Since releasing the original Compute Module, we’ve launched 2 further generations of much faster Raspberry Pi boards, so today we bring you the shiny new Compute Module 3 (CM3); this is based on the Raspberry Pi 3 hardware, providing twice the RAM and roughly 10x the CPU performance of the original Module. We’ve been talking about the Compute Module 3 since the launch of the Raspberry Pi 3, and we’re already excited to see NEC displays, an early adopter, launching their CM3-enabled display solution.

https://www.raspberrypi.org/blog/compute-module-3-launch/

Para se familiarizarem com o fabrico em Fibra de Carbono, nada melhor do que este Projecto que vos oferece esta coluna de som Bluetooth:

Carbon Bluetooth Speaker BuildSteve Willson Kujur 

Hey! everyone My name is Steve .

Today I'm going to show you How to make a Carbon Bluetooth Speaker Build as written on the tittle .

It is very interesting subject to work with I've spend many times in research and experiment finally i came with a New Project .

Since , Bluetooth Speaker are very Popular Today

I've been searching a Best Bluetooth Speaker for long year and years .

Finally i made it

Let's Get Started 

http://www.instructables.com/id/Carbon-Bluetooth-Speaker-Build/

Para terem a vossa página acessível nos vossos Cartões de Visita e Folhetos, têem esta Página impecável, e Grátis, em que podem até lá pôr o vosso Logo...
Como o Qr Code com o Link desta Página!

The free QR-Code-Generator to create QR Codes with Logo, Color and vector formats (SVG, PDF, EPS).

All generated qr codes are free for commercial usage. If you like our service we would be very thankful about recommendations and links to us. Thanks! 

• QRCode-Monkey...
• is a feature-rich QR-Code Generator
• is free for commercial usage - do whatever you want with the generated QR-Codes
• offers unlimited scans for every QR-Code
• generates high resolution quality QR-Codes for print in PNG file format (up to 3000px width)
• generates SVG, PDF or EPS vector graphics (currently without logo and effects)
• changes the color of an QR-Code
• includes logos from a predefined gallery in your QR-Code
• includes logo from an image URL
• includes own logo-images via file upload
• generates QR-Codes for URLs, Text, SMS, Phone, vCard (Business Cards), MeCard, Facebook, Youtube, Google Maps Locations and more
• prints generated QR-Codes directly on all kind of products (using zazzle.com)
• does not save your entered data - generated QR-Code images will be deleted after one day

https://www.qrcode-monkey.com/

  

É um Programa pequeno mas poderoso, que aqui aparece, e visualiza e converte-vos uma data de Objectos 3D, o que vos poupa tempo e chatices sem fim...

JNetCAD ...

... the Java-Application for viewing and converting CAD data. 

JNetCAD is a simple Java GUI for importing and exporting several CAD formats. Each im- and export module exists as JAR library and can be used separately in other projects. JNetCAD uses jRealiy for the visualization. Hence it provides a software renderer and a JOGL (Java binding for OpenGL) renderer. For the import libraries, exemplary Java3D and jReality renderer are included. At least Java version 1.5 is required. 

http://www.johannes-raida.de/jnetcad.htm

...Deixo-vos este Vídeo, que é um achado, de como podem cortar Plástico, Madeira, e outros materiais, com o vulgar Papel A4!

Bom em emergências, como quando se parte o último disco de serra Dremmel, ou para Materiais muito sensíveis ao corte...

Fantástico.

Cutting with an Angle Grinder and Paper (Plasterboard, plastic, wood)
johnnyq90 

https://www.youtube.com/watch?v=GiOrCSWymS0