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.
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.
...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:
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.
A Impressão 3D foi criada para Moldes, de Injecção de Plástico...
Por isso, agora, podem fazer MESMO algum Dinheiro, se usarem as Impressões para isso mesmo.
E reciclado, é ainda mais lucrativo!
É bom!
Hello 🖐 We are Precious Plastic.
Precious Plastic is a global community of hundreds of people working towards a solution to plastic pollution. Knowledge, tools and techniques are shared online, for free. So everyone can start (yes, you too!).
We are independent, poor but free :)
Hundreds of people all over the world contribute to the project with their skills & knowledge, single or monthly donations.
Precious Plastic was started in 2013 by Dave Hakkens and is now at its third iteration (version) counting on dozens of people working on the project, remotely or on site (somewhere below sea level in the Netherlands).
Join the fight against plastic pollution.
Continuando na onda da Reciclagem, podem pegar nas vossas Impressoras 3D, e fazer, não só estampagem de Couro, com já referi, mas também...
Metal!
Chapa fina de Metal, claro, ou seja, Latas de refrigerante, recicladas.
Impecável.
Embossed Metal Artwork From a Pop Can
paigenoelle
While pop cans have a deposit in my state, other canned non-carbonated drinks like lemonade do not. The recycling center is a bit out of the way from me, so I wanted to give reusing these cans a try first. There’s a lot of flexibility in materials and methods in this project, so I’ve tried to highlight substitutions as best as possible.
Note: this project involves sharp edges and cutting tools. If you are looking for a project suitable for children, consider using aluminum foil as discussed in “Substitute Materials.”
Não só podem construír uma Impressora 3D, a partir de Sucata Electrónica, como, ainda por cima, aquela que vocês puderem arranjar!
À medida das vossas possibilidades!
A partir dum programa que descarregam, Retr3d, e do FreeCad, ambos grátis, é calculada uma Impressora que vai usar o que apanharam, para poderem ter 3D por quase nada...
Impecável.
Retr3D Building 3D Printers from e-waste
How Does it Work?
NOTE: The Retr3D printer has been redesigned and now is as shown above. Designs for V2.1 can be found here. For build instructions see the file named "Build Documentation Master.pdf" in the Documentation folder. If you need help preparing V2.1 STL files for your printer please send an enquiry to enquiries@techfortrade.org.
Retr3d is a framework dedicated to affordable 3D printing equipment for developing economies that can be locally sourced, locally maintained and locally improved.
We believe that 3D printing can be as transformative in developing countries as the mobile phone. As with the mobile phone, which has already changed the way people across the Africa communicate, introducing 3D printing at the community level offers the potential to localize manufacturing. Which is why we are making it possible to build Retr3d machines from the thousands of tonnes of e-waste which would otherwise end up as landfill.
Retr3d creates 3D printer designs based on the materials that you have access to. Retr3d can create printers form mismatch parts gathered from e-waste. All you need to do input the important the important dimensions of what you are using and Retr3d will handle all of the design changes required to make a functional printer. The designs are created using a series of Python scripts that are run in FreeCAD. When the design is finished, a folder is created with all of the design files and STL files needed to build the printer. With Plater and Slic3r integration, Retr3d can even arrange and slice the STL files for you.
Getting Started
Read the safety documentation.
Download and install Retr3d and FreeCAD.
Download and read the note: "E-Waste Components" from the files tab.
Download the "Retr3D BOM" from the files tab and gather your materials.
Follow the "Retr3D instructions" from the files tab to design and build your printer.
E é também à medida, que podem fazer Máquinas-Ferramenta, como esta, que soa mais próxima das Indústrias Portuguesas.
Para que nâo tenham a ideia de que a Vention é só para Impressoras 3D, vejam aqui uma Cortadora de Tecido, idealizada na Net, por quem precisou dela, e pronta a ser-lhe mandada, às peças.
Um trunfo para Empresas e Indústrias Nascentes...
Fabric Cutting Machine
Stephen Galle
DESCRIPTION:
Machine to cut fabric at different lengths, max. 3m. A pneumatic gripper on gantries, driven by 2X timing belt actuators, grasps the fabric on one end of the table. It pulls the fabric all the way to the other end, in sync with feeding rollers. When the required length is reached, clamps hold the fabric in place and another timing belt actuator allows for a circular blade to cut.
O que se imagina, e o que acaba por saír da Impressora 3D, raramente coincidem, à primeira, por isso, para evitar dores-de-cabeça, eis este belo Artigo, da Sculpteo, sobre como orientar as vossas peças, de forma a terem os melhores resultados:
How does part orientation affect your 3D printed parts?
Katarzyna Plewa
In all the traditional manufacturing
processes, orientation is a parameter which has an impact on the
feasibility of the part. A bad orientation choice will make the part
complicated to produce, and will raise the cost of the final part. With
machining, you try to minimize machining time, and thus, to minimize the
number of operations and positions. With casting, you try to find the
most simple mold. In all cases, the technology and the orientation of
manufacturing are parameters that need to be taken into account as soon
as part conception begins.
Some additive manufacturing processes
are not impacted by orientation when it comes to the feasibility of the
part, that’s mainly the case for powder-based technologies such as SLS or HP Multijet Fusion. With these technologies, part orientation mainly has an impact on the quality of the final part.
Quando quizerem fazer uma Impressora mesmo grande, não se fiquem pelos 12 Volts das pequenas, vão até aos 24 Volts, e uma placa aquecida, a funcionar a 110 V!
E está aqui abaixo, como o fazer.
Upgrading 3D Printer From 12 to 24 Volt Core3D
My CoreXY is a beast. It has 4 2A stepper motors, 4 TMC2130 stepper drivers, 110 Volt heated bed, enclosed case and for almost 3 years now has been running on a 12 Volt knock off RAMPS 1.4. It's like a corvette running on a corolla engine.
There is anecdotal information about things heating up faster (which I'm not convinced of as you will change the heater cartridge) but most importantly, I've read that TMC2130 Stepper drivers operate better on 24 Volt and stepper motors have more torque when upping the voltage.
If anything, as you can see from the images above, upgrading to 24 volt certainly has made me revisit my wiring. That alone brings a feeling of immense satisfaction.
In this instructable I will discuss the 24 volt upgrade of my printer which is a CoreXY with 2 2A steppers, 2 1.7A steppers, Direct extrusion, parts cooling fan, controller cooling fan and LEDs.
In my upgrade I'm using a KFB2.0 controller board but there are many other alternative boards that can handle 24 Volt. The RAMPS 1.4 happens to be one that is not built to handle 24 Volt (there are upgrade options to that).
Many of the items will be similar in your printer and might be handled the same.
Se se imprimir sobre uma correia podem-se produzir Impressões teóricamente sem-fim!
Ou até acabar o Filamento...
Mas, a sério, esta é uma Inovação importante, porque com isto, até pranchas de Surf se podem imprimir, de uma levada.
Brutal:
New conveyor belt 3D printers Polar3D Flash and Printrbot Printrbelt
Michael Petch
3D printing with conveyor belts has seen a flurry of activity this year. Now, Bill Steele of Polar3D has posted several interesting videos featuring new 3D printers.
The Polar3D Flash FDM printer uses a conveyor tilted at an angle to produce a continuous stream of parts. In the video the print head moves in the X and Y axis, as in any cartesian FDM machine, however the Z axis is a conveyor belt – angled at 45°.
Another video posted this week shows a 3D printer Steele calls the Printrbot Printrbelt. This machine is the result of a partnership between Polar 3D and Printrbot.
Brook
Drumm from Printrbot demonstrated the Printrbelt ahead of sending it
down to the machines first public demonstration at the International
Society for Technology in Education (ISTE) event in Texas earlier this
week.
The Printrbelt’s printhead moves on an X axis angled at 35°
to the Z axis composed of a heated print bed conveyor belt. Drumm got
in touch to tell use, “It’s out of beta and for sale for early adopters
who want to get on that bleeding edge.”
The Printrbelt also features automatic part ejection.
