Desinfectante UV! E mais do Thang, uma Impressora 3D por deposição de pó, e experiências com Super-Cola

Desinfectar as vossas gigajogas não-porosas, com este Aparelho de Ultra-Violetas, em minutos?

É bom.

Construam-no em casa:

DIY Ultraviolet Sterilization Device (UVClean)henrydmayne 

Introduction
Hi all and welcome to my very first instructable! In this step by step guide, you will learn how to create your very own ultraviolet sterilization device that can be used as either a wand, or as an automatic sterilization chamber. The device, called the UVClean, uses a special UVC bulb that can sterilize nonporous surfaces in a matter of minutes. 

https://www.instructables.com/id/DIY-Ultraviolet-Sterilization-Device-UVClean/

O Thang continua a dar-nos deias, esta para evitar catástrofes, nas vossas Engenhocas, pára o cursor, no princípio e no fim do percurso:

Safety clutch for screw drives

thang010146 

 Input: violet screw.

If the pink key is in the rectangular hole of the grey nut, it prevents the grey nut from rotation, thus the nut translates when the violet screw rotates.

When the nut block (in yellow) reaches its end position, the blue bar of V-shaped slot is pushed from its neutral position. The V-shaped slot and the red pin make the pink key leave the rectangular hole of the grey nut, thus the nut rotates together with the screw and stops pushing the nut block.

Once the screw reverses, the pink key gets into the rectangular hole of the grey nut under the action of the green spring, prevents the grey nut from rotation, thus the nut translates back 

https://www.youtube.com/watch?v=R9vVNTHpjII

Não há só FDM, também há 3D por deposição de pó, e aqui vai como fazerem a vossa própria Impressora 3D usando esta tecnologia, que não precisa de suportes:

Plan B overview, Open source 3DP printer

ytec3d

Plan B is an open source 3DP printer. It prints in powder with a special binder. 3DP printing requires no support material and prints at higher resolution than FDM printing. Printing in powder has the potential to be cheaper than most techniques, though more research into materials is needed.. 

https://www.youtube.com/watch?v=HIAddQmqlgE&lc=Ugjj0mlXZHY5h3gCoAEC.7-H0Z7-Trk-97y3oHF6r1J&feature=em-comments

A Super-cola, misturada com Maizena, faz-se num Plástico super-duro. Óptima para reparar de tudo um pouco, mas há outros Materiais a experimentar, com a Super-cola.

Super Glue And CINNAMON Has An UNEXPECTED ReactionThe King of Random 

Today we're mixing super glue, aka cyanoacrylate, with a few different substances, such as graphite, cinnamon, and baking soda. We'll also see how well you can cast coins with it. What kind of reactions will we get? 

https://www.youtube.com/watch?v=7XYPnHODt1E

Reciclar a vácuo, um Manual de Soldagem num Blogue fantástico, um Buldozer para a criançada, uma Lanterna completa, e um Sistema de Som!

Aproveitem todo aquele plástico rijo das embalagens, reciclando-o com esta máquina de Molde a vácuo:

Milk Jug Vacuum Forming - Recycled HPDE PlasticHey Jude 

This Instructables shows you how to reclaim / re-use / re-cycle HDPE plastic, from waste milk jugs - and use them for Vacuum Forming. It saves using virgin plastic, (say for prototyping), is food safe, is flexible once moulded (good for concrete mini moulds), and does not give off harmful fumes upon careful heating (Easter Eggs Treasure!).
(Please consider voting in Trash to Treasure contest, if you liked it! Thanks.)
You may have access to an industrial grade Vacuum Former in your workshop or maker space, but if you are using a hobby Vac Former, like a Mayku*, you do need to avoid draughts to keep the plastic extra warm. I made a heat shroud here (LINK to Instructable) to Fix It...so do take inspiration from it if it helps with thicker HPDE containers, etc. (though at your own risk). 

https://www.instructables.com/id/Milk-Jug-Vacuum-Forming-Recycled-HPDE-Plastic/

Neste Blog há muito para explorar, Sofware, Mecânica, Manuais, e este manual é um deles:

Welding processes handbook

Klas Weman

Mecha Source 

Production of this guide to welding was prompted originally by a wish for an up-to-date reference on applications in the field. The content has been chosen so that it can be used as a textbook for European welding courses in accordance with guidelines from the European Welding Federation. Over the last few years, an equivalent Swedish guide has been used for courses on welding processes and equipment. The author hopes that this guide will serve as a useful reference book for those involved in welding. In writing the book, there has been a conscious effort to ensure that both text and illustrative material is clear, concentrating particularly on interesting and important aspects. 

https://mechasource.blogspot.com/2018/06/welding-processes-handbook-klas-weman.html

Eis um exemplo de criatividade, para a Criançada, um soprador de neve que virou um Bulldozer!

Snowblower Converted To Mini Tracked BulldozerFarm Show 

“My 4-year-old son Matthew loves to drive it. I’m really happy with how it turned out,” says Randy Brancheau, Lachine, Mich., who converted a tracked walk-behind snowblower into a kid-size, ride-on bulldozer.
  The mini tracked bulldozer is equipped with a 27-in. blade and the seat off a riding mower. It’s painted Deere green and yellow.
  Brancheau built it last winter and says his son has already had a lot of fun operating it. “I hear from Matthew every day how much he likes to plow snow with it, and I made a video of him at work. He raises or lowers the blade by pulling on a lever and steers by maneuvering a pair of levers. It has 4 forward gears and one reverse. I didn’t modify the snowblower’s original friction disc drive system at all.”
  Brancheau says he got the idea a long time ago but was only recently able to make it happen. 

https://www.farmshow.com/a_article.php?aid=33214

How I Made the Most Advanced Flashlight Ever

Julie

PCB design is my weak spot. I often get a simple idea and decide to realize it as complex and perfect as possible.

So I once looked an old "military" 4.5V flashlight with regular bulb that was collecting dust a. The light output from that bulb was pretty miserable and the batteries were non rechargeable, battery life was non existent. But its case was nice.

So I decided to give it a new high-tech heart.

So I asked myself: "How many functionalities do I want to build in?"

and I said: "Yes. All of them."

:)

https://www.instructables.com/id/How-I-Made-the-Most-Advanced-Flashlight-Ever/

...E por  hoje é tudo, mas não sem antes divulgar este Instructable para os Audiófilos, um Sistema de Som: 

DIY 5.1 Surround speakers - a learning opportunity!

Thomas Sanladerer

3D printing parts that are more complex than what we usually make can be daunting - especially when it also needs look good! Making my own 5.1 surround satellite speakers was a project I started over two years ago and today we're finally finishing it. There were plenty of hiccups and mistakes - I'll show you all of them so that you don't have to make them yourself!

The speakers were modeled with Onshape, unfortunately I don't have the models anymore or I'd gladly share them with you.

https://www.youtube.com/watch?v=stFMvPXvraY&feature=em-uploademail

Câmara FPV! E uma máquina 2 em 1, Perspectiva Cavaleira, avião 3D, e o vosso instrumento musical

Cá temos este Vídeo, onde podem aprender como fazer uma Câmera de FPV, ou vista de primeira pessoa, ou seja, é como se estivessem lá!

Lá, no Telecontrolado, ou onde quizerem.

How To FPV Camera System For RC Models. With Run Cam II camera and EV800D Goggles

KendinYap

FPV (First Person View) system installation. Real-time wireless imaging system installation for RC airplanes. Run Cam 2 FPV camera and record camera. Eachine EV800D FPV Googles. FPV Transmitter

https://www.youtube.com/watch?v=-DtjyOO6eaQ&feature=push-u-sub&attr_tag=urPGBewMN4o2Ktrx%3A6

O nosso amigo Gökmen é alguém a seguir, esta máquina 2 em 1 reflete tanto a sua Carpintaria sem complicações, mas eficiente...
Como o seu genial uso dum tico-tico para motor dum sem-fim de máquinas!

Genial

Scroll Saw & Jigsaw Table (2 in 1) Kıl Testere Makinası  Dekupaj TezgahıGökmen ALTUNTAŞ

 2 in 1.. Scroll Saw and Jigsaw Table in the one machine. it's very easy to transition each other and it's works perfect. You can find all the measurements at the end of the video.
İkisi bir arada.. Kıl Testere Makinası ve Dekupaj Tezgahı.. İkisi arasında geçiş yapmak çok kolay ve çok pratik.

https://www.youtube.com/watch?v=vremHB49YCg

Isto é muito importante!
Se souberem desenhar em 3D, a partir de vistas que qualquer um faz, podem explicar com uma imagem o que nem mil pavavras o fariam!

Important stuff!
Isometric Perspective allow you to illustrate on 3D your ideas, from top, front, and side views anyona can make...

Aula 08 - Perspectiva Isométrica 

Rodrigo Araújo Fortes 

Exemplo de Perspectiva Isométrica
https://www.youtube.com/watch?v=Nna2BOYNjPc

E que tal o vosso próprio avião tele-comandado?

Impresso em 3D!

Vejam os passos que este nosso amigo tomou, para isso:

Designing a 3D Printable R/C Aircraft (Thin Walled, Lightweight Printing)

sahevaantaneja 

About two years or so ago, videos about 3D printed R/C aircrafts popped up on my suggested YouTube feed and since then I've wanted to build one of my own. I managed to find plans online and was intrigued by the immense amount of detail given to the internal structure, unfortunately, I did not have access to a paid slicer software capable of slicing such complex internal structures and the free slicer I was using was capable of slicing only the external skin/structure.
I figured that I might as well print the aircraft files I found online with conventional infills (hex, triangle, line, 3D gyroids etc.), a feature available with almost any slicer software out there. My printed aircraft turned out to be twice the anticipated weight and had a terribly high wing loading which made it fast as rocket. 

https://www.instructables.com/id/Designing-a-3D-Printable-RC-Aircraft-Thin-Walled-L/

E com este Instuctable, fazem um instrumento musical,  com uma gama de sons infinita, por obra do controlador MIDI, que faz dele um sintecizador, e depois um instrumento:

The Synthfonio - a Musical Instrument for EveryoneFrancoMolina
What this is 

This is an easy to learn instrument, simple to operate, improvisation oriented and with an endless possibility of sounds (as a MIDI controller). It features 2 sets of keys, one to define chords and key signatures, and another one to actually play the notes. Whatever chord is pressed in the instruments neck keys will define the pitch of the keys on the instrument handle, similar to a guitar, violin, and other string instruments; with the added advance that this one is a smart device that can interpret the scale being played from a single notes or pair of notes.

https://www.instructables.com/id/The-Synthfonio-a-Musical-Instrument-for-Everyone/

Faça o seu Retro-Projector! Multi-Máquina, fornalha do micro-ondas(?), Dremel CNC, e um Scanner 3D

Isto faz-me um Engenhocas feliz...

Podem fazer isto com alguns plásticos de embealagem, e acho que vou fazer isso mesmo!

5 Minute Cheap and Easy Rear Projection Screen 

melarky

Looking for a new way to decorate for the holidays? This projection screen is great for Halloween, Christmas, New Years, 4th of July, just about any holiday you want to make cooler!
We use this projection screen in our front window at home as well as at my husbands work (makes for a great eye catcher right on main street).
With 5 minutes and a few dollars worth of supplies, this is a great project that really makes holidays and special occasions fun. We are entering this into the halloween contest, please vote for us! 

https://www.instructables.com/id/5-minute-cheap-and-easy-rear-projection-screen/

Multi-Máquinas!

Vão figurar SEMPRE, aqui.

Por isso, cá vai mais uma:

$150, 12″ Swing, Metal Lathe, Mill, and DrillPat Delany

The Lucien Yeomans “secret” that was almost lost.
Your developing world school needs almost-free machine tools?
Your developing world factory needs unavailable spare parts?
You need a complex part that is too expensive to have made?
Need to bootstrap a factory but only have a few bucks?
No problem!
You just need a metal lathe. Metalworking lathes are necessary to the production of almost everything but are very expensive. In 1915, special lathes made from concrete were developed to quickly and cheaply produce millions of cannon shells needed for World War I. Lucien Yeomans, the inventor, won the nation’s highest engineering award for it but sadly the technique was almost forgotten after the war. We re-discovered it as a way to quickly make inexpensive but accurate machine tools for use in developing countries and in trade schools and shops everywhere. We made modern construction practical by replacing the original poured, non shrinking metal with cement grout.

https://makezine.com/projects/the-multimachine-150-12-swing-metal-lathemilldrill/

Aqui, podem aprender com fazerem a vossa própria Fornalha...
De Micro-Ondas?

DIY Microwave Kiln | Fuse Glass in Your MicrowaveShakeTheFuture 

In this Instructable, we'll look into way to make a microwave kiln.
For those who don't know what is a microwave kiln, here is a quick introduction.
Microwave kiln is a kiln that you can put in your regular microwave oven.
It does not use a wire heating element or gas to heat up. Microwave kiln is covered with silicon carbide.
Silicon carbide absorbs microwaves and turns them into heat.
Microwave kilns are usually used to fuse glass.
You can turn broken glass into amazing jewelry. 

https://www.instructables.com/id/DIY-Microwave-Kiln-Fuse-Glass-in-Your-Microwave/

Eis outro Engenhocas feliz, pudera, já fez a sua Frasa CNC, dum Dremel!

DIY 3D Printed Dremel CNCNikus
When I got my first 3D printer I was extremely happy with all the new possibilities to create things but after some time I noticed the limitations of 3D printing. Plastic is easy to melt, sometimes it's not mechanically resistant enough and most importantly sometimes doesn't look good. Don't take me wrong here, I love 3D printing and I like plastic (except plastic waste) but there are things that look, work or feel way better when made out of nonplastic material. Imagine all your furniture made out of plastic. Sometimes I prefer wood, when I need strength, metal (mostly aluminum) is a way to go. That's where CNC milling machines are used. Usually, the cost of such machine is really high, most of the hobbyist, small makers can't afford such expensive equipment. That's why the idea of building my own CNC machine sparked in my head
https://www.instructables.com/id/DIY-3D-Printed-Dremel-CNC/

E para terminar, um Scannner que fazem com pouco, mas faz o serviço!

DIY Budget 3D Scanner V3

tobychui

Hey guys, it has been a while I didn't publish any instructables. This time, I brought to you guys one of the project I made back in Feb 2019. The version 3 Budget 3D Scanner!

https://www.instructables.com/id/DIY-Budget-3D-Scanner-V3/

Um Génio! E uma Máquina de Molas, Tele-controle Arduino, crescam a Impressora 3D, e uma Micro-Fresa

Não há muitos Divulgadores  e ao mesmo tempo, autênticos Professores como este...
Um Génio!

Na sua Série de Vídeos, aprende O QUE PRECISAM, para cada caso, mas vão absorvendo uma data de material que doutra maneira seria maçuda e sonorípora...

Acreditem, o ar descontraído esconde um menino que aprendeu Engenharia para Operador de CAD, 3 gigantes livronhos, como se não fosse nada, porque era preciso saber muita Matemática, e ele já a sabia, à vontade!!!

Como se não fosse nada!

.

Engineering Principles for Makers Part One; The Problem. #066Jeremy Fielding 

A easy to follow strategy for designing and making stuff with a focus on machines. Turn your idea into a real "thing". I call part one my “Dr. Farm“ Method.
My version of the basic design engineering process. 

https://www.youtube.com/watch?v=FHhXbz1K0k0

Ora cá vai esta muito satisfatória máquina de criar Molas e outras coisas, a começar pelo altaente satisfatório Vídeo, algo que faz mesmo falta ao Engenhocas, e uma data de vezes...

Spring Making / Wire Bending Machine 

jiripraus

Well, this machine is not only about making springs. It is a wire bending machine capable of bending 0.8/0.9/1 mm wire into any 2D shape. But yeah, the coolest thing I was able to make with it so far was the spring. How cool is that?
The main goal was to make it quite precise. Other DIY wire bending machines are not very precise and their bends tend to have quite a big radius. I like to work with nice sharp bends!
The second goal was to make it as easy to build as possible with commonly available parts and components. All the structural parts are 3D printed and all the metal parts are available in most of the hardware stores. 

https://www.instructables.com/id/Spring-Making-Wire-Bending-Machine/

Um Tele-Controle feito por vocês, usando nem menos do que um Arduino...

DIY Arduino Radio Controller || Remote Controller || Part 1Aatik's lab
You might have played with a lot of rc cars and probably want to make one by yourself but one problem you will face is from where to get the desired transmitter and receiver so in this video i will show you how to make a arduino based transmitter and receiver with the help of nrf24 radio

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

Como fazer uma Impressora 3D "crescer"(!) isto é, fazer duma pequena uma grande Impressora!!!

 

How to Create a Large 3D Printer Using a Smaller 3D Printer - "Project Locus"redhatman  

From those that own 3D printers, to those who simply are just curious about their capabilities, one topic that comes up rather frequently is the idea of "Printing another 3D Printer". Now this may not be 100% possible when considering components such as the electronics, however, nearly every 3D printer today in the open source community utilizes to some degree, 3D printed parts in it's construction. From fan mounts to spool holders, a person can spend a few minutes searching the web, and likely find a suitable design to use on their own printer. This has proved to be very useful, especially for those who love to build, modify, and design their own machines. 

https://www.instructables.com/id/How-to-Create-a-Large-3D-Printer-using-a-Smaller-3/

Que tal uma Micro-Fresa para a Oficina, para metais mais macios como Alumínio e Bronze?
Faz jeito:

Benchtop Micro Milling MachineHonus  

This is a micro sized benchtop mill that is suitable for milling small parts in soft metals such as Aluminum and Brass. While it is a manual mill it wouldn't be too difficult to convert it to CNC by adding suitable stepper motors and a CNC controller. 

The travel specs are:
X axis- 150 mm
Y axis- 75 mm
Z axis- 150 mm 

This design uses off the shelf assembled linear slides and 80/20 Aluminum extrusion for simple assembly and accurate alignment. The beauty of this design is its modular nature- you can make it any size you want and it's super easy to build.
Be sure to check out the build notes on all of the enlarged images! 

https://www.instructables.com/id/Benchtop-Micro-Milling-Machine/

A Slide Rule! A melhor impressão em PETG, Imprimir em 3D, MESMO(!), uma 3 em 1 para a serra, e uma Peça para a carpintaria, impressa 3D!

Se precisam deste Instrumento de Cálculo, a Régua de cálculo pessoal, versão Circular já o podem fazer, com um humilde CD!

É bom!

CIRCULAR CD SLIDE RULE

cparedes2302  

Hello Everyone!

Keeping it up with my math helping tools and after I finished my straight Cardboard Slide Rule, I decided to make another slide rule but of much easier and fast construction. I decided to go for a simple circular slide rule. Just as the previous slide rule, the intention is to have middle school students built their own and use it to get numeric ability. I know there are several apps that emulate a straight and a circular slide rule, but if you are using your phone it would be much easier to use the calculator instead of the slide rule. My dream is to have the students “thinking and reasoning” again instead of relying so strongly on technology.

The advantages of a circular slide rule is that the computing scales (C and D) of a 9.5 cm (3 3/4”) diameter tool are equivalent to a 30 cm (almost 12”) straight slide rule! So you can get a more accurate reading! The disadvantage is that as your scale is located closer to the center of the Slide Rule, the scale becomes very short and difficult to read. 

https://www.instructables.com/id/CIRCULAR-CD-SLIDE-RULE/

O Petg, enquanto Filamento, está a ser muito mais utilizado, por isso, vai como o imprimir o melhor possível:

PETG Print Settings – How to Find the Best Settings for PETGMiroslav Sarcevic  

PETG is short for polyethylene terephthalate glycol-modified. That could mean something to you if you’re into chemistry, but for the rest of us, it’s simply the most used type of plastic on the planet (in the form of PET). You can find it in plastic bottles, food containers, packaging, toys, kitchen utensils, and more common plastic products. In addition, this recyclable plastic can be injection molded, blow-molded, thermoformed, bent, cut, and in recent years, 3D printed.
We won’t go into the details of PETG chemistry in this article but will instead concentrate on 3D printing with it. Before we dive into printing tips, here are a few of the material’s characteristics:

• Glass transition temperature:  80 °C

• Density: 1.27 g/cm3 (which is higher than PLA and ABS)

• Resistant against most chemicals (such as acids, alkali, and solvents)

https://all3dp.com/2/petg-print-settings-how-to-find-the-best-settings-for-petg

Ao contrário das Fresas 3D, as Impressoras não imprimem em 3D MESMO, porque o Extrudor só move uma camada de cada vez, toda ela, sem a possibilidade de estrudar, e descer, e subir, num acompanhamento duma superfície curvada.

Mas está-se já a começar a fazer REAL Impressora, já, já!

Fantástico!

Achieve true 3D printing with non planar slicing

Teaching Tech

This is the most interesting thing I’ve done with my 3D printer in some time. Instead of printing in a series of 2D planes stacked up to form a 3D shape (2.5D), this non planar technique creates geometry with true 3D tool paths that can eliminate the steps often seen on shallow surfaces. Based on the amazing Masters Thesis of Daniel Ahlers and the University of Hamburg, this development can be tried yourself if you are willing to put in some time to setting it up.

In this video I’ll lead you through step by step on how to setup a virtual Linux machine on your PC, compile the custom version of Slic3r and then share with you my results. The future is bright and I thank people like Daniel Ahlers  and Moritz Walter for leading the way.

E cá vai esta 3 em 1 para a Serra Circular, que vos vai ampliar a Ferramenta, com estes 3 Cortes adicionais, tão úteis, vejam o vídeo!

How to Make a Three in One Table Saw Sled || Taper Cuts- Jointer Sled - Miter Cuts
penaltyboxwoodshop

This video shows you step by step on how to build a three in one table saw sled. With this sled you can make taper cuts for table legs, edge joint wide boards, and make 45 degree cuts for projects like making picture frames. This sled can be helpful to any skill level woodworker!

https://www.instructables.com/id/Three-in-One-Table-Saw-Sled-Taper-Cuts-Jointer-Sle/

Mais Carpintaria, agora, uma coisa feita nas Impressoras 3D, está tudo inter-ligado, no mundo da Engenhocas...

Não quero que vos falte nada!

CNC Clamps 2mm (0.08 Inch) to 18mm (0.7 Inch)PatrickH101 

Clamps for holding down your workpiece on a cnc router. The
clamps are designed for holding down materials with a thickness of 2mm to 18 mm.
I designed the clamp using Fusion 360.
There are 4 different sizes for the bolt that goes through, M5, M6 or 1/4 inch and for a special request M8 (The M8 version is not tested but should work though the sliding distance is a lot shorter).
Best is to use a washer on top.
The actual foot to hold your workpiece can rotate to adjust to the thickness of your material. 

https://www.instructables.com/id/CNC-Clamps-2mm-to-18mm/