Torcer a 90º! E uma data de engrenagens, Radio WiFi, e um pantógrafo para fresa

Algo para espantar os amigos e família, uma engranagem a 90º, mas sem dentes! 

sim, há maneiras de criar engrenagens sem rodas dentadas...

Twisty Toy

 rschoenm

I designed this simple twisty toy based on an epicyclic bar angular transmission. It's a cool little fidget toy that looks like it shouldn't turn. Works well as a stress reliever!

You can make this toy with either a wood lathe, or a 3d printer, or a laser cutter.

Supplies:

Hardwood like maple and cherry

1/8" brass rod

3/8" dowel

CA glue, wood glue

https://www.instructables.com/Twisty-Toy/

Ora aqui está um curioso projecto para ouvir Rádio do WiFi, para a vossa criançada, que ainda não têem idade para acessar o Spotify:

RFID Internet Radio
tars.vanhoof 

Hello fellow makers,

This Instructable describes how I made an RFID internet radio for my kids. They like to listen to music but since they're too young to start Spotify and cast to the TV themselves, I decided to make an easy and hopefully fun interface for them. This was a Covid-19 project so I took my time.

The player is built with a Raspberry Pi, a HiFi module and an RFID module. The tags are put in a base on which wooden puppets are glued which are easily identifiable for the kids as containing a certain playlist. I also designed and built a nice enclosure because it will be visible in our living room and therefore it has to look good.

I made a lot of personal choices during the development but because it's built around a Raspberry pi it's very customizable. I'll try to describe my progress and all the problems I encountered as detailed as possible.

I've already got a few upgrades in mind such as removing the (need for) buttons to make it even simpler, I'd like even better full-range speakers, playlist programming via a smartphone, maybe in the long run easier set-up of WiFi and Spotify for non-Raspberry-savvy family members...

I'd love to see what others make of it! Can you guess which song the puppet on top is for?

https://www.instructables.com/RFID-Internet-Radio/

Uma enorme quantidade de engrenagens e rodas dentadas!

É preciso dizer mais?

Gears 

Fred Peyerl

https://www.pinterest.pt/fredpeyerl/gears/

E para terminar, um Pantógrafo para Fresa 3D

The Pantograph Welder 

MegaLoceros 3D

https://www.pinterest.pt/pin/806003664562273251/

Bola de Natal. E cópias sem fim (!), Estlcam, para toda a CNC, às curvas com a Fresa, Thangs com tudo, Moldes com pistolas de cola, e Ovos!

Podem imprimir esta simpática bola de Natal, com o Presépio, para pendurar na Àrvore de Natal, obra deste vosso amigo, juntamente com muitos outros:

https://cults3d.com/en/users/edgarinventor/creations

Para replicarem objectos sem fim, têem esta fenomenal técnica, e depois de criarem o DMolde, podem até usar a placa da Impressora 3G, só ela, não o extrusor, claro, para aquecer as placas de plástico para termo-formação:

NOW YOU CAN DELIVER DOZENS OF DUPLICATES WITH INEXPENSIVE 3D-PRINTED MOLDS FOR THERMOFORMING

Ira Somers

3D Printing Molds For Thermoforming Short Runs: Quick, Easy, and Inexpensive

 

Businesses call owners of Massivit 3D printing solutions to bring their most creative ideas to life. Now they can call when they need multiple copies of displays, signs, or props.

Massivit 3D makes short run molds for thermoforming possible—and even profitable.

Thermoforming is a cost-effective process when you need multiple copies of the same product. Take a mold, place a thermoplastic sheet on top, add heat and a vacuum and voilà! The sheet takes the form of the mold. Lather, rinse, repeat until enough copies are created.

https://massivit3d.com/blog/now-you-can-deliver-dozens-of-duplicates-with-inexpensive-3d-printed-molds-for-thermoforming/

Ponham as vossas criações, 2D ou 3D, neste programa, Esticam, e ele deita cá para fora o G-code nessessário para os 2 casos...

É bom!

CAM Lite

ALL3DP

Estlcam is a computer-aided manufacturing (CAM)  program that allows users to turn 2D drawings and 3D models into machine-readable G-code. This brilliant project was created by Christian Knüll, and its popularity has skyrocketed since it debuted in 2014. Perhaps the most attractive characteristics of Estlcam are its simplicity and low price.

If you’re a beginner in CNC milling, you’ve probably been frustrated by the complexity (and ungodly prices) of many CAM programs. Estlcam solves these frustrations by presenting users with an extremely intuitive user interface at a price of around $60.

The program sticks to the basics. Simply import a 3D file (such as an STL) or a 2D file (such as .dxf, .svg, .png, .gif, or .jpg), generate toolpaths, export the G-code – which is referred to as a “CNC program” in Estlcam – and start cutting. In this article, we’ll guide you through Estlcam’s basic features and provide tips on settings along the way.

https://all3dp.com/2/estlcam-cnc-beginner/

Sigam de perto este Bacano de poucas palavras, mas MUITAS idéias, o Alex Laiho, porque para além desta maravilhosa Ferramenta DIY, tem um sem-fim de outras criações magníficas!

Uploaded by 

Alex Laiho

https://www.pinterest.pt/pin/AQdVQ0F7zlW9Gluu8PrReGLmts1qZpoCuSYWFYnBTq8ng9m8SOOWGvE/

Em Thangs, vocês encontram um sem-fim de Ficheiros 3D, podem carregar os vossos Objectos, colaborar com outros criadores, e encontrar o que querem, devido ao seu poderoso motor de busca, o que estão à espera? Vão lá!

Let's find Thangs. 

Thangs is the fastest growing 3d community with over 1,114,093 available models to search, store, and collaborate.

We created Thangs for one reason: our community members. With powerful search, collaboration tools, model sharing and unlimited storage, we are the fastest growing 3D community.

https://thangs.com/welcome

Ora aqui está uma bela ideia para a escola, para vender, ou para o que quizerem, fazer com a cola da pistola de cola toda a espécie de coisas, em série pequenas:

The Secret to a Perfect Hot Glue Mold

SophieBdoesart

I've been making molds for a while now, but I often found myself frustrated by the high costs of materials. I love the quality that silicone molds like Smooth-On give, but I wanted to find a cheaper alternative for small casts. Hot glue was the obvious choice for me because of its price, its flexibility, and its incredibly quick cure time. The one major problem with hot glue is that it sticks to almost everything. I needed to find a mold release that would fill any small pores in the positive, allow the object to de-mold easily, and be as inexpensive and readily available as hot glue to avoid defeating the purpose. I tried everything. Oil, petroleum jelly, even some Smooth-On mold release as a test but none of them worked well enough to not damage the molds when I removed the object. I didn't figure it out until we had a power outage and I was digging through my collection of scented candles. The liquidy, melted wax was perfect for coating objects. Hot glue doesn't stick to it but it goes on thin enough to not obscure the details of the mold. Here's how I finally got the perfect hot-glue mold:

https://www.instructables.com/The-Secret-to-a-Perfect-Hot-Glue-Mold/

Como aqui há de tudo para todos, cá vai este Projecto para a malta que nos alimenta, uma bela Incubadora para chocarem os ovos da vossa exploração Pecurária!

 

DIY Homemade Incubator

DIY Dave 

Branded and commercial incubators can be expensive for DIYers. A homemade incubator, on the other hand, can also hatch eggs successfully, and you don’t need to spend a lot of money on it.

https://diyprojects.com/homemade-incubator/

Fresa CNC de 5 eixos, Bio-Impressão 3D contra o covid(!), Scanning 3D LIDAR em Apps, Balestra de berlindes, e plantar àrvores a partir de galhos!

Uma muito boa ideia, com Instrucções.

Para fazerem uma Fresa CNC de 5 eixos!

É bom.

DIY Desktop 5-axis CNC Mill

i_nerantzis

OK, you bought your router and you are happy with it. If you are an artist. 

But... if you are an engineer... you probably are not so happy.

You cut some 2D stuff. Then try some 2.5D and start getting excited. And then, there comes a day when you start wondering... What if I can make something more out of my 3-axis router?

Then it comes to your mind that you can always convert one of the axis from linear to rotary! Yes this is it! You start doing it... you succeed, but deep down inside you know it.

You have to go all the way to the end and do it properly. You need to make the conversion to a full 5-axis machine to be satisfied! If you feel like it, then follow my lead...

https://www.instructables.com/id/DIY-Desktop-5-axis-CNC-Mill/

Não serve só para testar tratamentos para o covid, serve para sei lá que outros testes e tratamentos...

An Unexpected Bioprinting Advantage Over COVID-19

Kerry Stevenson

Researchers have been using bioprinting technology to assist in the development of COVID-19 treatments.

According to a report in the New York Times, researchers at the Wake Forest Institute for Regenerative Medicine unexpectedly discovered a new approach: 3D bioprinted miniature organs. These human-like replications mimic much of the actual body functions, and thus are ideal for use in testing.

The miniature organs, which apparently include lung and colon analogs, offer a trouble-free testing platform that doesn’t risk any human or animal well-being. In addition, these miniature organs are far more closely related, biologically, than mammals that have previously been used for testing.

There’s another advantage in that these bioprinted organ analogs can be continually monitored, unlike, say the lungs inside of a test subject, which are a bit hard to access. In this way those performing tests can directly observe the effects of their prototype treatments.

https://www.fabbaloo.com/blog/2020/8/4/an-unexpected-bioprinting-advantage-over-covid-19

A tecnologia LIDAR em Apps vai-os permitir scans com muito mais fidelidade:

First LIDAR 3D Scanning Apps Appearing

Kerry Stevenson

There’s now at least one new app that takes advantage of Apple’s new LIDAR capability.

A few months ago Apple unexpectedly announced a new iPad Pro model equipped with LIDAR. LIDAR is a range-sensing technology that is often used in high-end equipment for 3D scanning, particularly for landscapes. Seeing it appear in an affordable consumer tablet was quite a shock.

Apple’s intention was to provide additional sensor information to aid their Augmented Reality operations. In other words, when you’re pasting that virtual IKEA couch in your living room view, the couch is positioned more accurately.

However, the presence of a new 3D scanning sensor in an iPad obviously hints that someone would, sooner or later, develop a specialized 3D scanning app to make good use of it.

That now seems to have happened, with startup SiteScape now beta-testing just such an app

https://www.fabbaloo.com/blog/2020/8/2/first-lidar-3d-scanning-apps-appearing

Há-que admirar o rapaz, isto é uma bela duma Engenhoca, para atirar berlindes, um Brinquedo feito para o tiro-ao-alvo de Escritório, ou Oficina...

Toy Crossbow

NobodyNothing13 

I started designing this crossbow in Tinkercad a while back, and it came out pretty well. After I finished, the design just sat untouched. Recently, I have looked back at my old design, noticing it still had many issues, like the fact that you had to use hot glue to assemble it, the striker was very short, nothing held the marble in place, it wasn't very powerful, and so on. So, I started refining this design, and fixed a lot of problems and made this crossbow easier to use, easier to assemble, more powerful and more accurate.

I made this toy crossbow to be a toy, and also part of a game. You can just launch marbles around for fun, but you can also play a game with these, with as many players as you want. In the game, you have a crossbow, some marbles, and 5 targets (I used plastic army guys). Then, you take turns shooting at your opponent's targets. You launch a marble, they launch a marble, and so on. I usually draw boundaries of how close your crossbow can get to your opponent's targets. You are eliminated if all 5 of your targets fall, and the last person who still has standing targets wins!

In the rest of this instructable, I will tell you how to print, assemble, and use this crossbow.

https://www.instructables.com/id/Toy-Crossbow/

Podem assim ter as vossas àrvores, a partir de galhos?

Uma grande ajuda aos Jardineiros, amadores ou profissionais...

Grow Trees From Twigs On Your Homestead 

Homesteading

Want to grow trees from twigs on your homestead? Use this method to save money and time as you watch your trees thrive and grow!

https://i.pinimg.com/564x/a5/47/9c/a5479c712a2e384ff6c16222b4687c95.jpg

Imprimir objectos ocos? E moldes para metal feitos na vossa Impressora, um tico-tico, corte para serra manual, e um Spinner non stop

Se quizerem imprimir Objectos 3D, com uma data de buracada, o que os torna mais leves e rápidos nde imprimir, sigam este Tutorial: 

How to 3D Print Hollow Objects – Simply Explained

Pranav Gharge 

Have you ever wondered whether hollowing out a model is a good idea or not? Well, the simple answer is that since 3D printing is a volume-based production technique, there’s almost always a benefit to some degree of hollowing out of a print. Hollowing can save you printing material, time, and money, and of course, potentially improve your prints.

In this piece, we’ll discuss hallowing prints in general for FDM, SLA, DLP, and LCD (resin) printing. Then, we’ll focus on the three main ways to hollow out your prints: with a slicer, vase mode, or a modeling program (we choose Meshmixer as our example). And finally, we’ll go over some considerations for when and how much to hollow. 

https://all3dp.com/2/how-to-3d-print-hollow-objects-simply-explained/

Moldem chapa de metal, usando ferramentas impressas em 3Dmais rápidas e fáceis de produzir do que por Maquinação CNC:

Bending steel with plastic 3D printed toolsStuff Made Here 

I've been wondering if 3D printed tools could possibly bend steel. It seemed possible unlikely. I designed and printed several tools which are used on a hydraulic press to bend and form steel sheet metal. This particular tool could be made by CNC machining the tools from metal but 3D printing it is much faster and easier 

https://www.youtube.com/watch?v=WuY2-OrT9ig

Eis 2 vídeos de Daniele Tartaglia de seguida, o primeiro, uma serra tico-tico bem bacana:

How to make SCROLL SAW machine DIY
Daniele Tartaglia

https://www.youtube.com/watch?v=79MQiMw1XMo

O segundo Vídeo de Daniele Tartaglia ensina-vos a fazer uma estação de corte para o vosso tico-tico, sem os erros de corte do costume...

How to make JIGSAW Cutting Station - PERFECT corner cutting
Daniele Tartaglia


https://www.youtube.com/watch?v=HfW0J4r7y-o&feature=em-uploademail

Estou farto de dizer que para uma Proof-of-concept não precisam de passar logo a um Produto Acabado, e aqui está mais uma prova.

Este nosso amigo fala de Energia Grátis; 

Certo, o Spinner rodará até que avarie, ou os Ìmanes percam força, cerca de 400 anos, para isso...

Mas saír alguma energia que se aproveite, só com uma data destes aparelhos em série, mas dá para um Brinquedo de Secretária impecável:

Free Energy Magnetic Fidget Spinner 100% Real working new idea technology

Multi Electric  

Free Energy Magnetic Fidget Spinner 100% Real working new idea technology

Visit my facebook page   fb.me/freeMultiElectric 

https://www.pinterest.pt/pin/620933867362615989/

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