Some people like spinach in their salads. Others would prefer it if it never gets near their fork. Still, other folks, like [Almudena Romero], use it for printing pictures, and they’re the folks we’ll focus on today.
Anthotypes are positive images made from plant dyes that fade from light exposure. Imagine you stain your shirt at a picnic and leave it in the sun with a fork covering part of the stain. When you come back, the stain not sheltered by cutlery is gone, but now you have a permanent fork shape logo made from aunt Bev’s BBQ sauce. The science behind this type of printmaking is beautifully covered in the video below the break. You see, some plant dyes are not suitable for light bleaching, and fewer still if you are not patient since stains like blueberry can take a month in the sun.
The video shows how to make your own plant dye, which has possibilities outside of anthotype printing. Since the dye fades in sunlight, it can be a temporary paint, or you could use samples all over your garden to find which parts get lots of sunlight since the most exposed swatches will be faded the most. Think of a low-tech UV meter with logging, but it runs on spinach.
If the science doesn’t intrigue you, the artistic possibilities are equally cool. All the pictures have a one-of-a-kind, wabi-sabi flare. You take your favorite photo, make it monochrome, print it on a transparent plastic sheet, and the ink will shield the dye and expose the rest. We just gave you a tip about finding the sunniest spot outdoors, so get staining.
The journalist’s art is now one of the computer keyboard and the internet connection, but there was a time when it involved sleepless nights over a manual typewriter followed by time spent reviewing paper proofs freshly inked from hot lead type. Newspapers in the golden age of print media once had entire floors of machinery turning text into custom metal type on the fly, mechanical masterpieces in the medium of hot lead of which Linotype were the most famous manufacturer.
Computerised desktop publishing might have banished the Linotype from the newsroom in the 1970s or 1980s, but a few have survived. One of the last working Linotypes in Europe can be found in a small print workshop in Vienna, and since its owner is about to retire there is a move to save it for posterity through a crowdfunding campaign. This will not simply place it in a museum as a dusty exhibit similar to the decommissioned Monotype your scribe once walked past every day in the foyer of the publishing company she then worked for, instead it will ensure that the machine continues to be used on a daily basis producing those hot metal slugs of type.
Fronting the project is [Florian Kaps], whose pedigree in the world of resurrecting analogue technologies was established by his role in saving the Polaroid film plant in Enschede, Netherlands. There are a variety of rewards featuring Linotype print, and at the time of writing the project is 46% funded with about four weeks remaining. If you are curious about the Linotype machine and its operation, we’ve previously brought you an account of the last day of hot metal printing at the New York Times.
This radial residence was materialized out of concrete in Stupino, Russia by [Apis Cor], and six collaborating companies, as a prototype. As opposed to traditional — such as it is for tech largely in its infancy — assembly of pre-printed or fabricated pieces, the building was printed as a whole, with the printer removed by crane before finishing the rest of the construction. It features a bathroom, hallway, living room, and a compact kitchen — everything a bachelor or bachelorette needs.
There’s nothing wrong with the rough experiments like hanging a 1 L bottle of water from the end of a rectangular test print to compare strengths. We also have our rules-of-thumb, like expecting the print to perform at 30% of injection molded strength. But these experiments are primitive and the guidelines are based on hearsay. Like early metallurgy or engineering; 3D printing is full of made-up stuff.
What [Sam] has done here is really amazing. He’s produced a model of a printed ABS part and experimentally verified it to behave close enough to the real thing. He’s also set a method for testing and proposed a new set of questions. If it couldn’t be better, he also included his full research notebook. Make sure to read the FDMProperties-report (PDF) in the files section of Hackaday.io.
If research like this is being done elsewhere, it’s either internal to a large 3D printer manufacturer, or it’s behind a paywall so thorough only the Russians can help a regular peasant get through to them. Anyone with access to a materials testing lab can continue the work (looking at you every single engineering student who reads this site) and begin to help everyone achieve an understanding of 3D printed parts that could lead to some really cool stuff one day.
Inside the second edition of the Hackaday Omnibus is 128 pages of actual, real content. There are zero ads, no sponsored content, and absolutely nothing that tells you to go out and buy something. Opening it is an experience unlike anything. Where can you read something for minutes at a time with no interruptions, no email, no Twitter, no Facebook, no text messages, and no ads? You won’t find something like this anywhere else.
The electronics, trade, and tech magazines have a long and storied history. In the 1930s, there were magazines that would teach you how to build a radio. In the 1950s, there were print articles saying fusion power was just fifty years away. The Hackaday Omnibus continues this tradition with relevant content for today: everything from car hacking and open source insulin, to retrospectives on oft-forgotten parts of our digital heritage are included. This is the best we have to offer, and we’re doing it without selling out.
Volume Two of the Hackaday Omnibus isn’t the end for our print endeavours – we’re just getting started. We’re committed to producing the best content in an interruption-free format. Print is dead, after all, and that’s why we put a skull on it.
You can purchase the Hackaday Omnibus Volume Two on the Hackaday Store.
It’s no secret that a great deal of Western civilization was informed by the ancient Greeks. They revolutionized mathematics and geometry, developing astronomy along the way. They built ornate statues, beautiful temples to the gods, and amphitheaters for live entertainment with astonishing acoustics. The influence of the ancient Greeks shaped almost every field of human knowledge, from the arts and architecture to politics, philosophy, science, and technology.
Like the Babylonians, the Greeks paid close attention to the night sky. Our nearest celestial neighbor, the Moon, was particularly important to them from a planning perspective. For instance, debts might be due on the new Moon. By heeding the Moon’s phases and taking note of eclipse cycles, they found that their harvests were more fruitful, and they had fewer incidents at sea.
As savvy and well-rounded as ancient Hellenistic culture appears to have been, it’s not unreasonable to imagine that the Greeks could have created some kind of computing machine to make their Moon-centered scheduling easier. Based on fragments from in a shipwreck that was discovered in 1900, it seems they did exactly this. Based on scientific dating of the coins and pottery found in the wreck and inscriptions on the bronze remnants, historians and scientists believe the Greeks created a mechanical computer capable of calculating the positions of the Sun and the Moon on any given day. This marvelous device is known as the Antikythera mechanism.
The mechanism was housed in a wooden box and controlled with a knob on one side. It is believed that the front of the box was a display made up of a set of concentric rings with graduations, and that each ring corresponded with one celestial body. Pointers attached perpendicularly to output gears moved around the rings as the knob was turned, showing the paths and positions of these celestial bodies over time. This Earth-centric planetarium also displayed the phase of the Moon as well as the positions of the five major planets known to the ancient Greeks—Mercury, Venus, Mars, Jupiter, and Saturn.
Now is your chance to hold a piece of Hackaday in your hands. Last year we announced our first ever print edition. We continue that tradition with a much bigger offering. Hackaday Omnibus vol #02 gathers the best content from Hackaday over the last year. This includes in-depth original content, incredible art, the events that mattered over the last 12 months, and a few cryptic easter eggs.
[Joe Kim], Hackaday’s Art Direct, really outdid himself with the cover this year. Inspired by an epic movie, the illustration includes a shoutout to almost every article found within. Of course there is a lot more of his work inside, along with the efforts of dozens of writers, artists, editors, and more.
All 128 pages of Omnibus vol #02 were painstakingly laid out by [Aleksandar Bradic] who enlisted the help of a dedicated core of Hackaday.io members to help pore over the final drafts, ensuring the presentation is immaculate. Along the way some of them teamed up to roll in those easter eggs that I previously mentioned. We don’t even know what all of it means, you should be the first to solve the mystery.
Most of the 31 articles that grace these pages have run past the front page of Hackaday. But there are a few that were written specifically for the print edition. These will be published on our front page starting in 90 minutes and continuing for a few weeks. It is important to us to share these great works without the need to purchase anything. But the Omnibus is truly one of the coolest pieces of tech literature that you can own. It deserves a place on your coffee table, reception area at work, and as a gift for all who love to know how things work, how things were built, and the legacy of knowledge that has come from generations of hacking.
We’re only running a single printing of this gorgeous volume. Make sure you get one of your own by placing a pre-order now. Be one of the first 500 using coupon code OMNIBUS2015 and get it for just $10! Show that you support great content and help make future projects like this possible.