3D Printed “Book” Demonstrates Mechanical ActionsA book of mechanical actions is a wondrous thing — mechanically inclined children have lost collective decades pouring over them over the generations.
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3D Printed “Book” Demonstrates Mechanical Actions
A book of mechanical actions is a wondrous thing — mechanically inclined children have lost collective decades pouring over them over the generations. What could possibly be better? Why, if the mechanisms in the book were present, and moved! That’s exactly what [AxelMadeIt] produced for a recent video.
Being just four pages, you might argue this is but a pamphlet. But since it takes up a couple inches of shelf space, it certainly looks like a book from the outside, which is exactly what [AxelMadeIt] was going for. To get a more book-like spine, his hinge design sacrificed opening flat, but since the pages are single-sided, that’s no great sacrifice.
At only 6 mm (1/4″) thick, finding printable mechanisms that could actually fit inside was quite a challenge. If he was machining everything out of brass, that would be room for oodles of layers. But [Axel] wanted to print the parts for this book, so the mechanisms need to be fairly thick. One page has a Roberts linkage and a vault-locking mechanism, another has planetary gears, with angled teeth to keep them from falling out. Finally, the first page has a geneva mechanism, and an escarpment, both driven by a TPU belt drive.
All pages are driven from an electric motor that is buried in the last page of the “book”, along with its motor, battery, and a couple of micro-switches to turn it on when you open the book and off again when you reach the last page. Rather than a description of the mechanisms, like most books of mechanical actions, [Axel] used multi-material printing to put lovely poems on each page. A nice pro-tip is that “Futura”, a font made famous by flying to the moon, works very well when printed this way. If you just want to watch him flip through, jump to 8:00 in the video.
This reminds us of another project we once featured, which animated 2100 mechanical mechanisms. While this book can’t offer near that variety, it makes up for it in tactility.
youtube.com/embed/RgPqE28IUkw?…
Gli ultimi otto messaggi ricevuti dalla Federazione
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@stefano Reading ability on some platforms is worrying. At the top of that post it say 10 min read. Whole 10 min worth of words. And there're no "Summarize it with ${MODEL_NAME} buttons". How are you suppost to read it? :)
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@ukscone I read the book, really great.
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Oggi sto una chiavica, sembro una bestia in gabbia.
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The average level of certain comments on some platforms is truly worrying. Although English is not my native language, I believe it is quite clear that the first part of the latest blog post talks about my first experience with FreeBSD, in 2002. Yet some people keep saying that it is impossible that “with 64 GB of RAM you cannot use mutt while compiling” and they start with the insults.
I should know better by now, but every time it still makes me smile. 🙂
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Quindi:
Prima, "possiamo distruggere il terminal petrolifero di Kharg quando vogliamo".
Poi, "Lasciamo uscire le petroliere iraniane dallo Stretto di Hormuz, vogliamo che il mondo sia ben rifornito".
Minus habentes ne abbiamo?U.S. is allowing Iranian oil tankers through Strait of Hormuz, says Bessent https://cnb.cx/4dn9XUn
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LEGO Machine Plays Tic-Tac-Toe Without Electronics
Tic-Tac-Toe is a relatively simple game, and one of the few which has effectively been solved for perfect play. The nature of the game made it possible for [Joost van Velzen] to create a LEGO machine that can play the game properly in an entirely mechanical fashion.
The build features no electronics to speak of. Instead, it uses 52 mechanical logic gates and 204 bits of mechanical memory to understand and process the game state and respond with appropriate moves in turn. There are some limitations to the build, however—the game state always begins with the machine taking the center square. Furthermore, the initial move must always be played on one of two squares—given the nature of the game though, this doesn’t really make a difference.
It’s also worth heading over to the Flickr page for the project just to appreciate the aesthetics of the build. It’s styled in the fashion of an 18th-century automaton or similar. It’s also been shared on LEGO Ideas where it’s raised quite a profile.
If you’ve ever wanted to think about computing in a mechanical sense, this build is a great example of how it can be done. We often see some fun LEGO machines around these parts, from massive parts sorters to somewhat-functional typewriters.
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@quinta Per fortuna in Italia non sta succedendo niente di simil...oh wait
https://www.ilpost.it/charlie/chi-sono-gli-editori-italiani-2/
(Dal Post articolo sugli scenari che si stanno aprendo per le proprietà dei maggiori quotidiani italiani)(Per le TV siamo stati apripista, sui social ci pensa Trump anche per noi)
