A 3D Printed 16mm Movie Camera
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A 3D Printed 16mm Movie Camera
The basic principles of a motion picture film camera should be well understood by most readers — after all, it’s been well over a hundred years since the Lumière brothers wowed 19th century Paris with their first films. But making one yourself is another matter entirely, as they are surprisingly complex and high-precision devices. This hasn’t stopped [Henry Kidman] from giving it a go though, and what makes his camera more remarkable is that it’s 3D printed.
The problem facing a 16mm movie camera designer lies in precisely advancing the film by one frame at the correct rate while filming, something done in the past with a small metal claw that grabs each successive sprocket. His design eschews that for a sprocket driven by a stepper motor from an Arduino. His rotary shutter is driven by another stepper motor, and he has the basis of a good camera.
The tests show promise, but he encounters a stability problem, because as it turns out, it’s difficult to print a 16mm sprocket in plastic without it warping. He solves this by aligning frames in post-processing. After fixing a range of small problems though, he has a camera that delivers a very good picture quality, and that makes us envious.
Sadly, those of us who ply our film-hacking craft in 8mm don’t have the luxury of enough space for a sprocket to replace the claw.
youtube.com/embed/ZAtYJYfV2nA?…
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Gli ultimi otto messaggi ricevuti dalla Federazione
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@hipsterelectron I wonder how many CVEs have been filed against the CVE website
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OF COURSE THE CVE WEBSITE DOESN'T WORK ON FIREFOX
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-il suo livello di napoletano?
-eccellente!
-allora mi traduca "sembra il mio amico proveniente dalla capitale francese"
-par is!
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Building a Hydraulic Gear Pump Isn’t So Easy
The gear pump prototype in action. (Credit: Artisan Makes, YouTube)
Hydraulic gear pumps are deceptively simple: just two gears rotating together, forcing the hydraulic oil from one side to the other where the teeth don’t meet, and thus providing the ability to pressurize said oil to make hydraulic cylinders, final drives, etc. do their thing. As with most machining projects like this, the devil is absolutely in the details, particularly in the tolerances. This is the crash course that the [Artisan Makes] channel on YouTube is currently going through.In this part one of a series on a DIY gear pump, scrap aluminium is used for the housing, along with 1045 medium carbon steel for the gears and W1A high carbon steel for bearings and other wear surfaces. Since at least one of the gears needs to be driven, a lip seal rated for 10 bar is used to provide a path for the shaft. As noted in the video, this is supposed to be a learning experience, ergo it’s a simplified design that merely targets being functional as a gear pump.
With the basic design figured out, the parts were created on the lathe and mill, followed by assembly. Most of the controversy is about the tolerances within the housing, as any leakage will reduce the efficiency. This means the spacing between the gears and housing, space between the gears and bearings, as well as that provided by the gasket that seals the housing base and top. This is where the comment section somewhat explodes with criticism and advice.
As can be seen in the demonstration with a better gasket, there is absolutely flow when driven at 1200 RPM, but also clearly severe leakage as evidenced by said flow not moving quite as fast as it should. We’re looking forward to the next part, in which addressing these tolerances is tackled, with hopefully a much more performant gear pump resulting.
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Che poi, spacciano per Made in Italy ciò che non lo è, ma il vero Made in Italy costa. Gli italiani, in massa, hanno perso la capacità di capire la qualità, quindi vanno di schifezze a prezzi bassissimi. Il Casentino ti dura una vita ma costa. Quando avranno capito che il low cost non esiste perché qualcuno il prezzo lo paga, la filiera italiana sarà morta e sepolta. Amen.
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@Linkshaender
che meraviglia!
buonanotte Armin 🌌
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frugando nella scatola dei ricordi 🐾«la Mimì col Trottola»
mag.1991
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@thatgiga
La perfezione ❤️
