Comment on genius

• faythofdragons@slrpnk.net ⁨2⁩ ⁨days⁩ ago

  Yeah, but to get there, you need a prototype. There’s nothing wrong with testing the fit using 3D printing before you order a copy in real materials, just don’t put it under any load.

  You could print it with normal plastic filaments, but those can deform and screw with the measurements if you’ve got a really tight fit, so metal printing is a good use there.

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  • UniversalBasicJustice@lemmy.dbzer0.com ⁨2⁩ ⁨days⁩ ago

    Aerospace manufacturing has a paper trail longer than you can imagine. The company selling this part can tell you (well, the FAA) the exact ingot out of the foundry and every single process and every person who has touched it since then.

    No machine shop will take this job; the moment this guy is unable to produce a serial number and paperwork from the real manufacturer (likely during preflight if not installation) the FAA will track down the owner of said shop. At best that owner will lose their business and pay a massive fine, at worst spend a good long time in prison.

    The FAA doesn’t fuck around and for that I am thankful.

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    • EtherWhack@lemmy.world ⁨2⁩ ⁨days⁩ ago

      Also, one-offs aren’t really allowed outside of r&d. Everything has to have at least one piece in a batch go through testing, including destructive.

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    • explodicle@sh.itjust.works ⁨2⁩ ⁨days⁩ ago

      How is the machine shop supposed to know it’s an aerospace part? The customer could just give them a reverse-engineered CAD file.

      (Academic question, because making this part actually work will cost >$1500 without economies of scale)

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      • UniversalBasicJustice@lemmy.dbzer0.com ⁨2⁩ ⁨days⁩ ago

        Depends on how much effort went into reverse engineering the part, but most likely when tolerancing enters the conversation. Most machine shops aren’t able to hit those tolerances and would laugh you out of the shop.

        A shop that can hit those tolerances will kick you out of the shop; there’s a good chance they already work in aerospace. They have a deeply vested interest in avoiding the accompanying FAA inquiry should it be installed or, Satan forbid, actually flown.

        A non-aerospace shop capable of meeting those tolerances would start laughing at the desired price point. Purchasing a suitable blank alone would cost over $1500, much less cover the actual machining.

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    • CookieOfFortune@lemmy.world ⁨2⁩ ⁨days⁩ ago

      It would have to be an experimental aircraft. Someone died recently when they installed a 3D printed intake that melted on their experimental single seater.

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  • bdonvr@thelemmy.club ⁨2⁩ ⁨days⁩ ago

    I get what you’re saying but this what is called the “Jesus Nut”. That’s because it’s one piece that essentially holds your entire helicopter up. To quote the Wikipedia page: …“whose breakdown would result in catastrophic consequences, the suggestion being that in such case the only thing left to do would be to pray to Jesus, or that the component’s importance could be likened to the importance of Jesus to Christianity.”

    You don’t prototype this. You don’t make these. You get the tested, real part. There is no scenario in which making your own is advisable. Unless you’re an engineer for an aircraft manufacturer who is going to be doing rigorous testing then you should just buy the part ready made and certified.

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    • JoeBigelow@lemmy.ca ⁨2⁩ ⁨days⁩ ago

      Lol the meme is the picture on the wiki mirrored and edited

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    • nightofmichelinstars@sopuli.xyz ⁨2⁩ ⁨days⁩ ago

      no scenario

      Absolutes always get me scheming. What if you’re stuck on a deserted island with only a working 3d printer and a helicopter missing this part? What then? Yeah probably swim.

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      • Bytemeister@lemmy.world ⁨2⁩ ⁨days⁩ ago

        Use the radio in the helicopter to call for help?

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      • bdonvr@thelemmy.club ⁨2⁩ ⁨days⁩ ago

        I’d say cry, the small loss of water will bring the sweet release of death one step closer.

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      • captainlezbian@lemmy.world ⁨1⁩ ⁨day⁩ ago

        You build a boat out of the helicopter and 3d printed parts. I’ll be a bad boat, but the best case scenario for this 3d printed part is that it breaks under static load

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    • UniversalBasicJustice@lemmy.dbzer0.com ⁨2⁩ ⁨days⁩ ago

      If an aerospace engineer made one of these he would no longer be an aerospace engineer.

      Everything else you said is correct.

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    • ShinkanTrain@lemmy.ml ⁨2⁩ ⁨days⁩ ago

      Hah, Jesus nut

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    • faythofdragons@slrpnk.net ⁨2⁩ ⁨days⁩ ago

      So the design has never changed since it was made? The engineers have never needed to figure out an upgrade or slightly different way of doing it?

      Of course randos don’t make them in their garage, but somebody does, and I don’t see a problem with experts incorporating this into their workflow. I don’t know why you do?

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      • bdonvr@thelemmy.club ⁨2⁩ ⁨days⁩ ago

        I think we’ve lost the context here. The person in the photo self-describes as a consumer - they should not be making this. That’s the joke.

        Somebody who would be prototyping something like this works for an aircraft manufacturer, and there’s probably less than a thousand of such people in the world. If you are one such person you know so.

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  • Entertainmeonly@lemmy.blahaj.zone ⁨2⁩ ⁨days⁩ ago

    The part already exists though?

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