No. No.
For this part? No. You want the real deal. The proper metal. The proper alloy, annealed correctly.
Comment on genius
JelleWho@lemmy.world 2 days ago
To be fair, if you don’t have the files. This is an easy way to make a prototype and fit it, and then if it fits you can order it in metal. This is a cheaper proces in iternating in metal from the start
bdonvr@thelemmy.club 2 days ago
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.
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.
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.
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)
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.
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.
JoeBigelow@lemmy.ca 2 days ago
Lol the meme is the picture on the wiki mirrored and edited
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.
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.
ShinkanTrain@lemmy.ml 2 days ago
Hah, Jesus nut
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?
Entertainmeonly@lemmy.blahaj.zone 2 days ago
The part already exists though?
FartsWithAnAccent@fedia.io 2 days ago
You can also print in different metals with various processes like laser sintering, still though, there are some things you might not want to skimp on: Probably best to stick to approved parts.
rbos@lemmy.ca 2 days ago
It wouldn’t surprise me if such a critical part was cast as a single metal crystal. The stresses on that rotor mist be unbelievable.
TriflingToad@lemmy.world 2 days ago
I’m sure it’s safe if you can do it correctly, but I would not trust myself like that
HertzDentalBar@lemmy.blahaj.zone 2 days ago
Pretty sure you don’t want a be doing that with an aircraft.
bizarroland@lemmy.world 2 days ago
If the choice is between being out $1,590 or plummeting to my death in order to save a few hundred bucks, then I’ll just pay the $1,590.
They call it the Jesus Nut for a reason.
SatansMaggotyCumFart@piefed.world 2 days ago
Because it makes Jesus Nut?
FilthyShrooms@lemmy.world 2 days ago
Because if it fails, only Jesus can save you
Whostosay@sh.itjust.works 2 days ago
Bull honkey, knock the rust off 'er, slap on some grease and she’s good as new
shalafi@lemmy.world 2 days ago
That’s what has me grinning! I’m not replacing a Jesus nut with anything that didn’t come straight from the manufacturer.
Ilovethebomb@sh.itjust.works 2 days ago
I’ve actually flown Robinson helicopters, and there’s no nut that looks like this on the helicopter.
So, probably a joke.
tux7350@lemmy.world 2 days ago
Yeah you just have to deal with mast bumping, as if thats any less worrying.
Ilovethebomb@sh.itjust.works 2 days ago
Mast bumping is such a gentle term for the main rotor just fucking off and the helicopter going from an aircraft to a falling object.
Railing5132@lemmy.world 2 days ago
You’ve flown Robinson?
Willingly?
And lived? Brave soul.
mech@feddit.org 2 days ago
I’d rather plummet to my death.
captainlezbian@lemmy.world 1 day ago
Good news is, that part ain’t getting off the ground. Bad news is, the rotor might get kinda fast first