8 ms·

I feel like claiming it is "working" and "3d printed" are tenuous at best. It did work... for several seconds before it melted. It was 3d printed... except fo

I feel like claiming it is "working" and "3d printed" are tenuous at best. It did work... for several seconds before it melted. It was 3d printed... except for the turbine, shaft, bearings, and combustion chamber which were made of metal, and the structural components which were cast from ceramic. Also, FWIW, the description of the how the turbojet came to be at the beginning is pretty grossly incorrect. It is sort of like how in grade school they say that planes fly due to the Bernoulli's principle. If you are interested to learn about how jet engines actually work and the technical details that go into them on youtube, I highly recommend AgentJayZ [1] If you want to see a youtuber make an actually good turbojet, check out these channels: -Игорь Негода [2] His videos are in russian, but are by far the most technically advanced and performant. I watch them with the auto generated/translated subtitles -Tech Ingredients [3] This is a traditional turbocharger based design, but is presented in a wonderful way packed full of interesting tech details -Colin Furze [4] The turbojet that inspired this video. Much more focused on presentation than tech details, but worth watching for the comedy at least! [1] https://www.youtube.com/c/AgentJayZ/playlists https://www.youtube.com/c/AgentJayZ/playlists [2] https://www.youtube.com/watch?v=I7GFAbtsQKs&list=PLyyfwUFI3XU8JWC1l3YLrv53ZD5l3cb8V https://www.youtube.com/watch?v=I7GFAbtsQKs&list=PLyyfwUFI3X... [3] https://www.youtube.com/watch?v=JzwfzgfJiJ4 https://www.youtube.com/watch?v=JzwfzgfJiJ4 [4] https://www.youtube.com/watch?v=Gh34A0b8MrE https://www.youtube.com/watch?v=Gh34A0b8MrE

ObsoleteNerd 6y ago
His entire point is trying to get stuff working (even for a few seconds) using cheap hobbyist printers and not requiring skills in metal fabrication or any special equipment. With that goal in mind, I think he does incredibly well on his projects. Of course other people can do better with CNCs and years of engineering/fabrication skills. That's like saying it's not worth playing with DIY "anything" because other people can do it better than you.
- TylerE 6y ago
  it works in the sense that a thrown brick flys.
  - user-the-name 6y ago
    Definitely not. A turbojet is not something you can make work by just brute force. This isn't a usable turbojet engine, but it did work, for a short while, and that is a real achievement.
- justinclift 6y ago
  Yeah. And if the maker here does a few more iterations of the engine it should become much more refined. :)
- Blikkentrekker 6y ago
  Then the news article should have mentioned that point. But the news article very much arouses the impression that that is not his point, that his point is something other, and that he succeeded at said other point, he never endeavored to succeed at.
  - canadianfella 6y ago
    What?
userbinator 6y ago
That Russian channel came to mind instantly when you mentioned "youtuber make an actually good turbojet" --- he even builds a plane for it, and flies it too. Extremely impressive.
- neatze 6y ago
  In one of his videos, if not mistaken, he use angle grinder to build turbo jet engine, from scratch. He also connected jet engine(s) to a car, that actually worked.
hhh 6y ago
Honestly, the Turbojet video is one of the less interesting videos on his channel in my opinion. The others are MUCH better.
- vagrantJin 6y ago
  What are your realistic expectations of a 3D printed proof of concept turbojet built in a basement by a guy who had to learn to MIG weld a few weeks prior?
WalterBright 6y ago
> It did work... for several seconds before it melted. To be fair, the Me-262 turbojet engines only worked a few hours before they melted, too.
cambalache 6y ago
Thanks for the videos... Osamagirl69, it seems you know about relatively-obscure quality stuff on youtube, Do you have per any chance more recommendations (it does not have to be on this topic)
- magicalhippo 6y ago
  One mans obscure find is another mans daily bread, but... Marco Reps[1] has a lot of interesting maker stuff, along with some (IMHO) great humor. I've been enjoying Robert Feranecs[2] channel for some detailed PCB design stuff. Has had some great interviews and deep dives. CuriousMarc[3] has some really great stuff on restoring the Apollo Guidance Computer, with explanations of the hardware and what they have to do to try to reverse engineer it and so on. I've also enjoyed a lot of what Robert Baruch[4] has put out. He had some great explanation and practical demonstration of line termination, as well as got me into FPGAs. [1]: https://www.youtube.com/channel/UC1O0jDlG51N3jGf6_9t-9mw https://www.youtube.com/channel/UC1O0jDlG51N3jGf6_9t-9mw [2]: https://www.youtube.com/channel/UCJQkHVpk3A8bgDmPlJlOJOA https://www.youtube.com/channel/UCJQkHVpk3A8bgDmPlJlOJOA [3]: https://www.youtube.com/channel/UC3bosUr3WlKYm4sBaLs-Adw https://www.youtube.com/channel/UC3bosUr3WlKYm4sBaLs-Adw [4]: https://www.youtube.com/channel/UCBcljXmuXPok9kT_VGA3adg https://www.youtube.com/channel/UCBcljXmuXPok9kT_VGA3adg
djmips 6y ago
The original posted video is a classic case of something that's impressive to someone who is ignorant of the field.
- aunty_helen 6y ago
  As someone who sat beside a 33k lb thrust engine with a laptop attached as they dry started it, this is impressive.
yarcob 6y ago
I loathe how everything on the internet has become this worldwide competition. Somebody does something, and immediately everyone says, well, this other person did this much better. Like, who cares? This guy built something, made fun videos about it, and apparently people like to watch him. Who cares if someone else made something better?
- ricc 6y ago
  Because that’s how we develop scientifically and technologically as a species?
- anticristi 6y ago
  I do. These are not "my friend John". These are professional YouTubers that compete for attention to make revenue out of ads and sponsorship. Just as you compare car manufacturers, so the best gets most revenue, it makes perfect sense to compare YouTubers. Also, please don't forget to like my comment and hit that subscribe button.
  - jcelerier 6y ago
    > These are professional YouTubers when everyone becomes "professional", no one is anymore
    - amanaplanacanal 6y ago
      Doesn’t professional just mean it makes them money?
      - jcelerier 6y ago
        not in my mother tongue at least
    - anticristi 6y ago
      In my circles, professional has a very clear definition: 80% of your revenue comes from your profession.
PoachedSausage 6y ago
There is also the excellent "The Jet Engine" book by Rolls-Royce: https://hermessuspendeme.com/DOCS/GrevaEdgar/greva%202B/2B/Sistemes%20propulsius/MACI/166837_EB161_rolls_royce_the_jet_engine_fifth_edition_gazoturbinnyy_dviga.pdf https://hermessuspendeme.com/DOCS/GrevaEdgar/greva%202B/2B/S...

ObsoleteNerd 6y ago

His entire point is trying to get stuff working (even for a few seconds) using cheap hobbyist printers and not requiring skills in metal fabrication or any special equipment. With that goal in mind, I think he does incredibly well on his projects. Of course other people can do better with CNCs and years of engineering/fabrication skills. That's like saying it's not worth playing with DIY "anything" because other people can do it better than you.

TylerE 6y ago
it works in the sense that a thrown brick flys.
- user-the-name 6y ago
  Definitely not. A turbojet is not something you can make work by just brute force. This isn't a usable turbojet engine, but it did work, for a short while, and that is a real achievement.
justinclift 6y ago
Yeah. And if the maker here does a few more iterations of the engine it should become much more refined. :)
Blikkentrekker 6y ago
Then the news article should have mentioned that point. But the news article very much arouses the impression that that is not his point, that his point is something other, and that he succeeded at said other point, he never endeavored to succeed at.
- canadianfella 6y ago
  What?

userbinator 6y ago

That Russian channel came to mind instantly when you mentioned "youtuber make an actually good turbojet" --- he even builds a plane for it, and flies it too. Extremely impressive.

neatze 6y ago
In one of his videos, if not mistaken, he use angle grinder to build turbo jet engine, from scratch. He also connected jet engine(s) to a car, that actually worked.

hhh 6y ago

Honestly, the Turbojet video is one of the less interesting videos on his channel in my opinion. The others are MUCH better.

vagrantJin 6y ago
What are your realistic expectations of a 3D printed proof of concept turbojet built in a basement by a guy who had to learn to MIG weld a few weeks prior?

WalterBright 6y ago

> It did work... for several seconds before it melted. To be fair, the Me-262 turbojet engines only worked a few hours before they melted, too.

cambalache 6y ago

Thanks for the videos... Osamagirl69, it seems you know about relatively-obscure quality stuff on youtube, Do you have per any chance more recommendations (it does not have to be on this topic)

magicalhippo 6y ago
One mans obscure find is another mans daily bread, but... Marco Reps[1] has a lot of interesting maker stuff, along with some (IMHO) great humor. I've been enjoying Robert Feranecs[2] channel for some detailed PCB design stuff. Has had some great interviews and deep dives. CuriousMarc[3] has some really great stuff on restoring the Apollo Guidance Computer, with explanations of the hardware and what they have to do to try to reverse engineer it and so on. I've also enjoyed a lot of what Robert Baruch[4] has put out. He had some great explanation and practical demonstration of line termination, as well as got me into FPGAs. [1]: https://www.youtube.com/channel/UC1O0jDlG51N3jGf6_9t-9mw https://www.youtube.com/channel/UC1O0jDlG51N3jGf6_9t-9mw [2]: https://www.youtube.com/channel/UCJQkHVpk3A8bgDmPlJlOJOA https://www.youtube.com/channel/UCJQkHVpk3A8bgDmPlJlOJOA [3]: https://www.youtube.com/channel/UC3bosUr3WlKYm4sBaLs-Adw https://www.youtube.com/channel/UC3bosUr3WlKYm4sBaLs-Adw [4]: https://www.youtube.com/channel/UCBcljXmuXPok9kT_VGA3adg https://www.youtube.com/channel/UCBcljXmuXPok9kT_VGA3adg

djmips 6y ago

The original posted video is a classic case of something that's impressive to someone who is ignorant of the field.

aunty_helen 6y ago
As someone who sat beside a 33k lb thrust engine with a laptop attached as they dry started it, this is impressive.

yarcob 6y ago

I loathe how everything on the internet has become this worldwide competition. Somebody does something, and immediately everyone says, well, this other person did this much better. Like, who cares? This guy built something, made fun videos about it, and apparently people like to watch him. Who cares if someone else made something better?

ricc 6y ago
Because that’s how we develop scientifically and technologically as a species?
anticristi 6y ago
I do. These are not "my friend John". These are professional YouTubers that compete for attention to make revenue out of ads and sponsorship. Just as you compare car manufacturers, so the best gets most revenue, it makes perfect sense to compare YouTubers. Also, please don't forget to like my comment and hit that subscribe button.
- jcelerier 6y ago
  > These are professional YouTubers when everyone becomes "professional", no one is anymore
  - amanaplanacanal 6y ago
    Doesn’t professional just mean it makes them money?
    - jcelerier 6y ago
      not in my mother tongue at least
  - anticristi 6y ago
    In my circles, professional has a very clear definition: 80% of your revenue comes from your profession.

PoachedSausage 6y ago

There is also the excellent "The Jet Engine" book by Rolls-Royce: https://hermessuspendeme.com/DOCS/GrevaEdgar/greva%202B/2B/Sistemes%20propulsius/MACI/166837_EB161_rolls_royce_the_jet_engine_fifth_edition_gazoturbinnyy_dviga.pdf https://hermessuspendeme.com/DOCS/GrevaEdgar/greva%202B/2B/S...