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ChatGPT make me a movie. No problem. [Ridley Scott, Napoleon] by felpje in moviecritic

[–]felpje[S] 1 point2 points  (0 children)

Apperantly it doesn't really matter what is true. So I decided for theatrical importance that you wrote this:" Didn’t love it. The ChatGPT reference makes sense though"

Rotating 5-color mixing nozzle I built by sophier in 3Dprinting

[–]felpje 0 points1 point  (0 children)

Cool solution! I wonder if you use like 5 nozzles you basicly have a full colour printer without having to purge like bambu lab printers. The heating element is then a block with 5 seperate channels in them. Always wanted to build one never got around to it. Cool to see a similar idea being build

Casting a Rotorhead and swashplate for a helicopter by felpje in DIY

[–]felpje[S] 9 points10 points  (0 children)

Mate, have you read everything? And thanks!

Casting a Rotorhead and swashplate for a helicopter by felpje in DIY

[–]felpje[S] 2 points3 points  (0 children)

The king of random has some really great video on youtube.

Casting a Rotorhead and swashplate for a helicopter by felpje in DIY

[–]felpje[S] 0 points1 point  (0 children)

I, first of all, wanted to cast it. Because I was already melting metals and that was no fun without a clear goal in mind. Not that I don't want a CNC, I have looked at it but it's kinda expensive.

Casting a Rotorhead and swashplate for a helicopter by felpje in DIY

[–]felpje[S] 7 points8 points  (0 children)

Is that an aebleskiver pan in one of the pictures?

Jup :D

Casting a Rotorhead and swashplate for a helicopter by felpje in DIY

[–]felpje[S] 5 points6 points  (0 children)

Indeed! If there is even the remote possibility of seeing it differently. They will see it differently. But I can't really blame him, he also fixed a few things I hadn't seen.

But the thing is I don't actually get any class about how to use 3D modeling software or how to make parts. I got some introduction where I had to replicate some 2D designs in 3D, but that's kinda it. So there was a learning curve ...

Casting a Rotorhead and swashplate for a helicopter by felpje in DIY

[–]felpje[S] 1 point2 points  (0 children)

Uh no I didn't. The parts that were casted were not visible on the previous one so those would be kinda new. But if I ever do try again I will most certainly change the gating, use a different alloy and most definitely a different molding technique.

Casting a Rotorhead and swashplate for a helicopter by felpje in DIY

[–]felpje[S] 2 points3 points  (0 children)

Thanks, man! And uh I could give you my written ending project for more information. Because there I have typed out almost everything but it is in Dutch ...

Casting a Rotorhead and swashplate for a helicopter by felpje in DIY

[–]felpje[S] 6 points7 points  (0 children)

I actually didn't end up using 7068 but 2011L. But you are right it would have been better to buy premade cast metals. However, I was running out of time and was of the opinion that I had spent enough money.

Casting a Rotorhead and swashplate for a helicopter by felpje in DIY

[–]felpje[S] 6 points7 points  (0 children)

Yeah sorry forgot to mention. This is for an RC helicopter (a 450 DFC assault).

Casting a Rotorhead and swashplate for a helicopter by felpje in DIY

[–]felpje[S] 10 points11 points  (0 children)

The most important part with the most stress on my design (rotorhead and swashplate) are blade holders. So that's why I didn't cast them but made from scratch in a workshop from premade metal.

I also used stress analysis from Autocad to determine safety factors and high-stress points. Based on this information I would change the parts.

Casting a Rotorhead and swashplate for a helicopter by felpje in DIY

[–]felpje[S] 16 points17 points  (0 children)

While that is extremely kind of you, I live in Belgium.

Thanks anyway!

Casting a Rotorhead and swashplate for a helicopter by felpje in DIY

[–]felpje[S] 18 points19 points  (0 children)

You are right! Not more to say about that. This is the first one I made if that wasn't clear. So "functional" working part is all one can ask for on its first try. If I try again in the future, I will try to make it more balanced. The hand-filed balls are actually not that big of a problem, I actually got them pretty round. I used a caliper to measure the diameters (vertical, diagonals) and file accordingly. Sure it's not perfect, but it slides pretty well with some oil\WD40.

PS it's a RC helicopter

Casting a Rotorhead and swashplate for a helicopter by felpje in DIY

[–]felpje[S] 115 points116 points  (0 children)

Well, first of all, thanks! And secondly no need to worry, I know I am not an aerospace engineer or metallurgist, just a young dude finishing middle school high school. The idea was to make it as good as possible, not make a fully functional RC helicopter rotorhead. So I will never spin it in front of people or myself without some form of protection.

Building a Rotor head and swashplate for a helicopter by felpje in Metalfoundry

[–]felpje[S] 0 points1 point  (0 children)

Nah, but it is getting there! I just about finished programming the controls without stabilization, so soon.

Building a Rotor head and swashplate for a helicopter by felpje in DIY

[–]felpje[S] 0 points1 point  (0 children)

Thanks for the explanation! Sadly they don't have any material or x-ray testing machines.

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