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Does this shape hold up good weight distribution properties when 3D-printed? Maybe this could be huge for 3D-printing mostly hollow, yet strong parts that requi

Does this shape hold up good weight distribution properties when 3D-printed? Maybe this could be huge for 3D-printing mostly hollow, yet strong parts that require in fewer plastic and time spent.

sen 8mo ago
That’s already a thing. Infill. There’s lots of variations of infill that all have different strengths and weaknesses.
- emporas 8mo ago
  There is also 3d printing origami shapes [1]. But 3D printing is still plastic(usually). The idea of origami steel sheets has stuck on my mind ever since I found out about laser welding. Cutting thin 2mm sheets of steel, stitching them back together in different shapes, and holding tons of weight? That sounds very compelling to me. [1]https://www.youtube.com/watch?v=FNVBK7-h9Fs https://www.youtube.com/watch?v=FNVBK7-h9Fs
  - dietr1ch 8mo ago
    Anyone knows how does 3D printed metals compare to CNC-made parts? I know it's been used to build engines, which suggests they are strong, but there's also all this process around ancient swords around tempering, folding, etc that suggests that maybe just 3D-printing metals might result in weaker structures.
- punnerud 8mo ago
  That’s like saying origami is already a thing. Agree that this could be cool to test as new kind of infill.
  - airstrike 8mo ago
    He didn't invent the pattern though
regularfry 8mo ago
So initially my thought was "why would this be better than existing infill patterns" but my second thought was that the reason Miura-ori patterns are interesting in the first place is because they fold. Not in this application so much, but in general, the way they flex is why they're interesting. The upshot here is that if you embedded that sort of pattern in a closed box, the degrees of freedom would try to transfer the force of a vertical load on the top to a horizontal stress in the outer shell of the base, in both x and y. A bit like a spherical dome. I'm not sure that it's better than a dome; it might be for cases where you can't predict where on the top surface the load is going to be? I'm also not sure that a sheet of printed infill is sufficiently similar in its physical properties to a sheet of paper/card for this to transfer well, but it would be an interesting experiment to do.

Does this shape hold up good weight distribution properties when 3D-printed? Maybe this could be huge for 3D-printing mostly hollow, yet strong parts that require in fewer plastic and time spent.

sen 8mo ago

That’s already a thing. Infill. There’s lots of variations of infill that all have different strengths and weaknesses.

emporas 8mo ago
There is also 3d printing origami shapes [1]. But 3D printing is still plastic(usually). The idea of origami steel sheets has stuck on my mind ever since I found out about laser welding. Cutting thin 2mm sheets of steel, stitching them back together in different shapes, and holding tons of weight? That sounds very compelling to me. [1]https://www.youtube.com/watch?v=FNVBK7-h9Fs https://www.youtube.com/watch?v=FNVBK7-h9Fs
- dietr1ch 8mo ago
  Anyone knows how does 3D printed metals compare to CNC-made parts? I know it's been used to build engines, which suggests they are strong, but there's also all this process around ancient swords around tempering, folding, etc that suggests that maybe just 3D-printing metals might result in weaker structures.
punnerud 8mo ago
That’s like saying origami is already a thing. Agree that this could be cool to test as new kind of infill.
- airstrike 8mo ago
  He didn't invent the pattern though

regularfry 8mo ago

So initially my thought was "why would this be better than existing infill patterns" but my second thought was that the reason Miura-ori patterns are interesting in the first place is because they fold. Not in this application so much, but in general, the way they flex is why they're interesting. The upshot here is that if you embedded that sort of pattern in a closed box, the degrees of freedom would try to transfer the force of a vertical load on the top to a horizontal stress in the outer shell of the base, in both x and y. A bit like a spherical dome. I'm not sure that it's better than a dome; it might be for cases where you can't predict where on the top surface the load is going to be? I'm also not sure that a sheet of printed infill is sufficiently similar in its physical properties to a sheet of paper/card for this to transfer well, but it would be an interesting experiment to do.