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Thread: In COVID Quarantine : What to do ?

  1. #46
    Serial Murcerer ZokesPro's Avatar
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    Wow, you've made tons of cool stuff. I can't make much out of metal, I'm very restricted on space. I haven't made a true bow yet, or at least nothing without cheap elastics. I might look into it when my son gets older, that's something I miss doing. I think my dad still has my bow laying around.

    So you made a bat'leh? Tell me more! That would be a very cool martial arts weapon, there are lots of techniques from many different weapons I can use with a bat'leh. What did you make yours out of? Beautiful damascus steel? Sublime titanium? Real Vibranium? Boring refrigerator box cardboard covered if aluminium tape with hockey tape around the handles? (that's probably how MY prototype would look at least)

    Dilliante: Can you 3D print stuff out of titanium? Like a pair of sai, or a bat'leh? You can't keep an edge but god dammit I love that metal for some reason. If I had a titanium 3D printer, I'd 3d print all my rc parts for my RC8.2e, I'd make my own skateboard trucks, utensils, chopsticks, door handles, railings, many watches and necklace, earrings...no wait, she already has a pair. ; )
    This is the way.

  2. #47
    Moderator VJ's Avatar
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    At work we have a metal 3D printer, but they are in an entirely different league. They use laser-sintering ( https://www.youtube.com/watch?v=yiUUZxp7bLQ ): the source material is powder, this is spread over a surface and then a laser goes over what is to be printed, the whole bed lowers (one layer height), power is added, leveled and the process repeats.
    The source material is ridiculously expensive (look at thousands of dollars per kg, depending on which metal you want).

    There is a Belgian brand of glasses that sells 3D printed titanium glasses: https://hoet.be/en/couture-brillen/impressie-collectie .
    pixar
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  3. #48
    Moderator Dr Mordrid's Avatar
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    SpaceX uses both laser sintering and electron beam melting, with alloys from titanium blends to a custom Inconel superalloy for the SuperDraco launch abort engines. They can even vary metal characteristics from one region of a part to another.

    Amazing tech.
    Dr. Mordrid
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  4. #49
    Serial Murcerer ZokesPro's Avatar
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    Quote Originally Posted by VJ View Post
    At work we have a metal 3D printer, but they are in an entirely different league. They use laser-sintering ( https://www.youtube.com/watch?v=yiUUZxp7bLQ ): the source material is powder, this is spread over a surface and then a laser goes over what is to be printed, the whole bed lowers (one layer height), power is added, leveled and the process repeats.
    The source material is ridiculously expensive (look at thousands of dollars per kg, depending on which metal you want).

    There is a Belgian brand of glasses that sells 3D printed titanium glasses: https://hoet.be/en/couture-brillen/impressie-collectie .
    My current glasses are broken, can't be fixed. A nice pair of titanium ones would do the trick.à


    Quote Originally Posted by Dr Mordrid View Post
    SpaceX uses both laser sintering and electron beam melting, with alloys from titanium blends to a custom Inconel superalloy for the SuperDraco launch abort engines. They can even vary metal characteristics from one region of a part to another.

    Amazing tech.
    Never heard of, interesting!
    This is the way.

  5. #50
    Moderator Dr Mordrid's Avatar
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    Quote Originally Posted by ZokesPro View Post
    My current glasses are broken, can't be fixed. A nice pair of titanium ones would do the trick.à

    Never heard of, interesting!
    About 35-40% of the Raptor engine is printed; multi-staged turbopumps, injectors, valves, preburners, etc. with much of the rest using explosive hydroforming; chambers (inner & outer walls), actively cooled nozzle, etc. Propriatory alloys.

    Last edited by Dr Mordrid; 11th May 2020 at 00:16.
    Dr. Mordrid
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  6. #51
    Serial Murcerer ZokesPro's Avatar
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    It seems easier to print something then to machine it, especially if the alloy is hard to work with to begin with.

    But nothing beats a hand forged items. You can make an item perfectly using a 3D printer fine. But it's way more satisfying making something with your hands.
    Last edited by ZokesPro; 11th May 2020 at 10:12.
    This is the way.

  7. #52
    Moderator Dr Mordrid's Avatar
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    Quote Originally Posted by ZokesPro View Post
    It seems easier to print something then to machine it, especially if the alloy is hard to work with to begin with.
    Inconel alloys do a good job of destroying tools.

    But nothing beats a hand forged items. You can make an item perfectly using a 3D printer fine. But it's way more satisfying making something with your hands.
    Yeah, my father and I hammered a bunch of iron on our farm. Even thermite welded a cracked tractor engine block.
    Dr. Mordrid
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    An elephant is a mouse built to government specifications.

    I carry a gun because I can't throw a rock 1,250 fps

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