• FuglyDuck@lemmy.worldEnglish
    201·
    7 months ago

    Not to be a stickler, but a dove tail is a sliding joint- the dovetail itself is a trapezoidal section with the narrow side facing the part it’s on.

    The slot is similarly cut so it slides into place.

    This is (basically) a fat biscuit join, which is good. Peg designs might be better - prefer pyramidal pegs, they self center and have more surface area for glue, and they print neater when they have suboptimal orientation to the print bed.

    • GreyEyedGhost@lemmy.caEnglish
      10·
      7 months ago

      And this is, in fact, a dovetail. It slides into place. He just happened to do it on a curve. He shows it in motion at 4:00.

    • Milta@lemmy.worldEnglish
      1·
      7 months ago

      These all do slide together if I am not mistaken. They are just what I would call non traditional shapes… Though I watched the video a few days ago and maybe forgot something.

  • mipadaitu@lemmy.worldEnglish
    18·
    7 months ago

    Skeptical of this, while the dovetail is a good joint in woodworking, it’s not really the best joint for most applications. Even drawer boxes.
    Modern glues are so good, that just a normal box joint or even a rabbit joint is actually stronger when properly made.

    While you can control the layer lines and orientation to some degree, I’m thinking that a dovetail, in real designs, would be extremely hard to implement. Peg and hole with CA glue is most likely better when splitting parts that are too big for a bed.

    • Obinice@lemmy.worldEnglish
      10·
      7 months ago

      a normal box joint or even a rabbit joint is actually stronger

      For anyone confused I looked it up, a rabbet joint is what they call a rebate joint in the USA. Learn something new every day! :-D

    • SzethFriendOfNimi@lemmy.worldOPEnglish
      3·
      7 months ago

      I was wondering about that. Considering with ABS a little acetone makes a stronger overall part.

      I was thinking maybe the dovetail would be good in that situation for strength but maybe something like a biscuit or peg and hole as mentioned is better?

      • mipadaitu@lemmy.worldEnglish
        6·
        7 months ago

        I think the video is better as a way to show some design techniques, than as a demonstration of dovetails as a connector.

        That being said, if you didn’t need a permanent connection, it does seem like a decent way to make something that can come apart easily. Wondering how strong it would be after multiple assembles and disassembles.

        • nilloc@discuss.tchncs.deEnglish
          2·
          7 months ago

          I’ve done some dovetails for a puzzle design before. They were meant to assemble and disassemble in multiple orientations.

          Depending on the layer line directions the problem I had was getting the fit tight enough to not fall apart, but not too tight to remove. I abandoned it because the PLA absorbed water and they became stuck after sitting in humidity for a few days.

    • Imgonnatrythis@sh.itjust.worksEnglish
      2·
      7 months ago

      Yeah, I like the ease and customization of peg and hole and have used this as my go to. I do like printing with wood filament though, and I guess a dovetail joint for a multi piece print would help with the illusion if I was going for that.