Was having clogging issues so I thought I’d replace and get the mythically good capricorn tubes. This is a good sign that I needed to.

  • nublug@lemmy.blahaj.zone
    link
    fedilink
    English
    arrow-up
    14
    ·
    4 months ago

    and even if it were worn down that much it wouldn’t cause any problem as the entire tube is made of the same slippery stuff, it’s not a coating.

    • callcc@lemmy.world
      link
      fedilink
      English
      arrow-up
      2
      ·
      4 months ago

      Would a larger inner diameter not cause the transmission of movement to be less direct due to bending and coiling inside the tube? This is probably mostly an issue in bowden systems

      • kitnaht@lemmy.world
        link
        fedilink
        English
        arrow-up
        4
        arrow-down
        1
        ·
        4 months ago

        The hysteresis that the tubing imparts on the movement of filament is negligible at best. We’re talking fractions of a millimeter of difference; and it’s something that can be accounted for in your retraction quite easily. Remember that this hobby is LITTERED with people trying to sell you stuff. Be critical in your observations, because even most YouTube channels will tell you that [X] thing is GREAT because if they don’t, they stop getting free removed.

          • kitnaht@lemmy.world
            link
            fedilink
            English
            arrow-up
            1
            ·
            edit-2
            4 months ago

            The tubing diameter difference is only fractions of a mm, and now you’re talking about a 100mm length along. You don’t need to measure it, it’s literally in the dimensions and tolerance info of the product.

        • anivia@lemmy.ml
          link
          fedilink
          English
          arrow-up
          1
          arrow-down
          1
          ·
          edit-2
          4 months ago

          When it comes to pressure advance the difference between a bowden extruder and a direct extruder is more than tenfold. So no, it’s not “negligible at best”.

          If the difference was negligible no one would put the extruder on the toolhead where the weight has a big impact on maximum acceleration

          • kitnaht@lemmy.world
            link
            fedilink
            English
            arrow-up
            2
            ·
            edit-2
            4 months ago

            You don’t really use pressure advance in bowden systems because the bowden system is flexible enough that it actually negates most of the advantages of pressure advance. As the pressure increases, the bowden tube itself stretches lengthwise. This has little or nothing to do with the interior bore of the PTFE tubing. The reason you are increasing it so much is because you’re overshooting due to the length of the tubing, not the internal diameter.

            We’re not comparing Bowden vs Non-Bowden here, regardless. We’re comparing generic PTFE bowden, to “Capricorn” bowden anyhow.

            So you’ve managed to argue the completely wrong thing to begin with, AND you were wrong on the thing you argued. Congrats.

      • nublug@lemmy.blahaj.zone
        link
        fedilink
        English
        arrow-up
        2
        ·
        4 months ago

        on a bowden system yes, but just ever so slightly. not any more than you could fix with retraction and other settings, and prolly only nylon and other flexible ones you should be doing in a direct dirve anyway would be affected.