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Replace your bowden tubes occasionally. (files.catbox.moe)
submitted 2 years ago by to c/3dprinting@lemmy.world
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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.

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[–] 3 points 2 years ago (4 children)

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 shit.

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  • [–] 0 points 2 years ago* (1 child)

    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

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  • [–] 2 points 2 years 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.

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