Does any of you have any experience with this? I’m looking at the Felfil Evo pellet extruder which seems like an acceptable option. One thing I don’t understand. Why are the shredder and spooler so ungodly expensive?

I mean, can’t you just use an old blender to grind pieces down far enough for the pellet extruder? The finer the better no? Airborne microplastic may be a concern at some point.

Also the spooler. Is that more complicated than a stepper motor that runs at a certain RPM spinning the spool around? With perhaps a mechanism that slows down a bit after X rotations to compensate for the spool getting thicker. Nothing an Arduino can’t handle. Also don’t grip the spool that tightly so pull strength is more or less equal.

Both the spooler and shredder individually cost more than a pellet extruder does…

  • GrayBackgroundMusicMEnglish
    8·
    1 year ago

    I mean, can’t you just use an old blender to grind pieces down far enough for the pellet extruder?

    Whenever you do anything at an industrial level, you want things to be just right and repeatable. Too large of a shred and parts won’t fit thru the openings in the extruder. Too small and they might get into places they’re not supposed to. I’m sure there are other failure mechanisms I don’t even know. Regardles, you want the particles in the right size range for the extruder.

    The spooler? I’m not sure about that one. That doesn’t make sense to me. The Recreator (http://recreator3d.com/) project makes the entire slice/heater/spooler out of an Ender 3 and some printed parts. Depends on what you’re spooling. It’s probably more expensive than the Recreator, but I’m still intrigued. The filastruder setup that CNC kitchen demonstrated had a laser sensor with integrated feedback loop, so I guess it’s more. https://youtu.be/vqWwUx8l_Io?si=cyNdJD10U1tUrrTt