Extruder best at extruding?
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I havent been keeping up over the last several years so what direct drive extrusion design, extruder and hot end, is regarded as producing the most accurate extrusion with the least amount of artifacts?
Looking around it appears HeVort from MirageC (I think and based on another design?), Prusa planetary, Bambu Labs or Bondtech have all created designs that fix issues. Back in the mid to late 20 teens E3d was the bomb. I'm sure they have a formitable offering. Any indication of one that stands above the rest?
Opinions welcome. -
@3DPMicro I'm in the same boat, not knowing what's out there.
IMHO all these geared extruders have the same issue: motor cogging and gear ratio sum up to an uneven torque curve. That's partly because of straight-cut gears, but also the gear ratio can amplify motor cogging into a regular pattern. Using prime numbers for gears would eliminate this.IMHO (biased) the screw extruder is one of a kind, because it doesn't use gears and the steps/mm are so huge, you can use very small and light motors.
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@o_lampe ahh yes. I remember the screw extruder from way back on the reprap forums when everyone was trying to figure stuff out. Do you remember where that thread was? Couldn't find it in a search
Edit- I see there's a rolling screw extruder out there. The one I was thinking about on the reprap forums actually drove the screws which did create a twisting force on the filament but this is coming from a 10 + yo memory so im really not sure.
Don't know if you've seen this guys videos. He's moved on to other things but he has some pretty good technical content from a couple years ago
https://youtube.com/@miragec?si=PSx9g8ZJtHsAzLb3 -
@3DPMicro There's this recent thread that covers the same ground: https://forum.duet3d.com/topic/36820/recommend-an-extruder-hotend
Ian
