Best posts made by pjl

Come on, its really interesting. I want part 2

This is what Im talking about
https://duet3d.com/blog/duet3d-research-extrusion-behaviour-and-pressure-advance

@adamfilip You could also try pushing the extruder motor current a wee bit higher, see if that helps. I would try to set the extrusion steps per mm for the extrusion speed you will be using the most. Who cares about 1mm/s and stuff, you wont print with that flow without a tiny tiny nozzle.

But the reality of the situation is such, that there will always be slip, you won't get perfect calibration. Even with the non-linear extrusion, the best you get is dependent on the model (tricky business), but its still open-loop control. Until proper closed loop extrusion control becomes mainstream, we are riding blind.