"Max volumentric speed" setting

[mager33]

Does anyone use this setting?
Which value?
I have troubles ramping up the speed over 60mm (underextrusion, surfaces do not close properly).

Next thing is that rectangular corners show some overshoot with higher print speeds - I thing about tuning down acceleration setting.
Aby hints anyone?

[Admin]

Never heard about that, do you have more information?

Matthieu

[mager33]

The idea is to keep filament pressure at the nozzle constant thus having a constant flow of plastics. Changing the flow of plastics is rather slow (that causes oozing, stringing), but changing motion speed is quick, so it makes sense to adjust speed of motion according to a the volumen of extruded plastic ("volumetric speed") - and not vice versa.

[MiR]

This thread gives some helpful information, the good stuff is close to the end of the thread:

forums.reprap.org/read.php?1,169335,172632

Not so good:

blog.lincomatic.com/?p=773