What volumetric flow, or mm/s filament rate do you use?
Posted: Sat Aug 28, 2021 4:54 am
Fellow printers,
I’m having problems with the extruder steppers “clicking” during a print. The filament is set up so there is practically no friction coming off the spool. I’m using PLA at 215 degrees. Both extruders seem to click about the same amount. I’m worried that the extruder can’t heat the filament enough to maintain what I would consider a “normal” rate. If I print at a higher temp it helps somewhat. If I print at 50% speed the clicking goes away. Printing at 100% speed has a volumetric flow of 8 mm^3/s during the infill, and this is where the clicking occurs. This would suggest that any volumetric flow above 4 is too much for the heating capacity. I have a Prusa MK3s printer which runs fine with a volumetric flow of 11.
I’ve done “cold pulls” with nylon filament so I’m pretty sure the nozzle and filament path is clean and without blockage.
What amount of volumetric flow do others use (mm^3/s)? Do you know the maximum sustainable feed rate of PLA filament (mm/s) for the I3 pro C extruders?
I’m having problems with the extruder steppers “clicking” during a print. The filament is set up so there is practically no friction coming off the spool. I’m using PLA at 215 degrees. Both extruders seem to click about the same amount. I’m worried that the extruder can’t heat the filament enough to maintain what I would consider a “normal” rate. If I print at a higher temp it helps somewhat. If I print at 50% speed the clicking goes away. Printing at 100% speed has a volumetric flow of 8 mm^3/s during the infill, and this is where the clicking occurs. This would suggest that any volumetric flow above 4 is too much for the heating capacity. I have a Prusa MK3s printer which runs fine with a volumetric flow of 11.
I’ve done “cold pulls” with nylon filament so I’m pretty sure the nozzle and filament path is clean and without blockage.
What amount of volumetric flow do others use (mm^3/s)? Do you know the maximum sustainable feed rate of PLA filament (mm/s) for the I3 pro C extruders?