Overextruding
I've a Micro Delta Rework and I'm trying to calibrate the extruder, so I cut the filament in the end of the bowden tube and send 100mm out, when measured it has 104mm.
My prints are nice but not good with 7mm distance and 70mm/s of speed retraction (CuraEngine / Repetier Host).
Is this normal ?
If not, how can I solve this ?
Many thanks in advance.
My prints are nice but not good with 7mm distance and 70mm/s of speed retraction (CuraEngine / Repetier Host).
Is this normal ?
If not, how can I solve this ?
Many thanks in advance.
Comments
My big delta also has 7mm retract and works fairly good. But 7mm retraction can have bad effect on filament if you go through it several times with big forces. Also bowden is a bit sluggish on the reaction on hotend side since the bowden is just a big spring, which is also why you need much bigger retracts then on direct drives.
What controler board does the printer use?
Send M115 to the printer and see if it reports what firmware it uses (manual control tab in host)
G-Code : M115 (SEND)
the board is eMotronic
Smoothieboard : Uberclock, LLC (http://uberclock.com)
Also note that for some materials you need still a flow multiplier of down to something like 0.85 depending on the material as they can expand. But it is still good to have extruder calibrated to always start from defined condition.
Everething is there, ufffffffffff.
My problem was that, start from the beginning where 100 is 100 and then go further down the road.
About the flowrate I've tested 1 by 1 (increasing/decreasing) and was too mutch or too little,
## Extruder module configuration
extruder.hotend.steps_per_mm 163 # Steps per mm for extruder stepper
from
M92 E163.0000 P57988
to
M92 E156.0000 P57988
sorry my bad ...
That I changed to
";E Steps per mm:M92 E150.0000 P57988" and the prints caught the previous settings (retraction speed and distance , etc) and came out amazing (delta style).
The file (config-override):
Thanks for your help and keep the good work.