RRC[

Rat Rig Community [Unofficial]•3y ago•

6 replies

MARC

OVERTURE LW-PLA issues after seam.

Hi there. I am really struggling with this filament. I seem to struggle to extrude after retraction. But it's not all the time. I've attached a few photos which I hope lets you see the issue.

I'm trying to print the GasbONE rc plane from thingiverse. Outerwalls are 0.4mm with infill at 0.5mm.

Ratrig Vcore 3.1
Phaetus Rapido UHF
Bondtech 0.4 CHT

Settings:
ORCA Slicer
Acceleration capped at 5000
Speed capped at 60mm/s
Wall thickness 0.4. 1 Wall
Bottom/Top layer 3 layers
Retraction 1mm with 40mm/s retract and deretract speed (any faster and it strips the filament)
Z Hop is on
215c hot end temp. Hotter creates a lot of massive blobs.

Things I have tried

Recalibrating flow. My value is 0.98.
Recalibrating PA. My new value is 0.030 for this PLA, 0.042 for normal PLA
Retraction setup, I get very little stringing at 0.8mm, no stringing at 1mm.
Increasing flow from 0.98 to 1.2 (lines are thicker but still, struggles to flow after retract)
Printing slower with slower acceleration. Even at 1000 acceleration and 30mm/s speed, I still get the problem
Purchased a brand new nozzle, fitted new ptfe tube between my orbiter2.0 and rapido hotend
Printing as low as 205c creates bad layer adhesion
Printing above 215 creates random blobs which end up breaking the print when the nozzle hits it
Reducing my cooling fans from 15% speed (4028 delta fan) to 5%. Doesn't do much on the longer layer times, noticable difference on smaller details
Turning of cooling fans (creates bad corners on small detail)

The problem is so inconsistent. It doesn't happen at every retraction as you can see. I set my seams to be at the same corner. If I set my seams to be random, I get randon under extruded lines on the walls etc. The print it self has to be 1 wall. If I print an object with 2 walls, I don't get this on the outer walls, only the inner.

Any help would be appreciated. I'm pulling my hair out over this!
Thanks.