Possible causes of print defects? I'd like some advice regarding defects on my print :




Here some details :


Printer CR-10 S, nozzle 0.4
Material PLA
Bed 60, Hotend 215, 50 mm/s speed
SLiced with cura 4.1, 5 walls (i can provide more detail of the profile if needed)
Layer height 0.1
modeled on fusion 360
The surface where the defect sits is actually tilted 45 degres


Thanks !
There are many possible causes for printing defects, but the easiest one to eliminate is dirt. Always use a filament cleaner to prevent dirt from entering the extruder. There are plenty of designs available on Thingiverse. Always keep your nozzle clean. After pre-heating mine, I clean it (carefully) with a folded paper kitchen towel. It may also be worthwhile doing a "cold pull", if you suspect that you have dirt in your nozzle. Finally, you should check that filament is not leaking out between the nozzle and the heater block.