I'm trying to print lithophanes and having an issue with the nozzle moving through the previous layer and basically "drawing" through the print.
I've printed 3 lithophanes before with zero issues. Here are the settings for those: 0.4 mm nozzle
- PLA
- Temperatures
- nozzle temperature 210 °C
- bed 70 °C
- 0.12 mm layer height
- manual bed leveling
- 30 mm/s speed
- stock Ender 3 mainboard
Here's the settings for the prints I'm doing now with the 0.2 mm nozzle:
- PLA
- Temperatures
- nozzle 210 °C
- bed temp 70 ° C
- 0.12mm layer height
- BLTouch auto bed leveling
- 20 mm/s speed
- BigTreeTech mainboard
Here's what I've done and looked at to fix it:
- Calibrated extruder
- manual bed leveling, then ABL
- calibrated Z offset
- checked for flat spots on rollers, there are none
- tried including a Z hop with little success.
I've referenced the following articles without solving the problem. Nozzle rubs on previous layers
Ender 3 nozzle gets closer and closer to the previous layer as the print progresses
Below are the two lithophanes, the first one successful and the second the failure. I have tried going back to the 0.4 mm nozzle and the old settings but I'm getting the same failures. The biggest difference is the mainboard switch and adding the BLTouch. I don't have any issues with my other prints (more traditional 3D models) only lithophanes. Any help and ideas would be appreciated.
