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
- 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:
- 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
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.