First-layer calibration unrealistic - how to save per-sheet adjustment via sliced print?
I noticed some under-extrusion (gaps between lines) one one of my top surfaces. So, I followed the advice in the Prusa article about this problem:
- did a cold pull
- checked/cleaned the extruder gears & tension
- re-ran z-axis calibration
- however, contrary to the instructions, it doesn't prompt me to put the bed sheet on... it seems to skip the first step mentioned in the instructions - so I just did it with the smooth sheet on the bed
I think I'm doing ok so far with the smooth sheet. I switched to the textured sheet and did the built-in first-layer calibration and got a result I'm very happy with.
However, when I actually do a print, it is dramatically under-extruded. There are gaps between lines and between the infill and the walls.
This leads me to believe that the extrusion of the built-in first-layer calibration is much different from the extrusion done by the slicer, despite me setting the correct nozzle size on the printer.
Therefore, I want to try calibrating the first layer with a sliced part. However, it's unclear to me whether or how I can adjust the saved z-offset for the textured sheet during the print... Is that possible? Or do I need to like, use live z-tuning during a print, keep track of the change, and then apply that change by running another first-layer calibration? That workflow would be rather annoying... if I cancel the first-layer calibration halfway through, would my adjustments be lost?
Thanks!