Does anyone know how the Bed Leveling data is stored/used? Does it just use the last leveling data it took if you choose to skip leveling, until you do another level? How about if you cancel a print, after it did it’s bed leveling, but before the print actually started?
I had a practice of leveling only for the first print after turning on the printer, which caused no problems. Large first layers were still perfect.
After a while I started to skip all the leveling. Still no difference in the prints, so either the levelling data is saved, or it really does not matter. My last bed levelling was probably in June.
If you swap build plates, and nozzles or have something heavy on the build plate, run the levelling again.
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I also level if I move my printer to another surface, rotate it on my desk, clean the build plate, etc. Not sure it’s necessary, but feels like any small change should result in a relevel.
Kind of wonder if temperature swings should result in a relevel…
It does remember the bed level data. If you tell it to re-level and it already has (since the last power cycle, I think. I don’t think it preserves the data across power cycles - but I could be wrong, just guessing), it checks the 4 corners and center (5 points) and if it likes what it sees, it doesn’t do the full bed leveling procedure.
But every time you remove and reinstall the build plate, the bed level changes slightly. The bed heats up and cools down, the bed level changes slightly. So it’s rare that it does the “short” bed level successfully and doesn’t do the full procedure. At least, in my experience. But I have seen it happen a few times where it gets through all 5 points successfully and doesn’t do anything more.
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