A quick note. This is not about the auto leveling. That seems largely ok, or at least within margin of error.
This is a question on using the card on the final point of the autoleveling process. I find I cannot for the life of me pick the correct point. I lower the nozzle to the card, feel some tension, lower some more, the card creases. Then just to be sure, I raise and lower the nozzle by the same amount again, card doesn’t crease.
When I got to a point I was happy with, card creasing and decent tension, I ran a print, and found it was over extruding (seeing squishing), So I’d increase the z-offset.
Next time I ran the calibration again, took the nozzle down to what felt like the same amount of tension. Taking the z offset from the previous time in to account, I raised it by the same amount, set and go. Result: under extruding, poor adhesion, and poor fill.
At the moment I have to essentially babysit the first layer, adjusting the z-offset until the layer seems smooth with decent fill, then let it finish. What I’d really like to do is have a way to apply that z-offset to the saved calibration, but I’m not sure how.
Side note: I am currently doing a print that has a lot of travel across the layer which is leaving track marks. It appears there is no Z-retraction on travel commands, or it is not enough, or I’m still over extruding? OR is it related to the calibration?