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V-Minion with probe location bias
Always had issues with bed adhesion on the left side, under-compensation from bed leveling. (nozzle too high) which I can get around with thicker first layers and some hairspray.
As it's gonna go the the local middle-school for a bit I wanted to see if I could find the cause. I read up and used the klipper AXIS_TWIST_COMPENSATION_CALIBRATE which indeed showed a little bias (-0.01, 0.025,-0.008) as I normally calculate z-offset in the middle I was ususally ~0.03 too high for the left side which for the finer stuff matters.
I imagine it as being a dip in the middle somehow.
The compensation fixes it mostly, should be ok for teacher/kids to work with.
Howeverrrr my obessisive brain wants to know the cause so
-Removed the X extrusion and checked on a piece of granite I believe to be flat-ish enough, tried some rulers and squares, seems straight (enough).
-The rails and carriage seem ok, the carriage has a little play. (cleaned and lubed it in the process).
-Probe (fancy temp compensated one from ratrig), reseated it (straight).
Any ideas? EVA2/Carriage/belt perhaps, dunno
As it's gonna go the the local middle-school for a bit I wanted to see if I could find the cause. I read up and used the klipper AXIS_TWIST_COMPENSATION_CALIBRATE which indeed showed a little bias (-0.01, 0.025,-0.008) as I normally calculate z-offset in the middle I was ususally ~0.03 too high for the left side which for the finer stuff matters.
I imagine it as being a dip in the middle somehow.
The compensation fixes it mostly, should be ok for teacher/kids to work with.
Howeverrrr my obessisive brain wants to know the cause so
-Removed the X extrusion and checked on a piece of granite I believe to be flat-ish enough, tried some rulers and squares, seems straight (enough).
-The rails and carriage seem ok, the carriage has a little play. (cleaned and lubed it in the process).
-Probe (fancy temp compensated one from ratrig), reseated it (straight).
Any ideas? EVA2/Carriage/belt perhaps, dunno
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