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Potapich
Is MBL or UBL works for first layer only? Or how its work while printing?
Mesh and UBL work differently. In the MBL the correction for each Mesh point is applied throughout the entire print. In the UBL System, you can specify how long until there is no correction. It is done with the G29 Fx.xx parameter. The correction will be the greatest on the first layer. But the correction will fade away over the specified distance (or Z-Height). The Fade Height defaults to 10.0 mm but can be specified at what ever height makes sense for the user's print.