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What are ABL and UBL?
ABL stands for Automatic Bed Leveling
UBL stands for Unified Bed Leveling
Level the bed?
A level bed (twisting knobs under the bed), or a surface that is exactly followed by the nozzle is a prime requisite for 3D printing. Without a proper bed setup (not only level, but also the initial nozzle to bed surface gap; usually the paper ...
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