Bad bed leveling of a offset
Good day fellas. I keep having same issues woth all my rats vcore 4 500mm. Very difficult to get correct 1st layer. On small prints it seems fine. But larger area prints not sonwell. In any case print starts nice, zoffset correct but as time goes by I have to keep adjusting z offest to get decent first layer because nozzle goes too low. I do preheat 1.5-2hours. Over 2h seems almost solve that issue. Looks like x axis keeps deforming while printing or something. All printers enclosed and closed doors. Any ways to improve that? Just preheat?
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