Hello all â so apparently Iâm not alone. I have the exact same problems as mentioned above.
The heatbed starts severely buckling up in the middle when heated up. After I properly levelled the bed at room temperature and start a print in ABS, the nozzle will deposit filament to the left and right, but not in the middle section of the heated bed (extruder âclicksâ, i.e. canât extrude filament because itâs too close to the bed) . At the second and third layer (0.2mm steps) it gets better.
This is noticable but managable at around 60 °C, pretty bad at 90-100 °C. I quickly found that the printer wasnât (and isnât) really usable without printing a raft EVERY time. At least for me and for anything a bit larger than a small figurine.
The last time it was so bad that I wasnât able to remove the print completely without damaging the print surface (photo). Iâm right now using this opportunity to clean the heated bed and will try putting an aluminum or glass plate on top. Hope this will solve the problem.
However @Dobot/@Support000 I donât think this should be necessary in the first place. Any recommendations?