Hi guys I am quite new to 3D printing. I am having this problem with the printhead rising too high during printing when it gets near to the beds' borders. It isn't a problem with smaller prints but it gets very frustrating with bigger ones. I am thinking I am doing something wrong with the calibration but don't know exactly what. I am not calibrating by hand rather using auto calibrate.

enter image description here

I am using Cura 15.04.03 as slicer.

  • $\begingroup$ That doesn't look like the printhead lifting but warping... $\endgroup$
    – Trish
    Oct 11, 2019 at 17:06
  • $\begingroup$ I could put a video of it doing it. On the the picture i also got the excess material off so maybe thats why it looks like warping. $\endgroup$
    – Emre Mutlu
    Oct 11, 2019 at 22:00
  • $\begingroup$ wait, you use cura (1.)15.04.03? You should seriously update to cura 4.X! $\endgroup$
    – Trish
    Oct 11, 2019 at 22:08

1 Answer 1


It is a common problem with "delta"-style circular parallel kinematics machines. It is called Bowling. It can lead to the presumed Z=0 plane having a bowl-like shape. The actual error shape can be more complex. The job of "bed-leveling" is to make the realized z=0 plane to be identical with the bed.

If you can, use a multi-point (like 40+ points) interpolation. It builds an error map, and adjusts every point based on that map.


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