<p>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.</p>

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

CC BY-SA 4.0
2019-12-06T19:33:01.197Z
2019-12-06T19:33:01.197Z
cmm
<p>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.</p>

<p><img src="https://i.sstatic.net/XkVQ6.jpg" alt="enter image description here"></p>

<p>I am using Cura 15.04.03 as slicer.</p>

CC BY-SA 4.0
2019-10-11T17:06:50.423Z
That doesn't look like the printhead lifting but warping...
Trish
CC BY-SA 4.0
2019-10-11T22:00:05.417Z
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.
Emre Mutlu
CC BY-SA 4.0
2019-10-11T22:08:04.147Z
wait, you use cura (1.)15.04.03? You should seriously update to cura 4.X!
Trish
<print-quality><nozzle><kossel>
Anycubic Kossel Plus raises the Printhead around the corners of the bed too High if the print is too close to the corners
Emre Mutlu
# Anycubic Kossel Plus raises the Printhead around the corners of the bed too High if the print is too close to the corners

(Asked by: username_0 on 2019-10-11)

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](https://i.sstatic.net/XkVQ6.jpg)

I am using Cura 15.04.03 as slicer.

**Tags:** print-quality, nozzle, kossel
> **Comments:**
> **username_1**: That doesn't look like the printhead lifting but warping...  
> **username_0**: 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.  
> **username_1**: wait, you use cura (1.)15.04.03? You should seriously update to cura 4.X!  

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## 1 answers

### Answer by username_2 on 2019-12-06. Score: 2

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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