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Hi everyone!

I recently assembled my first ever delta printer at home: a Kossel Mini (Anycubic). Assembly took really long but I finally managed it. After a few test runs and glitches, I was able to get a small prints (those with a small radius) done on it fine.

The problem is that when a print is too wide (bigger radius or closer to the edges of the build plate), the printer does something really weird: it goes too low from a certain edge and lifts up almost 2-3 inches off the built plate subsequently (I’ve posted a video of this here - Kossel Issue - YouTube - since I might not be able to explain it best in words). It tries to go out of the bounds of the printer as well it seems. Then the stepper motors make a harsh clucking sound (because the motor tries to push it away from the center but there is nowhere for the extruder to go).

I’m not sure if this is a leveling issue since another print I did which was smaller and just around the center of the built plate came our perfectly fine, and if it is I’m not sure how to fix the leveling since all the axes that I checked the leveling on, seem leveled. I leveled it to 0.27 using a gauge.

Any suggestions would be really helpful to either solve or diagnose the problem.

Thanks,
A