You are right ! I did a second try, with a different preset “0.08 High Quality”. It also failed.

The timelaps show the hotend hitting the model base. ( see this streamable ) It’s the first time it happens, I don’t know what to do to fix it 🤔

I use factory preset “0.2mm standard” for a 0.4mm hotend. The purge line looks normal to me. I had an other comment with bambustudio and freecad files.

For records, this is the model in Freecad and how it is sliced in BambuStudio

I’m not the author, but it’s nice to read from other editors that are not emacs or (n)vim. And we don’t read that much about Kate.