And once the flushing volumes are set properly to avoid material pollution, there is no more adhesion issue within the print. Indeed I just bump a bit the flushing volumes before it goes to the purge tower... And it is a success, with a near perfect print...
![Image](https://i.imgur.com/aqnYcSu.jpg)
![Image](https://i.imgur.com/WAhOlrR.jpg)
![Image](https://i.imgur.com/YzfEyNJ.jpg)
And it would work as well with PETG as support interface for PLA. That being said, I did not succeed to do the same with part where most of the surface lies on a PLA surface (exemple the Shogun battery door), as it warps due to the difference of material temperature: this for sure requires more work.