I lubricated the lead screw, the Z axis guides and the screw top. Plus I set flow to 0.9. The first layer came out "okay". I hope it stays like that.
The lines were too thin though on the first layer, but it still prints.
Where can I find optimizing the extruder steps/mm in the guide?
Now I set up the excentric guides, the height of the probe, did the configuration via pronterface and it came out ok. But I printed the same model over and over again. I am curious if other models will print as good.
But the excentric guides on the Z axis are the weak point of this printer, if you ask me.