Hi!
I am having a bad time with a really annoying problem:
Finally I am getting a nearly perfect first layer after disabling the part cooling fans and the heatbed (which warped the printbed) and using gluestick on the print surface. The nozzle height seems really good (Z0.785 on my printer) and the surface finish after releasing the print is fantastic.
BUT....
After the first layer the nozzle starts scrubbing through the already printed areas. It seems to get worse layer per layer. This gives a terrible sound and sometimes even offsets layers! Some prints even work and look really good (besides some "scars") but it's not consistent and the chance of failure is given all the time.
What I tried without success was...
- using the part cooling fans
- use higher temperature (using default 195°C)
- changing the z offset (lines are now separating)
- use identical settings for first and all other layers
- optimizing the extruder steps/mm (@Makertech: absolutely great trick, in my opinion a MUST in the build manual!)
- activating z-hop
Does someone have a solution for that? This would be awesome!
Thank you!!!
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.