For months, my printer has been phenomenal. No issues whatsoever.
I decided to jump into dual color printing which has been the bane of my existence for a week now. I received my Dual head last Friday, set it up, everything went smooth. The calibration squares took a while to set up properly, but I am actually blaming myself on this.
With that done, I ran the test lulzbot keychain. I was not impressed with the results. Rechecked the nozzle heights, made some adjustments. For giggles, reran the calibration squares and made finer adjustments.
The results were a bit better on the keychain.
My bottom layers were dead on smooth, like polished smooth so I adjusted my Z offset on the printer to account for what I factored in to be about .2mm off. Bottom layers are better, but still inconsistent. See screenshot and notice that as it moves up, the layer thickens. I have been running some single color prints for calibration purposes.
Before Z calibration:
After Z adjustment: Notice how it gets thicker from top to bottom.
Using a raft:
Furthermore, anyone with a dual head have the damn thing warm up with nozzle 2 off the bed only to spit out what looks like 300mm of filament allover the desk?