I’m printing TPU with .8 mm nozzle and having troubles with the first layer. There are gaps between the layer lines and it looks pretty bumpy.
I’m printing with .3 mm layer height and my print speeds are at 20 mm/s.
Any idea what I could do to improve the first layer?
If you can already hear it during normal printing, then yes, it’s most likely wet filament. The water trapped inside almost instantly turns into steam inside the nozzle and expands, causing the molten filament to bubble up as the steam escapes.