Bottom Layers Ruined, Melty, Etc

[Rinion 0]

Hello!

Using an Ulitmaker 2 and Cura, don't have much experience, but most of the prints are coming out very bad. One thing looks like its missing layers (or rather, not missing, just a lot of gaps and holes, sort of like a mesh).

The main thing i want to ask about is that the bottom layer sometimes comes out melted looking and very rough.

This is a pic of the bottom. There was some support structure too.

Help is appreciated

[stu_le_brew 42]

to give you any pointers there is a lot of information needed, all items effect print quality some below:- print speed, bed and print head temperature, layer height, fill density...... what materiel are you using (looks like PLA)

plus what supports are you using if any, looks like not much ?

The bottom layer is generally speaking the most important, to get good bad adesion, are you using any glue on the bed ?

have you updated to the latest firmware on the printer plus the latest version on Cura

S