Today I noticed some weird holes/deformities on the surface of this simple usb holder I printed. Since I'm fairly new to 3d printing I have no idea what may be the cause of this problem
My printer is a Ender 3 (Marlin 2.0.3) and I'm using Cura for slicing.
Pics:
It would be a great help if someone could give me some pointers on how to fix this.
