I am relatively new to this field. Currently, I am using Cura to slice my stl. file and that is a really simple flat square. But for some reason, it ignores the infill setting change and it only shows lines pattern regardless of what I select. This worries me more as it might not change other settings such as speed either. There is no way to find this out until I physically try printing but I don’t have enough materials for test prints and I cannot reuse the printed material. Any suggestion that how I can solve this problem is highly appreciated.