I’m trying to do something that feels like it should be simple, but I’m struggling to find a way. I have an stl file that has spots for two items and I wanted to reconfigure it to only have one spot. I just want to cut and merge but this seems impossible. Any suggestion on tool and how to do this?


Try blender. YouTube tutorial.
I’ve tried Blender and continue to try to learn but it has an insane learning curve. Imo, it’s only useful for artistic work.