How can I edit and slice a .3mf file in Cura so that I can print it?

Hello everyone, I'm currently designing a small pendant, which I now have in .3mf format using the program 3D Builder. I'd like to make a linear cut in it using SolidWorks, for example. However, I can't format the file enough to edit it there. Does anyone know if there are other programs where I don't…