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 have to format the file at all, or does anyone know how to open it in SolidWorks? And after that, it would be important to know how to format it again for Ultimaker Cura. I hope you understand what I mean. Thanks for any help or suggestions. Regards.