Export sculpt stl or obj to stp

Hello, is there a way or maybe someone that can export a fonctionnal .“step” file for CAD software from an obj sculpt made in nomad, i remeshed it with quadremesher in blender to help (maybe). I made a sculpt for a “night light diffuser” and the ceramic maker use only CAD program.
Thanks in advance for your help.

I will try installing freecad i found a youtube recipe from blender to freecad to help converting stl to stp