Alternatively you could look at FreeCad. It is free, also for commercial use and has STEP export.
I made a (simplified) 3D model of a common mode choke with it:
Looking at the ease at which Robert made his housing using a STEP file from the board... Well, it would take (me) more time to do so in FreeCad.
Simple fact, I do not like the licensing option of Fusion 360 (you kind of rent it).
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