You have maybe more speedy! :)
Save your fusion file in format Step or IGES
Reload it in Moi3D! :)
if your file was in the free Onshape online the format 3Dm will be more easy for import export with Moi3D! :)
Else another method ! :)
Screw (Twist)
Then Flow as Phiro said (and give any form you want ! ;)

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