How to save as a f3D file

[murray_bunnell]

I'm using educational fusion 360 and trying to save as a f3D file in order to send it to Titans of CNC. When I go to export - that type of file extension isn't there. I have f3Z, 3mf, ipt but no .f3D. Any help would be appreciated.

[Warmingup1953]

Does your design file have inserted Components from another Fusion 360 design?