I guess you are familiar with Fusion 360 and you know that you have to use the included sketches in the file to make solid bodies?
When you have done that right click on the body you want to export in the component list and choose save as STL.
Check the "send to 3d utility" and select MeshMixer from the drop down menu.
A new window with MeshMixer will open.
Select file - export and save as an STL file.
Then you can open the STL file in your favorite slicer program etc Cura to be able to create the G-code file needed for the 3D printer.
