Post your dxf and I’ll show you exactly how to do it with your own file. Or post your f3d file from Fusion.
If you don’t know how to export and post your f3d file from Fusion follow this link.
In the meantime you could take a look at this generic video I made about single line geometry in fusion. It’s a little dated and I have a slightly different way of doing it now but the information still mostly relevant.