Single line stencil font

I am modeling in SolidWorks and saving in a drawing as a DXF. I then  take the DXF into TurboNest cam software to create my cnc file.  Problem  is, the old version of TurboNest I am running freaks out with splines.
I need an "octin" type font that is just lines (no splines or arcs) and  it also has to be stencil so I don't lose the center of closed loops. 
Does anyone have a single line stencil font that is of the "octin" type?
I need help FAST!!!!!

SolidworksGeneral