DXF/DWG import

[RWSD]

I'm using the panelling tools in Rhino to generate patterns of shapes to be cut from flat plates by laser. Rhino can convert its NURBS curves to lines or arcs [arcs in this case] to a degree which can be finely tuned. Then one can export the pattern as arcs using dxf. [Vectorworks can import Rhino 3DM files, but these are 3d only].

Sometimes Vectorworks imports these patterns as arcs quite happily, but sometimes, for no obvious reason, it insists on importing them as polylines, which if one decomposes them, consist of hundreds of tiny lines; this is not what a laser profiler wants. Neither can they be used to clip from shapes in Vectorworks, then extruded, so I can use them in a Vectorworks model [or not without locking up the Mac].

I know that the Rhino dxf/dwg export is fine, as I have other software which opens these files natively, and they come in correctly as arcs.

I've been using Vectorworks to output dxf/dwg to profilers for years without problems, however the import of these files has often been ropey.

Any ideas?

 

[RWSD]

Jim?