When I export a 3dm file to dxf, I see results I don’t understand.
File j-outline.3dm is a planar outline–a curve containing 1 closed polycurve of 31 arcs. The arcs have a consistent direction (clockwise per command “Analyze Direction”.
File j-outline.dxf is an “Export (R12 Lines and Arcs)” of j-outline.3dm. When I open it with Rhino I see 31 curves, each an arc. So far so good. But the directions of the arcs vary (again per command “Analyze Direction”).
I don’t see a pattern to the direction changes. They confuse my cheap-o CAM program (LazyCAM).
Any pointers (besides “get a better CAM program”)?
MacBook Pro, Retina, Mid 2012
OS X 10.8.5 (12F45)
5.0 Wenatchee 2014-05-20 (514)