>>Hi Paul, I cooked up a converter for you, you can download it from here:
>>http://moi3d.com/download/3dmCurves2DXF.zip
>>
>>Unzip this to some folder, then run the 3dmCurves2DXF.exe program.
>>
>>It will ask you for the name of an input .3dm file, and then the name of an output .dxf file.
>>
>>It will read through the input .3dm file and convert any curve objects it finds to Spline entities in the DXF file.
>>
>>Please let me know if this works to transfer your curve data over.
>>
>>- Michael

I know this thread is almost 3 years old, but when something works you have to give credit. This works perfectly! I drew an object using simple lines in the "TOP" view, and then converted the 3DM to a DXF file. That file will now be used to laser cut gaskets in .010" copper.

Brilliant!

Thanks,

Chris