About this 3D model

I finally figured out how to import DXF files into Blender properly, (ie: with curves and such) so I tweaked this design to be a bit nicer. I also decreased the angle from 45 to 40 so it is more lenient. DXF import howto: http://wiki.blender.org/index.php/Extensions:Py/Scripts/Manual/Import/DXF-3D