Try adding $fn = 30 to your rotate_extrude. You can increase the number to better approximate a smooth curve, but OpenSCAD only deals in objects made of flat faces, so it will never be perfectly round.
On Saturday, March 23, 2013 at 6:47 PM, Rob Duarte wrote:
I'm trying to import a DXF file and rotate it. I'd expect it to look like a
curvilinear, vase-like form but it's not. It appears that import('file.dxf')
assumes an extrusion height.
ie: import("eps.dxf") already appears with a height of 1. Adding height=2 to
the import function doesn't change anything.
The problem is obvious in the attached screenshot - it's not rotating a plane,
but an extruded plane. So I end up with a 7-sided form instead of a continuously