Hi creating some files which will be used manufacture parts on a CNC Punch. The punch software reads the circle size imformation to punch the correct hole and position on the part. I used an illustrator effect to create the hole positions which I imported into rhino. If your turn control points on for the geometry you can see they come as splines rather than circles - if I use the convert to arc command some convert perfectly while others convert randomly and this varies even according to size.
If someone could offer any advice would be great.
ARC Conversion.3dm (2.9 MB)