1. Make sure that your shapes are closed curves in Rhino. The simplest way is to Dupborder your unfolded, flat surfaces.
2. Move your closed curve unfold to 0,0.
3. Export to Illustrator, scale 1:1
4. In Illustrator, open your file, select all the shapes, then go to Object > Artboard > Fit to Selected Art.
5. Convert units to mm.
3. Import to CLO