after you finish the step 12 or 14, you can extract the curves from solid body.just follow the step as below:! O) g i q' f: c# s
1: make new layer for new curve.1 L% f$ ~0 s5 |8 B
2: under modeling, choose Insert--Curve from Bodies---Extract---Edge Curves---All in Face, then select the face of solid bo dy,---ok---0k---Cancel, leave the Extract curve dialoge.6 u8 t: |8 g' K- l9 }& X- c
3. make the solid layer invisible but the new layer of new curve selectable or work. 7 E& w5 \2 i+ N: R2 }4. that's all.