after you finish the step 12 or 14, you can extract the curves from solid body.just follow the step as below: / R# G- }) R& Y8 T2 K1: make new layer for new curve.+ k% E8 W0 G+ i2 F
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. + H6 O7 Z% p. _) W3. make the solid layer invisible but the new layer of new curve selectable or work. 3 F* {: B) `: U ?7 \6 }/ b4. that's all.