after you finish the step 12 or 14, you can extract the curves from solid body.just follow the step as below: - _7 x$ ~4 F3 ~: b; {1: make new layer for new curve.% {1 @. z* J1 l0 ]# r( @/ `
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. e1 |- n4 h$ I0 q; L3. make the solid layer invisible but the new layer of new curve selectable or work. * B* `" y1 T2 J2 } Q4. that's all.