Free Form Modeling Process Point based Curve based Sheet based Free Form Feature Create/Analysis/Edit Form Feature Operation Feature Sew/Thicken/Trim Body Extract Solid Sheet Note: Sew/Thicken Point based sheet is non parametric Curve_based sheet is parametric(Smart Sheet)100% Sheet_based sheet is most parametric Shanghai Jiao Tong University 8Shanghai Jiao Tong University 8 Free Form Modeling Process Point _ based Curve _based Sheet _ based Free Form Feature Create/Analysis/Edit Form Feature & Operation Feature Sew/Thicken/Trim Body Solid Sheet Extract Note: Sew/Thicken  Point _based sheet is non parametric  Curve _based sheet is parametric (Smart Sheet) 100%  Sheet _based sheet is most parametric