1. Rhinoceros Surface Modelling

2. Template preparation Rotate and skew to orientate datum Crop to edge of profile Calibrate height and width proportion Enhance image contrast

7. Placing Template Draw a bound-box for reference Place the template drawing as background bitmap Scale the bitmap to the bound-box

12. Tracing Profile Divide the profile into sections Trace the curves Use as few control points as possible Ignore small radius corners

18. Matching Curve End-points Draw straight lines to denote curve ends

21. Extruding Surfaces Extrude the profile curves to form primary surfaces

24. Generating Intersection Curves Generate intersection curves Examine if the curves behave similar with physical model

28. Trimming Surfaces

32. Adjusting Intersection Curves Remove Kinks on the curves before using them as generator Mark the break points with points Trim the curves Add the transition curve segment Joint the curves

33. Tips Always draw half of the model unless the form has no symmetry Use the XYZ datum planes to store 2D profiles Use the other side of the space to store 3D master profiles

36. Adding Free-hand Curves Draw a 2-point curve between profiles Change it from deg. 1 to deg. 3 Add control points Adjust control point positions in one view Adjust control point position in other views Check curve dynamism by rotating the model