Chapter 1 Surface Basics ......................................... 1-1
1.1 Definition of a Surface .................................................. 1-3
1.2 Construction Methods .................................................. 1-5
Curve Network ................................................................ 1-5
Slab ........................................................... 1-5
Hybrid........................................................ 1-6
1.3 Common Surface Terms............................................... 1-7
Quilt Surfaces.................................................................. 1-7
Curvature ........................................................................ 1-8
Curve & Surface Continuity............................................. 1-8
Inflection Point................................................................. 1-9
Tangency and Dihedral Angle......................................... 1-9
1.4 Using Quilts to Manipulate Solids ............................. 1-10



Chapter 2 Curve Network ............................................... 2-1
2.1 Datum Points .............................................. 2-3
2.2 Sketches and Datum Curves...................................... 2-10
Sketches ............................................................. 2-10
Thru Points.................................................................... 2-11
From File ............................................................ 2-14
Use Xsec............................................................. 2-15
From Equation............................................................... 2-15
Intersect ................................................................. 2-16
Copy.............................................................................. 2-16
Project ............................................................. 2-18
Wrap.................................................................... 2-19
Trim .................................................................... 2-20
Offset..................................................................... 2-20
Curve color.............................................................. 2-24
2.3 Curve Information and Analysis .............................. 2-25
Continuity ............................................................ 2-26
2.4 Sketching Splines and Conics................................... 2-28
Spline Dimensions ........................................................ 2-28
Splines and Tangency................................................... 2-29
Modifying Splines ........................................................ 2-30
Sketching Conics .......................................................... 2-32
Exercise 2a Simple Curve Network .................................... 2-34
Exercise 2b Curve Network with Splines........................... 2-45




Chapter 3 Creating Simple Surfaces.......................................... 3-1
3.1 Extruded Surfaces ........................................................ 3-3
3.2 Revolved Surfaces........................................................ 3-4
3.3 Blended Surfaces.......................................................... 3-5
Parallel .............................................................. 3-5
Rotational......................................................... 3-6
General ................................................................... 3-6
Attributes................................................................ 3-7
3.4 Filled Surfaces ..................................................... 3-8
3.5 Offset Surfaces ..................................................... 3-9
3.6 Copied Surfaces................................................. 3-10
3.7 Merging Surface Features......................................... 3-11
Exercise 3a Cut Using Solidify ........................................... 3-13
Exercise 3b Protrusion Using a Quilt ................................ 3-20



Chapter 4 Surface Operations and Analysis Tools................... 4-1
4.1 Surface Replacement ................................................... 4-3
4.2 Solidify ........................................................... 4-5
4.3 Thicken ............................................................. 4-7
4.4 Extending Surfaces ...................................................... 4-9
Extend along the original surface.................................... 4-9
Extend to the reference plane....................................... 4-13
4.5 Surface Trimming ....................................................... 4-14
Cut ................................................................. 4-14
Intersecting Quilt or Plane............................................. 4-15
Datum Curve................................................................. 4-15
Silhouette ........................................................... 4-16
Corner Fillets.......................................................... 4-16
4.6 Copying and Moving Surfaces .................................. 4-17
4.7 Surface Mirroring ........................................................ 4-19
4.8 Flipping Surface Normals .......................................... 4-20
4.9 Analysis Tools............................................................. 4-21
Point.............................................................................. 4-21
Radius........................................................................... 4-21
Curvature ...................................................................... 4-22
Sections ........................................................................ 4-23
Dihedral Angle .............................................................. 4-24
Offset ............................................................................ 4-24
Deviation ....................................................................... 4-24
Shaded Curvature......................................................... 4-25
Draft ............................................................... 4-26
Slope ............................................................. 4-26
Reflection ........................................................ 4-26
Shadow ............................................................. 4-26
Exercise 4a Material Removal with a Surface ................... 4-27
Exercise 4b Silhouette Trim................................................ 4-38



Chapter 5 Surfaces from Boundaries......................................... 5-1
5.1 Boundary Blends .......................................................... 5-3
5.2 Blended Boundary Surfaces ........................................ 5-4
Curves............................................................. 5-7
Constraints ...................................................... 5-8
Control Points.......................................................... 5-15
Influencing Curves ........................................................ 5-19
5.3 Conic Surfaces ............................................................ 5-20
5.4 N-Sided Surf ................................................................ 5-23
5.5 Ribbon Datum.............................................................. 5-24
Exercise 5a Boundary Surfaces I ....................................... 5-26
Exercise 5b Surface Design Extension.............................. 5-42
Exercise 5c Boundary Surfaces II ...................................... 5-52



Chapter 6 Curvature Continuous Surfaces................................ 6-1
6.1 Techniques for Creating Curvature Continuous
Surfaces ............................................................ 6-3
Exercise 6a G2 Surfaces and Curves................................... 6-7
Exercise 6b Designing with G2 Surfaces .......................... 6-25



Chapter 7 Advanced Swept Surfaces......................................... 7-1
7.1 Variable Section Sweeps.............................................. 7-3
Constant sweep .............................................................. 7-4
Variable sweep................................................................ 7-4
Normal To Trajectory ...................................................... 7-5
Normal To Projection .................................................... 7-10
Constant Normal Direction ............................................ 7-12
Tangent Trajectory attribute .......................................... 7-12
Normal To Surface Horizontal/ Vertical Control ............ 7-15
Trajectory parameter..................................................... 7-15
Evalgraphs .......................................................... 7-17
7.2 Swept Blends................................................... 7-19
Exercise 7a Variable Section Sweep.................................. 7-28
Exercise 7b Variable Section Sweep ................................. 7-37
Exercise 7c Swept Blend Surfaces .................................... 7-44



Chapter 8 Advanced Surface Options........................................ 8-1
8.1 Blend Section To Surfaces .......................................... 8-3
8.2 Blend Between Surfaces.............................................. 8-6
8.3 Blend Tangent to Surfaces .......................................... 8-7
Exercise 8a Blend Tangent to Surfaces ............................ 8-11



Chapter 9 Offset Surfaces........................................... 9-1
9.1 Creating Offset Surfaces.............................................. 9-3
Offset Methods................................................................ 9-4
Exclude ............................................................ 9-7
9.2 Using Surfaces to Shell a Model ................................. 9-9
Exercise 9a Offset Method Options ................................... 9-12
Exercise 9b Shelling a Model ............................................. 9-18



Chapter 10 Free Form Surfaces................................................ 10-1
10.1 Surface Free Forms .................................................... 10-3
Base Surface ................................................................ 10-3
Grid ................................................................ 10-4
Manipulate .................................................................... 10-5
10.2 Manipulating Free Forms ........................................... 10-6
Free Form Example ...................................................... 10-9
10.3 Solid Free Forms....................................................... 10-11
10.4 Warp........................................................... 10-13
Exercise 10a Creating & Manipulating Free Forms........ 10-21
Exercise 10b Creating Warp features (optional)............. 10-34



Chapter 11 Importing IGES ....................................................... 11-1
11.1 Importing to Part and Assembly Modes ................... 11-3
Create New Model ........................................................ 11-3
Data From File .............................................................. 11-6
Imported Entities ........................................................... 11-8
Datum Curves............................................................. 11-10
11.2 Configuration File Options Affecting IGES Import 11-11
11.3 Characteristics of an Import Feature ...................... 11-14
11.4 Manipulating an Import Feature .............................. 11-15
Properties....................................................... 11-15
Replace or Add ............................................ 11-17
Delete Entities ............................................. 11-17
Repair Geometry......................................................... 11-18
Modify Spline Surface .................................. 11-22
Repair Imported IGES Surfaces.................................. 11-23
11.5 Manipulating Model Accuracy ................................. 11-24
Relative Accuracy ............................................ 11-24
Absolute Accuracy ............................................ 11-25
Modify Part Accuracy .................................................. 11-26
Modify Relative Accuracy............................................ 11-26
Modify Absolute Accuracy........................................... 11-26

Exercise 11a Repairing Imported IGES Data................... 11-27
Exercise 11b Import Data Repair II.................................. 11-30