Trimming Examples

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The Trimming command is a powerful tool with a variety of options.  The following examples should give you a good idea of the many trimming options that are available.  There are several different example cases shown below with different starting configurations.  In this first example, we will illustrate some of the trimming options on a simple surface.  The starting model consists of a Power Plane with edited vertices (pushed and pulled), and a circular sketch curve to trim with.  For more information on the Pwr_Plane command, see the Pwr_Plane documentation.  Unless otherwise noted, the following examples use the default options.
  Trimming Options & Examples  
Trimming Option:  Remove Left of Curve Trimming Option:  Remove Right of Curve
Trimming Option:  Split Faces
Fill Type:  Linear
Trim Step Back Left: 
5
Surface Offset Left: 
20
Trimming Option:  Split Faces
Fill Type:  G1 Blend Fill
Trim Step Back Left: 
5
Surface Offset Left: 
20
Trimming Option:  Split Faces
Fill Type:  Linear
Trim Step Back Left: 
10
Surface Offset Left:  -
20
Trimming Option:  Split Faces
Fill Type:  G1 Blend Fill
Trim Step Back Left: 
10
Surface Offset Left:  -
20
Trimming Option:  Split Faces
Fill Type:  G1 Blend Fill
Trim Step Back (Right):
  5
Trim Step Back (Left): 5
Tangent Rotation Angle (Left):  90
Tangent Rotation Angle (Right):  -90
Trimming Option:  Split Faces
Fill Type:  G1 Blend Fill
Surface Offset (Left):
  -20
Trim Step Back (Left): 15
Tangent Rotation Angle (Left):  45
Tangent Rotation Angle (Right):  -45
Trimming Option:  Split Faces
Fill Type:  G1 Blend Fill
Surface Offset (Left):
  -20
Trim Step Back (Left): 10
Use Two-Sided Blend = on
Middle Bulge: 
10
Start Blend Size:  5
End Blend Size:  5
Trimming Option:  Split Faces
Fill Type:  G1 Blend Fill
Surface Offset (Left):
  -20
Trim Step Back (Left): 15
Use Two-Sided Blend = on
Middle Bulge:  -
10
Start Blend Size:  5
End Blend Size:  10
Trimming Option:  Split Faces
Fill Type:  G1 Blend Fill
Surface Offset (Left):
  -20
Trim Step Back (Left): 15
Use Two-Sided Blend = on
Middle Bulge: 
0
Start Blend Size:  5
End Blend Size:  25
Trimming Option:  Split Faces
Fill Type:  G2 Blend Fill
Surface Offset (Left):
  20
Trim Step Back (Left): 15
Use Two-Sided Blend = on
Middle Bulge: 
0
Start Blend Size:  5
End Blend Size:  25
  Trimming Options & Examples - Rectangular trim curves  
You can trim with all types of curve shapes.  For example, the following examples illustrate some of the options you can use with trimming using a rectangular curve.  The first image illustrates the starting model. The starting model consists of a Power Plane with edited vertices (pushed and pulled), and a rectangular sketch curve (red) to trim with.  Unless otherwise noted, the following examples use the default options.
Original model with a Power Plane and a rectangular curve, which 
will be used for trimming.
Trimming Option:  Split Faces
Fill Type:  Linear Fill
Surface Offset (Left):  10
Trim Step Back (Left): 10
Trimming Option:  Split Faces
Fill Type:  G1 Blend
Surface Offset (Left):  10
Trim Step Back (Left): 10
Trimming Option:  Split Faces
Fill Type:  G2 Blend
Surface Offset (Left):  -15
Trim Step Back (Left): 10
Trimming Option:  Split Faces
Fill Type:  G1 Blend
Surface Offset (Left):  -20
Trim Step Back (Left): 10
Use Two-Sided Blend = on
Middle Bulge: 
10
Trimming Option:  Split Faces
Fill Type:  G1 Blend

Surface Offset (Left):  -20
Trim Step Back (Left): 15
Use Two-Sided Blend = on
Middle Bulge:  -
10
  Trimming Options & Examples - Offset Curve  
The following examples illustrate some of the options you can use with trimming using an offset curve (the offset is applied to the trimming
curve).  The first image illustrates the starting model. The model was created using a blend and then an offset trimming curve.  The subsequent images illustrate the effects of applying various parameters.
Original model with offset curve (and Pwr_Blend
to trim)
Trimming Option:  Remove Left of Curve
Trimming Option:  Split Faces
Fill Type:  Linear
Surface Offset (Left):
  10
Trim Step Back (Left):  3
Trimming Option:  Split Faces
Fill Type:  G2 Blend Fill
Surface Offset (Left):
  10
Trim Step Back (Left):  3
Trimming Option:  Split Faces
Fill Type:  G2 Blend Fill
Surface Offset (Left):
  -10
Trim Step Back (Left):  5
Trimming Option:  Split Faces
Fill Type:  G2 Blend Fill
Surface Offset (Left):
  -20
Trim Step Back (Left):  7
Use Two-Sided Blend = on
Middle Bulge: 
-10
  Trimming Options & Examples - Open Loop Curves  
The following examples illustrate some of the options you can use with trimming using an open loop curve.  The first image illustrates the starting model. The model was created using a blend and then using an open loop curve (red) to trim the blend.  The subsequent images illustrate the effects of applying various parameters.
Original model (before trimming) Trimming Option:  Remove Left of Curve
Trimming Option:  Remove Right of Curve Trimming Option:  Split Faces
Fill Type:  G1 Blend Fill
Surface Offset (Left):
  20
Trim Step Back (Left):  8
Trimming Option:  Split Faces
Fill Type:  G1 Blend Fill
Surface Offset (Left):
  40
Trim Step Back (Left):  15
Use Two-Sided Blend = on
Middle Bulge: 
10
Trimming Option:  Split Faces
Fill Type:  G1 Blend Fill
Surface Offset (Left):
  40
Trim Step Back (Left):  15
Use Two-Sided Blend = on
Middle Bulge:  -
10
Trimming Option:  Split Faces
Fill Type:  G3 Blend Fill
Surface Offset (Left):
  40
Trim Step Back (Left):  30
Use Two-Sided Blend = on
Middle Bulge: 
10
Trimming Option:  Split Faces
Fill Type:  G3 Blend Fill
Surface Offset (Left):
  40
Trim Step Back (Left):  30
Tangent Strength Left:  0.5
Tangent Strength Right: 
0.5
Trimming Option:  Split Faces
Fill Type:  G3 Blend Fill
Surface Offset (Left):
  -20
Trim Step Back (Left):  40
Tangent Strength Left:  0.5
Tangent Strength Right: 
0.5
Trimming Option:  Split Faces
Fill Type:  Linear
Surface Offset (Left):
  -20
Trim Step Back (Left):  30