Show solid cuts with a 3D Cutaway

Issue Description

When creating a 3D section with a Cutaway Plane, you want to show the 3D section of the model with solid cut fills instead of the structural composition.

Solution

1. Go to View > Elements in 3D View > Filter and Cut Elements in 3D...
2. Under Cut Surface Display select the option Custom
3. Choose a Surface to override the appearance of the solid cut
4. Click OK

The 3D model now shows solid fills using the chosen surface