Surfaces > can be used to cut out or cut off a part of a surface. The cutting edges are closed curves on the surface or curves moving van one edge of the surface to another or the same edge of the surface. The surface within the curves can be deleted or kept and the surface outside the curves deleted.
To remove parts of your geometry that are intersecting:
Select the two surfaces that are intersecting, and need removing.
Go to Surfaces > Intersect, this will create a curve on the surface of both the objects, this curve can later be used for trimming (removing parts of the geometry).
Now the NURBS geometry is ready for trimming. To trim: Select the object to be trimmed, go to Surfaces -> Trim Tool And click on the parts of the geometry that you want to keep (a dot will appear on the parts that are preserved). When ready, press ENTER.
Repeat this process to make a hole in the other part of the geometry.
More information and problem solving on the trim tool
Trim is a delicate operation that is prone to several errors.
When trimming very small objects, problems may arise with the internal tolerance.
Solution: Optimize the scale of your scene. Avoid trimming objects that are smaller than 1 unit.
- No closed region
When a Curve on Surface doesn't create a closed region on your surface, the trim tool will not work.
Solution: Make sure the Curve on Surface (one ore more) create a closed region. So the curve must be closed, eg when creating holes, or it must go from edge to edge.
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