Boolean Trim

Cut and 'Trim' a mesh using a single-sided cutter object.

• Trim plane(s) can turn corners
• Multiple trim planes can be used with one modifier

Requirements

• Trim plane(s) must be single sided.
• Trim plane(s) must extend through the entire mesh.

Options

Trim Planes

• Objects/Collection: Choose individual mesh objects or a collection containing mesh objects.
• Object Count: How many mesh objects to insert (when in Objects mode).

Trim

• Reverse Trim Direction. Trim faces on the opposite side of the trim plane(s).
• Solver. The Boolean solver to use for the trim operation.
• Un-Sliced Islands. What to do with mesh islands that aren't sliced by the Boolean operation:
  • Trim Per Island. Delete un-sliced mesh islands based on the direction of the nearest cutting plane(s).
  • Keep All. Keep all un-sliced mesh islands.
  • Remove All. Remove all un-sliced mesh islands.
• Offset. Offset the trim plane(s) with even offset.
• Result.
  • Solid. Output solid mesh if possible. Trimmed section is filled.
  • Surface. Output single-sided mesh. Trimmed section is removed.

Advanced

• Plane Extrusion. How much the trim plane is extruded before the Boolean operation.

How it Works

1. Trim planes are extruded into solid shapes by a tiny amount in the opposite direction to the trim operation.
2. These shapes are used for a difference Boolean on the main mesh.
3. Mesh islands on the trimmed side are deleted.