A polyBoolOp node is created when you perform a boolean operation using the legacy boolean algorithm.
You can use the following attributes to edit your boolean operation.
Tip: To use the legacy boolean algorithm, select Mesh > Booleans > Union/Difference/Intersection > 
, and then enable Use legacy Boolean algorithm.
, and then enable Use legacy Boolean algorithm. - Operation
- Lets you switch to a different type of operation after a boolean operation has been performed.
- union
- Combines the volume of the selected meshes.
- difference
- Subtracts the volume of the second selected mesh from the first.
- intersection
- Leaves only the shared volume of the selected meshes.
- Use Thresholds
- When enabled, the boolean operation automatically checks for and removes very small faces and edges using the specified Vertex Distance Threshold and Face Area Threshold values.
- Vertex Distance Threshold
- Checks for zero length (or very short) edges. Any vertices closer than the specified value will automatically be merged into one vertex. Note: A large Vertex Distance Threshold value may cause parts of the mesh to disappear or extract from the original geometry. To fix this problem, disable Use Thresholds or decrease the Vertex Distance Threshold value.
- Face Area Threshold
- Checks for zero area (or very small) faces. Any faces with an area smaller than the specified value will automatically be collapsed into one vertex. Note: A large Face Area Threshold value may cause parts of the mesh to disappear or extract from the original geometry. To fix this problem, disable Use Thresholds or decrease the Face Area Threshold value.
- Preserve Color
- When on, preserves color per vertex data on your meshes. See Assign colors to polygon vertices. Note: This option is only available when you are using the legacy boolean algorithm.