Why this matters
Use Union, Subtract, Intersection and Weld for real geometry construction rather than stacking overlapping shapes and hoping Fill interprets them correctly.
How it works
- Boolean operations calculate new geometry from overlaps between suitable closed vectors.
- Union combines areas; Subtract removes one shape's area from another; Intersection keeps overlapping area.
- Weld is useful for merging touching/overlapping shapes in common design workflows.
Practical workflow
- Duplicate the source shapes first if you may need to revert.
- Confirm the shapes are closed and positioned correctly.
- Choose the Boolean operation that matches the intended physical area.
- Inspect the resulting nodes and remove accidental fragments.
- Preview Fill and Line behavior after the operation.
What to watch for
- Boolean operations are destructive geometry edits; keep a rollback copy.
- Open vectors are not appropriate inputs for many area-based Boolean operations.
- Selection order matters for operations such as subtraction.
