Physics Knife — Precision Sub-Level Slicing Tool for Create: Aeronautics

This mod introduces a specialized Physics Knife for Create: Aeronautics, giving players direct control over physical structure boundaries:

Point-and-click region slicing — Right-click two corners to instantly isolate blocks into a new simulated sub-level, either from the main world or from within existing physical structures.
Multi-region batch operation — Select multiple rectangular areas and press Enter to execute them all at once, enabling complex irregular cutouts without breaking connections manually.
Smart boundary detection — Automatically identifies whether you're targeting main world blocks or blocks inside a sub-level, applying the correct splitting logic for each context.
Visual selection overlay — Real-time box rendering using Create's Outliner system shows current and confirmed selections with distinct colors, so you always see exactly what will be cut.
Built-in safety limits — Diagonal distance and volume checks prevent accidentally selecting vast areas or distant structures, protecting against crashes and lag.
Immersive integration — Craftable recipe, custom tool model, and seamless compatibility with Create's mechanical systems via Sable's heat-map splitting API.

Create Aeronautics: PhysicsKnife