Sketch N' Cage is a deformation tool that utilizes Blender's Grease Pencil to create arbitrary cage objects for mesh and surface deformation. Unlike standard lattice tools, it allows users to draw custom cage shapes that bind directly with target objects, providing an alternative approach for rigging and precise shape manipulation. The tool automatically generates shape keys for animation and supports interactive, real-time editing of the cage form.

Users can refine their custom deformers using features like symmetric extrusion, stroke joining, and a simplify slider for resolution control. The add-on includes a spin function for circular cages, mirror symmetry along any axis, and integration with subdivision and remesh modifiers to create lattice-like geometry. The package also includes the SketchN Camera Controls add-on.