BlockSculpt is an add-on designed to assist in the block-out phase of sculpting in Blender. It allows users to generate intermediate shapes between geometric objects, creating a foundation for detailed sculpting, similar to ZBrush's ZSpheres. The tool includes a system for posing characters using simple primitives before detailed work begins.

The add-on supports various basic primitives like spheres and cubes as starting points. It features built-in mirror functionality to maintain symmetry across axes during modifications. BlockSculpt operates with custom shortcuts to integrate efficiently into the native Blender interface.