This add-on allows users to create modular assemblies by setting up custom objects with editable snapping points. It enables a workflow similar to block-building games, where pieces like pipes, weapons, or structural blocks can be quickly snapped together in the viewport. The system includes a list manager for organizing and sharing parts as asset packs, along with a Prefab Edit Mode that isolates objects for editing. It also features a "Make Solid" operation that automatically performs a boolean union and cleans up interior geometry, preparing the final assembled mesh for sculpting or external software.