1. A method for generating an interactive 2D projection of a 3D model, wherein the method is performed by one or more processing devices, the method comprising: applying hierarchical defect data to the 3D model of a multi-part object, the hierarchical defect data includes a defect count applied to a child/parent pair of parts; generating heatmap data based at least in part on the hierarchical defect data; overlaying the heatmap data on the 3D model; extracting data corresponding to the 3D model and including the heatmap data after the overlaying step; and creating the interactive 2D projection based on the extracted data that includes the hierarchical defect data for the child/parent pair of parts.