A CAD model comprises multiple parts forming an assembly. Per part, one or more test directions are determined. Per part and per test direction of the part, a blocking subset of parts is determined. For a part and test direction, a candidate set of candidate parts may be filtered via a view box. Based on the test direction, a ray set of border points associated with the part may be determined. A blocking subset may be determined from the candidate set based on ray tracing in the test direction from the border points of the ray set. A disassembly direction and one or more disassembly parts are selected from said multiple parts and the corresponding test directions based on the determined blocking subsets. An exploded view comprising a relative displacement of the one or more disassembly parts in the disassembly direction is created and displayed via a visualization means.