Methods, systems, and apparatus, including computer program products feature providing a rendering of a three-dimensional assembly of components. An explosion sequence for separating first components of the assembly is determined. The explosion sequence comprises stages in which each stage represents a different spatial relationship between two or more of the first components. A first input is received from an interactive control. A first stage in the explosion sequence is selected based on the first input. The rendering of the assembly is updated, responsive to the first input, to show the first stage of the explosion sequence. A second input is received from the interactive control. A different second stage in the explosion sequence is selected based on the second input. The rendering of the assembly is updated, responsive to the second input, to show the second stage of the explosion sequence.