Precomp

| Use Case | Benefit | |----------|---------| | | Simplifies parent timeline | | Reusing elements | Use same precomp in multiple main comps | | Applying effects | Effect affects all layers inside at once | | Pre-rendering | Speeds up RAM preview / final render | | Time remapping | Control speed of grouped layers together |

It acts as a pre-processor to compute the structural properties—specifically stiffness and inertial properties—of a composite blade , such as those used in wind turbines. precomp