You can create a motion blur effect for a garbage mask without having the mask actually change position. This could be useful, for example, if you would like to simulate movement in a stationary image.

To apply axis motion blur:

1. Toggle to schematic view and add a new axis.
2. Parent the new axis to the garbage mask axis.

   The garbage mask and the new axis should now both be parented to the garbage mask axis.

   
   

3. Apply motion blur to the new axis.

   Motion blur is applied to the stationary garbage mask.