LFO design shows how to create a custom clip geo shader using Redshift.

Both Arnold and V-Ray let you clip your objects are rendered time. Perfect for creating cutaways and animating objects appearing and disappearing. 

This new tutorial from LFO design shows a few ways you can make something similar with Redshift.

The tutorial is a free excerpt from LFO Design from their Redshift 3D Course aimed at intermediate users.