How long do i need to wait or should wait before sculpting something out of RKT? Assuming its just been made.

I shape my rough design while the RTK is still warm compressing it as much as possible for strength. You can blenderize the cereal before you make the treats for a smoother product also. After getting the approximate shape, I wait until its cool to start carving. Using an armature of dowels or wire will help it hold up, but you have to warn the consumer that its in there. I hope this helps a little.