In this task the focus is on physical knowledge about the world. Given the provided goal task in the input, describe a process that would lead to the asked outcome. This process often involves physical motions with objects, such as moving them, arranging them in a certain way, mixing them, shaking them, etc. 

To prevent a shaving blade from rusting,
always dry it with a towel before storing it.

To cut pieces out of felt, you can
Use a rolling utility cutter

How do I prepare the cartons to be used for soap molds?

Cut the top off of the empty carton and wash thoroughly with warm water.  Place open end down on paper towels to dry.