Can't Get Crafting To Work From An Item With Inventory (Mortar and Pestle)

Well, this seems to be beyond anything normal programming I can handle. It’s using some crazy mixed up multi-class/child hybrid from hell I can’t figure out.

So I am now humbly requesting someone please post a step-by-step walkthrough on how to do the following:

Create a New Structure to Craft Items In.

OR

Re-Use The current Structures (with a different mesh) and have them craft the new items, but not their old ones.