Inventory Management Excel Spreadsheet

I'm looking for an Excel expert to create a comprehensive spreadsheet for managing inventory in an aluminum foundry. The spreadsheet should track labor costs per part and by department, facilitating detailed cost analysis.

I want it to track what each person gets done in each department and put it into inventory so when we invoice for it, I know the total labor cost and if it's high, I can go in and see why. It would have to track the parts through each department before going into inventory