This tells you how many parts + exp tokens you need to raise a WM to a certain level. It does not subract your current chest/emblem amounts from the individual part amounts, only from the total number of each chest type needed.

Current Level Target Level Current Screws Current Cogs Current Metal Current Exp Tokens
Current Chest Amounts(emblems assumes you buy golden chests)
Wooden Chests Iron Chests Golden Chests Diamond Chests Opal Chests Emerald Chests Platinum Chests Emblems