The CVD Furnace is one of the more advanced machines in HPTanks. Its main purpose is to facilitate the production of Carbon Nanotubes and Diamond Film. CVD stands for "Chemical Vapor Deposition", that's the name of the technique the furnace uses to grow materials onto the Wafer. Some recipes will require Catalysts, the items for the catalysts can be put into one of the two slots on the right, each item will give you one catalyst "unit". Optional Catalysts will improve efficiency and energy consumption, when present. It needs lots of water each operation and will also use up a small amount of catalyst, due to imperfections in the process.