It takes 50 minutes to cook a full stack of 300 metal in a stone forge.
A 3x3x3 metal box costs 11.1 stacks of metal ore.
Vault = 3.33 stacks
Heavy turret = 5.4 stacks
Cryofridge + 17 pods (ASA) = 1 stack
Indy forge = 16.66 stacks
Motorboat = 8 stacks
Hope this helps!
