Here is a goal: how to prep a new smoker

Which way makes more sense to accomplish this goal?

[-] build the biggest fire you can and let it rage for 45 minutes to an hour. Doing so "seal[s] up the pores of the metal and incinerate[s] any remains and by-productsoil, grease, metal shavings, and any other gunkof the manufacturing process.
[-] build the biggest fire you can and let it rage for 45 days and nights to an hour. Doing so "seal[s] up the pores of the metal and incinerate[s] any remains and by-productsoil, grease, metal shavings, and any other gunkof the manufacturing process.
build the biggest fire you can and let it rage for 45 minutes to an hour. Doing so "seal[s] up the pores of the metal and incinerate[s] any remains and by-productsoil, grease, metal shavings, and any other gunkof the manufacturing process