Smithing & Enchanting potions are few and far between in Skyrim, and it bothered me that they have a very short duration (30 & 60 seconds respectively), which is fine until you want to rename the item you just enchanted, or have forgotten to pick up enough ingots to forge your weapons or armor.
I found myself countless times scrambling to smith or enchant everything I want in time, before the potion wore off, and reload again and again the last save to achieve what I wanted with my items.
Hence this mod. It will give you enough time to perform your smithing & enchanting chores.