Draco started working on the iron armor sets first.
Iron ingots needed to be melted and filtered before turning into a malleable form that could be shaped into whatever you were making it. However, Draco did not need to filter the iron ingots as he had refined them with a perfect trait.
They were at the highest point iron could reach, so there was really nothing more to do here. He directly melted them in the furnace until they became very supple, allowing him to use his Three Pound Origin to begin the hammering and shaping.
This stage was a breeze for Draco, as his Three Pound Origin was far too overpowered for crafting something as simple as iron armor sets.
It was akin to using a laser sword to cut spiderwebs. Just how much hatred did you have for those poor webs that you would go so far?