After Julian explained a few more things about Hal to Valyr, specifically the man's weaknesses, the former eventually left the latter on his own once he had made sure that Valyr had committed his words to memory, allowing the young man to focus all of his attention on forging once more.
Due to his increased forging speed thanks to [Forger of Epics] and [Forger of Artifacts], Valyr zoomed through most of the forging process while making the weapons he was planning to sell.
However, this increased forging speed quickly canceled itself once he had activated [Hunter's Tracking Eyes] and [True Prodigious Blacksmith's Sight], taking his time to iron out as much of the dissonant parts of the weapons as possible.