Controlling molten metal was different from controlling a flame, as it was not a pure fire elemental construct, not to mention it had tangible weight. But more than three hundred years of magical experience were not for show. Even just his visualisation and intent had been sharpened to the utmost limit. With his level of occlumency, Jon's mind was also capable of iron-clad control over his magic which wouldn't slip unless he was in great emotional turmoil. The rituals had also enhanced and unearthed his potential for control and magical power and had deepened his connection to the fire element. Fifteen days spent almost single-mindedly on the task brought his control of the molten liquid to a satisfactory level.