Which Armament Master didn't anxiously and cautiously watch their flames while oh so carefully put the materials into the furnace, one by one? Only when the first item's impurities were eliminated, did they dare to add the second item. Just this process of eliminating impurities would take several hours.
This was even more stressful in the forming of the weapon's actual shape. Each and every palm strike could incur a different reaction. If you were to make even the slightest error, all your previous effort would have gone to naught while also wasting all those materials.
A more serious consequence would be an explosion.
This was especially concerning for fires of such intensities and sizes like the one she was using. If this fire were to explode, then it could raze the surrounding area to the ground.
