case_images: PMC4414386_01
case_images: PMC4414386_02
case_images: Pouring molten metal into a molding frame.
  (A) Setting of the molding frame by the assistant operator. (B) Pouring the molten metal into the molding frame by the primary operator.
case_images: 40557_2014_9038_Fig1_HTML.jpg
case_images: PMC4414386_02_40557_2014_9038_Fig1_HTML.jpg
case_images: Fig1
case_images: While the assistant operator prepared the preheated molten frame (Figure 1A), the primary operator would scoop the molten metal from the furnace and insert it into the molding frame (Figure 1B).