"Brutus, I think you have already mastered the basics," Thirteen commented as he observed the Troll's meticulous work. "Now, I will teach you how to create an arrowhead mold. But after you perfect it, you will make more of them on your own, okay?"
Brutus nodded and watched as Thirteen carved an arrowhead from a piece of wood.
After that, the seven-year-old placed it in a molding flask and filled it up with casting sand. Brutus continued to watch as Thirteen compressed the sand on top of the arrowhead.
When the boy was done, he flipped it over and removed the sand that was covering the arrowhead.
He took another casting flask and placed it on top of the first one. Just like he did earlier, he filled it up with casting sand.
When he was done, he flipped it over to remove the wooden carving, which had served its purpose.
