Jae-Hyo Lee doesn't see bent nails as a mistake -- he sees them as art.
I could do this. I could do art. When I hammer a nail, it usually bends. My mistake has been to think this is a mistake.
Lee takes bent nails a couple steps further than I probably would. He carves a big hunk o' wood, hammers in hundreds of nails, carefully bends them, then grinds them off to reveal their inner beauty.
Implications - This is not an easy process. It requires Jae-Hyo Lee to scorch the entire surface, so as to achieve a rich black patina, and then grind the nails. Then using the raw silver metal, this allows Lee to "draw a picture on wood using nails."
Regardless of how it's done, Jae-Hyo Lee is an inventive designer with a bright future in his field.