Sef Pinney, an L.A.-based furniture designer and business owner, characterizes his design style as modern with Danish and Asian influences. He says he prefers to work with any type of beautiful wood and veneers, as well as industrial materials such as aerospace plywood, aluminum, steel and titanium. Sef says his strength as a designer is his ability to envision and execute complicated, elegant pieces.

Carpenter Chip Wade and designer Sef Pinney are paired up to bring Sef's designs to fruition. 

The remaining three designers face their toughest challenge yet: Create a multi-functional furniture piece that wows the judging panel. 

Here, Sef cuts metal parts for his interpretation of the challenge, a multi-functional desk.