1. Test Your Metal

The competition heats up fast as the artists create expressive, kinetic avatars that show off their skills. But two welders face immediate setbacks.

3. Lost in the Sauce

Time to get scrappy. The welders put their engineering abilities to the test with mobiles made of unconventional materials like utensils and razors.

4. The Sound of Music

The artists hope to strike a chord with one-of-a-kind music makers utilizing random instruments and metal. But can these offbeat twosomes get in sync?

5. A Shadow of a Doubt

The semifinalists emerge from the shadows after welding square tubing, rod and sheet metal into artwork that tells two tales with sculpture and light.

6. Migs, Tig and Automobiles

Gun it! The finalists put the pedal to the metal building badass postapocalyptic escape vehicles fit to outrun zombies. Do they have the needed speed?