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?

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?

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

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

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?

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?

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

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

Let's get cooking! Grillable form meets ingenious function when the contestants team up to torch and cut smokin' yet serviceable all-metal barbecues.

Let's get cooking! Grillable form meets ingenious function when the contestants team up to torch and cut smokin' yet serviceable all-metal barbecues.

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

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