'Project Runway' Sneak Peek: Designers Face Another Unconventional Challenge (Exclusive Videos)

It's unconventional-challenge time -- again!

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In this week's episode of Project Runway, the designers are tasked with creating garments out of duct tape. The assignment follows on the heels of a previous unconventional task a few weeks ago in which the teams were required to use a mix of materials found at a flower shop and hardware store to create their designs.

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While the unconventional challenges tend to be fan favorites, typically they aren't quite as welcome among the designers because of the difficulty in working with the required materials.

"There I am taping, taping a dress, a prom dress," designer Daniel Esquivel says in one of two clips from this week's episode that are exclusive to The Hollywood Reporter. "It's a tricky thing to work with. It's not easy, and I swear in my head I think it's looking good. Hmm. No, it's not. It looks like a baked potato, and that's not going to work."

Project Runway airs at 9 p.m. Thursdays on Lifetime.