This summer the Signal Mountain Playhouse is mounting a production of Willy Wonka and the Chocolate Factory. Many community theater groups may have found just building the sets for this show to be more than they wanted to handle, but the Signal Mountain Playhouse has a group of set designers who relish a challenge. Last summer they built a flying car for Chitty Chitty Bang Bang. This year they’ve built Willy Wonka’s chocolate factory. Richard Winham talked to Zachary Huseman who plays Charlie Bucket in the show and the play’s director, Jennifer Arbogast Wilson, who told him the complex set was just one of the challenges the playhouse company had to overcome.