Unlike conventional die sets employing a post-and-bushing guidance [guide bushing], the Uni-Guide guides the punch to the die with the stripper acting as a guide post and the die nest acting as a guide bushing. "We looked at traditional fourpost dies and found that constraints were built into that design, which is not what we wanted to do," says Michael Schroth, HumDinger president, during a visit to his company by Metal-Forming. "The Uni-Guide has a ball-cage design, and in essence it is a round die with one post.