Mike Helbing and Roxane LegensteinCatalog of exhibition at UIMA of Mike Helbing and Roxane Legenstein, two contemporary Chicago artists working with metals in innovative ways. Mike Helbings uses many found elements for his sculptures, so many of his pieces are additive and the first step in his sculptural process is collecting materials. After he finds a piece of metal of exactly the right shape and size, he balances or plays off one shape against another as he builds his structures.