A jewelry retailer since 1985, Mark Ginsberg wanted to find a way to keep his Iowa City store buzzing at all times—no matter the ­economic climate. His investments in wax-cutting machines and CAD software for an in-house custom ­jewelry workshop were successful, but Ginsberg assumed there was money to be made in molding and casting for other industries. Then, 10 years ago, the first of many collaborative innovations came to life when his bench partnered with a medical research facility to engineer modifications on a hip joint model. M.C. Ginsberg’s business—jewelry and otherwise—has been booming ever since.What was the initial reason for investing in state-of-the-art wax-cutting machines? I could never stand sitting around waiting for the next customer to walk through the door. We realized we could use these new technologies we were investing in—from CAD software to mold maki