Have you ever wondered what it looks like inside an injection-mold business? Are you intrigued by high-tech, state-of-the-art machinery and robotics? Maybe you just want to meet the owners of a successful business and see what they have in store for the next 50 years. Mold Craft is opening its doors for a celebration, which will include food, beverages, live music and a tour of their facilities. Free. 4–10 p.m. Mold Craft, 200 Stillwater Road, Willernie; 651.426.3216; mold-craft.com