It took 15 students, 20 hours, 25 pounds of drywall screws, 7,000 rubber bands and the vision of Chicago-based artist Tony Lewis to create the unconventional drawings soon to be on display in the Bowdoin College Museum of Art. Over the course of four days, students worked quietly side by side, wearing masks over their mouths and noses, drilling screws into the museum walls, painting them and stretching graphite-coated rubber bands around them. The process, overseen by Lewis and Andrew W.