3D Design For Teens. Learn to design 3D objects in Tinkercad with Norwalk Public Library. This 3D Design class is scheduled to take place on Thursdays from 5 pm - 6 pm. Prior registration is required to join this program. Email bhighland@norwalkpl.org to register. Ages 13-17, Ages 10-12 if accompanied by parent / guardian. This is an in person program.