Mattapoisett Librarian Elizabeth Sherry will conduct a "3D Printing Academy" from 2 to 4:30 p.m., on two Fridays, July 27, and Aug. 3, at Mattapoisett Public Library, 7 Barstow St.

Sherry will teach participants design and print techniques using the library's 3D printer. The classes are free and open to the public.

For more information, call the library at 508-758-4171 or go online to: www.MattapoisettLibrary.org.