Join 3D Printing expert John Walsh for an introduction to 3D design and 3D Printing. Get an overview of the technology, it’s capabilities and potential.  This class is intended for adults. No prior experience with 3D design or 3D printing required (though some computer experience will come in handy): just bring yourself and all your creativity.  Register at woburnpubliclibrary.org or by calling 781.933.0148.