According to the Food and Drug Administration (FDA), additive manufacturing, also known as 3-D printing, is entering mainstream use in medical devices, both as an alternative device production method for traditional components and as a method to create patient-matched devices. FDA has begun to receive submissions using additive manufacturing for medical devices, and the agency sees “many more on the horizon.” As the use of additive manufacturing becomes more widespread, the FDA wants additional information on scientific and technical challenges associated with the use of such technology for medical devices, particularly with regard to process verification and validation to ensure patient safety. To that end, the FDA is hosting a public workshop on October 8 and 9, 2014 entitled “Additive Manufacturing of Medical Devices: An Interactive Discussion on the Technical Considerations of 3-D Printing.'' The meeting is intended to provide a forum for FDA, medical device manufactures, additive manufacturing companies, and academia to explore this issue in detail, including ways to provide a transparent evaluation process for future submissions. The workshop discussion may facilitate development of new draft guidances and/or standards for additive manufacturing of medical devices. Comments on the workshop topic will be accepted until November 10, 2014.